diff --git a/hyracks-fullstack/hyracks/hyracks-api/pom.xml b/hyracks-fullstack/hyracks/hyracks-api/pom.xml
index ddba2d8..f5565fb 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-api/pom.xml
@@ -102,5 +102,9 @@
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-collections4</artifactId>
     </dependency>
+    <dependency>
+      <groupId>commons-io</groupId>
+      <artifactId>commons-io</artifactId>
+    </dependency>
   </dependencies>
 </project>
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/exceptions/ErrorCode.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/exceptions/ErrorCode.java
index 8f36fcd..8a91547 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/exceptions/ErrorCode.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/exceptions/ErrorCode.java
@@ -63,7 +63,7 @@
     public static final int FILE_IS_NOT_DIRECTORY = 27;
     public static final int CANNOT_READ_FILE = 28;
     public static final int UNIDENTIFIED_IO_ERROR_READING_FILE = 29;
-    public static final int FILE_DOES_NOT_EXISTS = 30;
+    public static final int FILE_DOES_NOT_EXIST = 30;
     public static final int UNIDENTIFIED_IO_ERROR_DELETING_DIR = 31;
     public static final int RESULT_NO_RECORD = 32;
     public static final int DUPLICATE_KEY = 33;
@@ -100,6 +100,22 @@
     public static final int FLUSH_ON_CLOSED_WRITER = 64;
     public static final int FAIL_ON_FAILED_WRITER = 65;
     public static final int MISSED_FAIL_CALL = 66;
+    public static final int CANNOT_CREATE_FILE = 67;
+    public static final int NO_MAPPING_FOR_FILE_ID = 68;
+    public static final int NO_MAPPING_FOR_FILENAME = 69;
+    public static final int CANNOT_GET_NUMBER_OF_ELEMENT_FROM_INACTIVE_FILTER = 70;
+    public static final int CANNOT_CREATE_BLOOM_FILTER_BUILDER_FOR_INACTIVE_FILTER = 71;
+    public static final int CANNOT_CREATE_BLOOM_FILTER_WITH_NUMBER_OF_PAGES = 72;
+    public static final int CANNOT_ADD_TUPLES_TO_DUMMY_BLOOM_FILTER = 73;
+    public static final int CANNOT_CREATE_ACTIVE_BLOOM_FILTER = 74;
+    public static final int CANNOT_DEACTIVATE_INACTIVE_BLOOM_FILTER = 75;
+    public static final int CANNOT_DESTROY_ACTIVE_BLOOM_FILTER = 76;
+    public static final int CANNOT_PURGE_ACTIVE_INDEX = 77;
+    public static final int CANNOT_PURGE_ACTIVE_BLOOM_FILTER = 78;
+    public static final int CANNOT_BULK_LOAD_NON_EMPTY_TREE = 79;
+    public static final int CANNOT_CREATE_EXISTING_INDEX = 80;
+    public static final int FILE_ALREADY_MAPPED = 81;
+    public static final int FILE_ALREADY_EXISTS = 82;
 
     // Compilation error codes.
     public static final int RULECOLLECTION_NOT_INSTANCE_OF_LIST = 10000;
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/FileReference.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/FileReference.java
index 12a138a..b48ba14 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/FileReference.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/FileReference.java
@@ -56,12 +56,12 @@
         if (!(o instanceof FileReference)) {
             return false;
         }
-        return file.equals(((FileReference) o).file);
+        return path.equals(((FileReference) o).path) && dev.equals(((FileReference) o).dev);
     }
 
     @Override
     public int hashCode() {
-        return file.hashCode();
+        return path.hashCode();
     }
 
     /**
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IFileHandle.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IFileHandle.java
index a24c667..768ab87 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IFileHandle.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IFileHandle.java
@@ -18,9 +18,8 @@
  */
 package org.apache.hyracks.api.io;
 
-/**
- * IFileHandle is an interface that exists only for Java compilers to perform static typing
- * when handling file handle objects. Users must not implement this interface.
- */
+@FunctionalInterface
 public interface IFileHandle {
+
+    FileReference getFileReference();
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IIOManager.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IIOManager.java
index 50ef4f0..b0cc07a 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IIOManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IIOManager.java
@@ -59,7 +59,7 @@
 
     public long getSize(IFileHandle fileHandle);
 
-    public void deleteWorkspaceFiles();
+    public void deleteWorkspaceFiles() throws HyracksDataException;
 
     /**
      * @param ioDeviceId
@@ -79,6 +79,7 @@
 
     /**
      * Gets a file reference from an absolute path
+     *
      * @deprecated
      *             use getFileRef(int ioDeviceId, String path) instead
      * @param path
@@ -90,6 +91,7 @@
 
     /**
      * Create a workspace file with the given prefix
+     *
      * @param prefix
      * @return A FileReference for the created workspace file
      * @throws HyracksDataException
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/IoUtil.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/IoUtil.java
new file mode 100644
index 0000000..f4c5114
--- /dev/null
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/IoUtil.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.hyracks.api.util;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+
+import org.apache.commons.io.FileUtils;
+import org.apache.hyracks.api.exceptions.ErrorCode;
+import org.apache.hyracks.api.exceptions.HyracksDataException;
+import org.apache.hyracks.api.io.FileReference;
+
+/**
+ * This util class takes care of creation and deletion of files and directories
+ * and throws the appropriate error in case of failure.
+ */
+public class IoUtil {
+
+    private IoUtil() {
+    }
+
+    /**
+     * Delete a file
+     *
+     * @param fileRef
+     *            the file to be deleted
+     * @throws HyracksDataException
+     *             if the file doesn't exist or if it couldn't be deleted
+     */
+    public static void delete(FileReference fileRef) throws HyracksDataException {
+        delete(fileRef.getFile());
+    }
+
+    /**
+     * Delete a file
+     *
+     * @param file
+     *            the file to be deleted
+     * @throws HyracksDataException
+     *             if the file doesn't exist or if it couldn't be deleted
+     */
+    public static void delete(File file) throws HyracksDataException {
+        try {
+            if (file.isDirectory()) {
+                FileUtils.deleteDirectory(file);
+            } else {
+                Files.delete(file.toPath());
+            }
+        } catch (IOException e) {
+            throw HyracksDataException.create(ErrorCode.CANNOT_DELETE_FILE, e, file.getAbsolutePath());
+        }
+    }
+
+    /**
+     * Create a file on disk
+     *
+     * @param fileRef
+     *            the file to create
+     * @throws HyracksDataException
+     *             if the file already exists or if it couldn't be created
+     */
+    public static void create(FileReference fileRef) throws HyracksDataException {
+        if (fileRef.getFile().exists()) {
+            throw HyracksDataException.create(ErrorCode.FILE_ALREADY_EXISTS, fileRef.getAbsolutePath());
+        }
+        fileRef.getFile().getParentFile().mkdirs();
+        try {
+            if (!fileRef.getFile().createNewFile()) {
+                throw HyracksDataException.create(ErrorCode.FILE_ALREADY_EXISTS, fileRef.getAbsolutePath());
+            }
+        } catch (IOException e) {
+            throw HyracksDataException.create(ErrorCode.CANNOT_CREATE_FILE, e, fileRef.getAbsolutePath());
+        }
+    }
+}
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/resources/errormsg/en.properties b/hyracks-fullstack/hyracks/hyracks-api/src/main/resources/errormsg/en.properties
index 4bf069c..9f983a7 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/resources/errormsg/en.properties
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/resources/errormsg/en.properties
@@ -46,7 +46,7 @@
 27 = File %1$s is not a directory
 28 = User doesn't have read permissions on the file %1$s
 29 = Unidentified IO error occurred while reading the file %1$s
-30 = File %1$s doesn't exists
+30 = File %1$s doesn't exist
 31 = Unidentified IO error occurred while deleting the dir %1$s
 32 = No record for partition %1$s of result set %2$s
 33 = Inserting duplicate keys into the primary storage
@@ -83,5 +83,21 @@
 64 = Data pipeline protocol violation: flush() is called on a closed writer
 65 = Data pipeline protocol violation: fail() is called twice on a writer
 66 = Data pipeline protocol violation: fail() is not called by the upstream when there is a failure in the downstream
+67 = Cannot create the file: %1$s
+68 = No mapping found for file id %1$s
+69 = No mapping found for filename %1$s
+70 = Cannot get the number of elements from inactive bloom filter
+71 = Failed to create the bloom filter builder since it is not active
+72 = Cannot create a bloom filter with number of pages = %1$s
+73 = Cannot add elements to this filter since it is supposed to be empty (number of elements hint passed to the filter during construction was 0)
+74 = Failed to create the bloom filter since it is active
+75 = Failed to deactivate the bloom filter since it is inactive
+76 = Failed to destroy the bloom filter since it is active
+77 = Failed to purge the index since it is active
+78 = Failed to purge the bloom filter since it is active
+79 = Cannot bulk-load a non-empty tree
+80 = Cannot create index because it already exists
+81 = File %1$s is already mapped
+82 = Failed to create the file %1$s because it already exists
 
 10000 = The given rule collection %1$s is not an instance of the List class.
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/FileHandle.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/FileHandle.java
index 594b2c3..f71dcdf 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/FileHandle.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/FileHandle.java
@@ -22,6 +22,8 @@
 import java.io.RandomAccessFile;
 import java.nio.channels.FileChannel;
 
+import org.apache.hyracks.api.exceptions.ErrorCode;
+import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
 import org.apache.hyracks.api.io.IFileHandle;
 import org.apache.hyracks.api.io.IIOManager;
@@ -37,15 +39,23 @@
         this.fileRef = fileRef;
     }
 
+    /**
+     * Open the file
+     *
+     * @param rwMode
+     * @param syncMode
+     * @throws IOException
+     */
     public void open(IIOManager.FileReadWriteMode rwMode, IIOManager.FileSyncMode syncMode) throws IOException {
         String mode;
+        if (!fileRef.getFile().exists()) {
+            throw HyracksDataException.create(ErrorCode.FILE_DOES_NOT_EXIST, fileRef.getAbsolutePath());
+        }
         switch (rwMode) {
             case READ_ONLY:
                 mode = "r";
                 break;
-
             case READ_WRITE:
-                fileRef.getFile().getAbsoluteFile().getParentFile().mkdirs();
                 switch (syncMode) {
                     case METADATA_ASYNC_DATA_ASYNC:
                         mode = "rw";
@@ -78,6 +88,7 @@
         raf = null;
     }
 
+    @Override
     public FileReference getFileReference() {
         return fileRef;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/IOManager.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/IOManager.java
index 722ff9e..92831f4 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/IOManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/IOManager.java
@@ -38,6 +38,7 @@
 import org.apache.hyracks.api.io.IIOFuture;
 import org.apache.hyracks.api.io.IIOManager;
 import org.apache.hyracks.api.io.IODeviceHandle;
+import org.apache.hyracks.api.util.IoUtil;
 
 public class IOManager implements IIOManager {
     /*
@@ -130,8 +131,7 @@
             while (remaining > 0) {
                 int len = ((FileHandle) fHandle).getFileChannel().write(data, offset);
                 if (len < 0) {
-                    throw new HyracksDataException(
-                            "Error writing to file: " + ((FileHandle) fHandle).getFileReference().toString());
+                    throw new HyracksDataException("Error writing to file: " + fHandle.getFileReference().toString());
                 }
                 remaining -= len;
                 offset += len;
@@ -164,8 +164,7 @@
                     len = fileChannel.write(dataArray);
                 }
                 if (len < 0) {
-                    throw new HyracksDataException(
-                            "Error writing to file: " + ((FileHandle) fHandle).getFileReference().toString());
+                    throw new HyracksDataException("Error writing to file: " + fHandle.getFileReference().toString());
                 }
                 remaining -= len;
                 offset += len;
@@ -333,17 +332,17 @@
 
     @Override
     public long getSize(IFileHandle fileHandle) {
-        return ((FileHandle) fileHandle).getFileReference().getFile().length();
+        return fileHandle.getFileReference().getFile().length();
     }
 
     @Override
-    public void deleteWorkspaceFiles() {
+    public void deleteWorkspaceFiles() throws HyracksDataException {
         for (IODeviceHandle ioDevice : workspaces) {
             File workspaceFolder = new File(ioDevice.getMount(), ioDevice.getWorkspace());
             if (workspaceFolder.exists() && workspaceFolder.isDirectory()) {
                 File[] workspaceFiles = workspaceFolder.listFiles(WORKSPACE_FILES_FILTER);
                 for (File workspaceFile : workspaceFiles) {
-                    workspaceFile.delete();
+                    IoUtil.delete(workspaceFile);
                 }
             }
         }
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/src/main/java/org/apache/hyracks/examples/btree/helper/BTreeHelperStorageManager.java b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/src/main/java/org/apache/hyracks/examples/btree/helper/BTreeHelperStorageManager.java
index 73ac7a8..3d33ca1 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/src/main/java/org/apache/hyracks/examples/btree/helper/BTreeHelperStorageManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/src/main/java/org/apache/hyracks/examples/btree/helper/BTreeHelperStorageManager.java
@@ -25,7 +25,6 @@
 import org.apache.hyracks.storage.common.IResourceLifecycleManager;
 import org.apache.hyracks.storage.common.IStorageManager;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.storage.common.file.ResourceIdFactory;
 
 public class BTreeHelperStorageManager implements IStorageManager {
@@ -42,11 +41,6 @@
     }
 
     @Override
-    public IFileMapProvider getFileMapProvider(INCServiceContext ctx) {
-        return RuntimeContext.get(ctx).getFileMapManager();
-    }
-
-    @Override
     public ILocalResourceRepository getLocalResourceRepository(INCServiceContext ctx) {
         return RuntimeContext.get(ctx).getLocalResourceRepository();
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/src/main/java/org/apache/hyracks/examples/btree/helper/RuntimeContext.java b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/src/main/java/org/apache/hyracks/examples/btree/helper/RuntimeContext.java
index a2175ee..32f8418 100644
--- a/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/src/main/java/org/apache/hyracks/examples/btree/helper/RuntimeContext.java
+++ b/hyracks-fullstack/hyracks/hyracks-examples/btree-example/btreehelper/src/main/java/org/apache/hyracks/examples/btree/helper/RuntimeContext.java
@@ -39,7 +39,7 @@
 import org.apache.hyracks.storage.common.file.ILocalResourceRepositoryFactory;
 import org.apache.hyracks.storage.common.file.ResourceIdFactory;
 import org.apache.hyracks.storage.common.file.ResourceIdFactoryProvider;
-import org.apache.hyracks.storage.common.file.TransientFileMapManager;
+import org.apache.hyracks.storage.common.file.FileMapManager;
 import org.apache.hyracks.storage.common.file.TransientLocalResourceRepositoryFactory;
 
 public class RuntimeContext {
@@ -56,7 +56,7 @@
     };
 
     public RuntimeContext(INCServiceContext appCtx) throws HyracksDataException {
-        fileMapManager = new TransientFileMapManager();
+        fileMapManager = new FileMapManager();
         ICacheMemoryAllocator allocator = new HeapBufferAllocator();
         IPageReplacementStrategy prs = new ClockPageReplacementStrategy(allocator, 32768, 50);
         bufferCache = new BufferCache(appCtx.getIoManager(), prs, new DelayPageCleanerPolicy(1000), fileMapManager, 100,
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-bloomfilter/src/main/java/org/apache/hyracks/storage/am/bloomfilter/impls/BloomFilter.java b/hyracks-fullstack/hyracks/hyracks-storage-am-bloomfilter/src/main/java/org/apache/hyracks/storage/am/bloomfilter/impls/BloomFilter.java
index 3b49d08..47a9734 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-bloomfilter/src/main/java/org/apache/hyracks/storage/am/bloomfilter/impls/BloomFilter.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-bloomfilter/src/main/java/org/apache/hyracks/storage/am/bloomfilter/impls/BloomFilter.java
@@ -21,6 +21,7 @@
 
 import java.nio.ByteBuffer;
 
+import org.apache.hyracks.api.exceptions.ErrorCode;
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
 import org.apache.hyracks.dataflow.common.data.accessors.ITupleReference;
@@ -29,7 +30,6 @@
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.buffercache.IFIFOPageQueue;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class BloomFilter {
 
@@ -40,7 +40,6 @@
     private static final int NUM_BITS_OFFSET = NUM_ELEMENTS_OFFSET + 8; // 12
 
     private final IBufferCache bufferCache;
-    private final IFileMapProvider fileMapProvider;
     private final FileReference file;
     private final int[] keyFields;
     private int fileId = -1;
@@ -51,13 +50,11 @@
     private long numElements;
     private long numBits;
     private final int numBitsPerPage;
-    private final static byte[] ZERO_BUFFER = new byte[131072]; // 128kb
-    private final static long SEED = 0L;
+    private static final byte[] ZERO_BUFFER = new byte[131072]; // 128kb
+    private static final long SEED = 0L;
 
-    public BloomFilter(IBufferCache bufferCache, IFileMapProvider fileMapProvider, FileReference file, int[] keyFields)
-            throws HyracksDataException {
+    public BloomFilter(IBufferCache bufferCache, FileReference file, int[] keyFields) throws HyracksDataException {
         this.bufferCache = bufferCache;
-        this.fileMapProvider = fileMapProvider;
         this.file = file;
         this.keyFields = keyFields;
         this.numBitsPerPage = bufferCache.getPageSize() * Byte.SIZE;
@@ -80,7 +77,7 @@
 
     public long getNumElements() throws HyracksDataException {
         if (!isActivated) {
-            throw new HyracksDataException("The bloom filter is not activated.");
+            throw HyracksDataException.create(ErrorCode.CANNOT_GET_NUMBER_OF_ELEMENT_FROM_INACTIVE_FILTER);
         }
         return numElements;
     }
@@ -94,8 +91,8 @@
             long hash = Math.abs((hashes[0] + i * hashes[1]) % numBits);
 
             // we increment the page id by one, since the metadata page id of the filter is 0.
-            ICachedPage page = bufferCache.pin(
-                    BufferedFileHandle.getDiskPageId(fileId, (int) (hash / numBitsPerPage) + 1), false);
+            ICachedPage page =
+                    bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, (int) (hash / numBitsPerPage) + 1), false);
             page.acquireReadLatch();
             try {
                 ByteBuffer buffer = page.getBuffer();
@@ -115,40 +112,22 @@
         return true;
     }
 
-    private void prepareFile() throws HyracksDataException {
-        boolean fileIsMapped = false;
-        synchronized (fileMapProvider) {
-            fileIsMapped = fileMapProvider.isMapped(file);
-            if (!fileIsMapped) {
-                bufferCache.createFile(file);
-            }
-            fileId = fileMapProvider.lookupFileId(file);
-            try {
-                // Also creates the file if it doesn't exist yet.
-                bufferCache.openFile(fileId);
-            } catch (HyracksDataException e) {
-                // Revert state of buffer cache since file failed to open.
-                if (!fileIsMapped) {
-                    bufferCache.deleteFile(fileId, false);
-                }
-                throw e;
-            }
-        }
-    }
-
     public synchronized void create() throws HyracksDataException {
         if (isActivated) {
-            throw new HyracksDataException("Failed to create the bloom filter since it is activated.");
+            throw HyracksDataException.create(ErrorCode.CANNOT_CREATE_ACTIVE_BLOOM_FILTER);
         }
-        prepareFile();
-        bufferCache.closeFile(fileId);
+        fileId = bufferCache.createFile(file);
     }
 
     public synchronized void activate() throws HyracksDataException {
         if (isActivated) {
             return;
         }
-        prepareFile();
+        if (fileId >= 0) {
+            bufferCache.openFile(fileId);
+        } else {
+            fileId = bufferCache.openFile(file);
+        }
         readBloomFilterMetaData();
         isActivated = true;
     }
@@ -176,23 +155,26 @@
 
     public synchronized void deactivate() throws HyracksDataException {
         if (!isActivated) {
-            return;
+            throw HyracksDataException.create(ErrorCode.CANNOT_DEACTIVATE_INACTIVE_BLOOM_FILTER);
         }
         bufferCache.closeFile(fileId);
         isActivated = false;
     }
 
+    public void purge() throws HyracksDataException {
+        if (isActivated) {
+            throw HyracksDataException.create(ErrorCode.CANNOT_PURGE_ACTIVE_BLOOM_FILTER);
+        }
+        bufferCache.purgeHandle(fileId);
+        // after purging, the fileId has no mapping and no meaning
+        fileId = -1;
+    }
+
     public synchronized void destroy() throws HyracksDataException {
         if (isActivated) {
-            throw new HyracksDataException("Failed to destroy the bloom filter since it is activated.");
+            throw HyracksDataException.create(ErrorCode.CANNOT_DESTROY_ACTIVE_BLOOM_FILTER);
         }
-
-        file.delete();
-        if (fileId == -1) {
-            return;
-        }
-        bufferCache.deleteFile(fileId, false);
-        fileId = -1;
+        bufferCache.deleteFile(file);
     }
 
     public IIndexBulkLoader createBuilder(long numElements, int numHashes, int numBitsPerElement)
@@ -212,7 +194,7 @@
 
         public BloomFilterBuilder(long numElements, int numHashes, int numBitsPerElement) throws HyracksDataException {
             if (!isActivated) {
-                throw new HyracksDataException("Failed to create the bloom filter builder since it is not activated.");
+                throw HyracksDataException.create(ErrorCode.CANNOT_CREATE_BLOOM_FILTER_BUILDER_FOR_INACTIVE_FILTER);
             }
             queue = bufferCache.createFIFOQueue();
             this.numElements = numElements;
@@ -220,7 +202,7 @@
             numBits = this.numElements * numBitsPerElement;
             long tmp = (long) Math.ceil(numBits / (double) numBitsPerPage);
             if (tmp > Integer.MAX_VALUE) {
-                throw new HyracksDataException("Cannot create a bloom filter with his huge number of pages.");
+                throw HyracksDataException.create(ErrorCode.CANNOT_CREATE_BLOOM_FILTER_WITH_NUMBER_OF_PAGES, tmp);
             }
             numPages = (int) tmp;
             pages = new ICachedPage[numPages];
@@ -259,13 +241,12 @@
         @Override
         public void add(ITupleReference tuple) throws HyracksDataException {
             if (numPages == 0) {
-                throw new HyracksDataException(
-                        "Cannot add elements to this filter since it is supposed to be empty (number of elements hint passed to the filter during construction was 0).");
+                throw HyracksDataException.create(ErrorCode.CANNOT_ADD_TUPLES_TO_DUMMY_BLOOM_FILTER);
             }
             MurmurHash128Bit.hash3_x64_128(tuple, keyFields, SEED, hashes);
             for (int i = 0; i < numHashes; ++i) {
                 long hash = Math.abs((hashes[0] + i * hashes[1]) % numBits);
-                ICachedPage page = pages[((int) (hash / numBitsPerPage))];
+                ICachedPage page = pages[(int) (hash / numBitsPerPage)];
                 ByteBuffer buffer = page.getBuffer();
                 int byteIndex = (int) (hash % numBitsPerPage) >> 3; // divide by 8
                 byte b = buffer.get(byteIndex);
@@ -297,8 +278,8 @@
                     bufferCache.returnPage(p, false);
                 }
             }
-            if (metaDataPage != null ){
-                bufferCache.returnPage(metaDataPage,false);
+            if (metaDataPage != null) {
+                bufferCache.returnPage(metaDataPage, false);
             }
         }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-bloomfilter/src/main/java/org/apache/hyracks/storage/am/bloomfilter/impls/BloomFilterFactory.java b/hyracks-fullstack/hyracks/hyracks-storage-am-bloomfilter/src/main/java/org/apache/hyracks/storage/am/bloomfilter/impls/BloomFilterFactory.java
index c3a1718..8d01bb7 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-bloomfilter/src/main/java/org/apache/hyracks/storage/am/bloomfilter/impls/BloomFilterFactory.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-bloomfilter/src/main/java/org/apache/hyracks/storage/am/bloomfilter/impls/BloomFilterFactory.java
@@ -22,21 +22,18 @@
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class BloomFilterFactory {
     private final IBufferCache bufferCache;
-    private final IFileMapProvider fileMapProvider;
     private final int[] bloomFilterKeyFields;
 
-    public BloomFilterFactory(IBufferCache bufferCache, IFileMapProvider fileMapProvider, int[] bloomFilterKeyFields) {
+    public BloomFilterFactory(IBufferCache bufferCache, int[] bloomFilterKeyFields) {
         this.bufferCache = bufferCache;
-        this.fileMapProvider = fileMapProvider;
         this.bloomFilterKeyFields = bloomFilterKeyFields;
     }
 
     public BloomFilter createBloomFiltertInstance(FileReference file) throws HyracksDataException {
-        return new BloomFilter(bufferCache, fileMapProvider, file, bloomFilterKeyFields);
+        return new BloomFilter(bufferCache, file, bloomFilterKeyFields);
     }
 
     public int[] getBloomFilterKeyFields() {
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/dataflow/BTreeResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/dataflow/BTreeResource.java
index 90bc126..24d2a37 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/dataflow/BTreeResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/dataflow/BTreeResource.java
@@ -55,9 +55,8 @@
         IBufferCache bufferCache = storageManager.getBufferCache(ctx);
         IIOManager ioManager = ctx.getIoManager();
         FileReference resourceRef = ioManager.resolve(path);
-        return BTreeUtils.createBTree(bufferCache, storageManager.getFileMapProvider(ctx), typeTraits,
-                comparatorFactories, BTreeLeafFrameType.REGULAR_NSM, resourceRef,
-                pageManagerFactory.createPageManager(bufferCache));
+        return BTreeUtils.createBTree(bufferCache, typeTraits, comparatorFactories, BTreeLeafFrameType.REGULAR_NSM,
+                resourceRef, pageManagerFactory.createPageManager(bufferCache));
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/impls/BTree.java b/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/impls/BTree.java
index 7f57524..ce35fbf 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/impls/BTree.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/impls/BTree.java
@@ -63,7 +63,6 @@
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class BTree extends AbstractTreeIndex {
 
@@ -77,11 +76,10 @@
     private final ReadWriteLock treeLatch;
     private final int maxTupleSize;
 
-    public BTree(IBufferCache bufferCache, IFileMapProvider fileMapProvider, IPageManager freePageManager,
-            ITreeIndexFrameFactory interiorFrameFactory, ITreeIndexFrameFactory leafFrameFactory,
-            IBinaryComparatorFactory[] cmpFactories, int fieldCount, FileReference file) {
-        super(bufferCache, fileMapProvider, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
-                fieldCount, file);
+    public BTree(IBufferCache bufferCache, IPageManager freePageManager, ITreeIndexFrameFactory interiorFrameFactory,
+            ITreeIndexFrameFactory leafFrameFactory, IBinaryComparatorFactory[] cmpFactories, int fieldCount,
+            FileReference file) {
+        super(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories, fieldCount, file);
         this.treeLatch = new ReentrantReadWriteLock(true);
         this.smoCounter = new AtomicInteger();
         ITreeIndexFrame leafFrame = leafFrameFactory.createFrame();
@@ -96,11 +94,11 @@
         RangePredicate diskOrderScanPred = new RangePredicate(null, null, true, true, ctx.getCmp(), ctx.getCmp());
         int maxPageId = freePageManager.getMaxPageId(ctx.getMetaFrame());
         int currentPageId = bulkloadLeafStart;
-        ICachedPage page = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, currentPageId), false);
+        ICachedPage page = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), currentPageId), false);
         page.acquireReadLatch();
         try {
             cursor.setBufferCache(bufferCache);
-            cursor.setFileId(fileId);
+            cursor.setFileId(getFileId());
             cursor.setCurrentPageId(currentPageId);
             cursor.setMaxPageId(maxPageId);
             ctx.getCursorInitialState().setPage(page);
@@ -129,7 +127,7 @@
     }
 
     private void validate(BTreeOpContext ctx, int pageId) throws HyracksDataException {
-        ICachedPage page = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+        ICachedPage page = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
         ctx.getInteriorFrame().setPage(page);
         PageValidationInfo currentPvi = ctx.getValidationInfos().peekFirst();
 
@@ -206,14 +204,14 @@
             repeatOp = false;
         }
         cursor.setBufferCache(bufferCache);
-        cursor.setFileId(fileId);
+        cursor.setFileId(getFileId());
     }
 
     private void unsetSmPages(BTreeOpContext ctx) throws HyracksDataException {
         ICachedPage originalPage = ctx.getInteriorFrame().getPage();
         for (int i = 0; i < ctx.getSmPages().size(); i++) {
             int pageId = ctx.getSmPages().get(i);
-            ICachedPage smPage = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+            ICachedPage smPage = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
             smPage.acquireWriteLatch();
             try {
                 ctx.getInteriorFrame().setPage(smPage);
@@ -238,11 +236,11 @@
     private void createNewRoot(BTreeOpContext ctx) throws HyracksDataException {
         // Make sure the root is always in the same page.
         ICachedPage leftNode =
-                bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, ctx.getSplitKey().getLeftPage()), false);
+                bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), ctx.getSplitKey().getLeftPage()), false);
         leftNode.acquireWriteLatch();
         try {
             int newLeftId = freePageManager.takePage(ctx.getMetaFrame());
-            ICachedPage newLeftNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, newLeftId), true);
+            ICachedPage newLeftNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), newLeftId), true);
             newLeftNode.acquireWriteLatch();
             try {
                 boolean largePage = false;
@@ -350,7 +348,7 @@
             }
         }
         int rightPageId = freePageManager.takePage(ctx.getMetaFrame());
-        ICachedPage rightNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, rightPageId), true);
+        ICachedPage rightNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), rightPageId), true);
         rightNode.acquireWriteLatch();
         try {
             IBTreeLeafFrame rightFrame = ctx.createLeafFrame();
@@ -466,7 +464,8 @@
         switch (spaceStatus) {
             case INSUFFICIENT_SPACE: {
                 int rightPageId = freePageManager.takePage(ctx.getMetaFrame());
-                ICachedPage rightNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, rightPageId), true);
+                ICachedPage rightNode =
+                        bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), rightPageId), true);
                 rightNode.acquireWriteLatch();
                 try {
                     IBTreeFrame rightFrame = ctx.createInteriorFrame();
@@ -545,7 +544,7 @@
     }
 
     private ICachedPage isConsistent(int pageId, BTreeOpContext ctx) throws Exception {
-        ICachedPage node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+        ICachedPage node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
         node.acquireReadLatch();
         ctx.getInteriorFrame().setPage(node);
         boolean isConsistent = ctx.getPageLsns().getLast() == ctx.getInteriorFrame().getPageLsn();
@@ -559,7 +558,7 @@
 
     private void performOp(int pageId, ICachedPage parent, boolean parentIsReadLatched, BTreeOpContext ctx)
             throws HyracksDataException {
-        ICachedPage node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+        ICachedPage node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
         ctx.getInteriorFrame().setPage(node);
         // this check performs an unprotected read in the page
         // the following could happen: TODO fill out
@@ -620,8 +619,8 @@
                             case UPDATE: {
                                 // Is there a propagated split key?
                                 if (ctx.getSplitKey().getBuffer() != null) {
-                                    ICachedPage interiorNode =
-                                            bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+                                    ICachedPage interiorNode = bufferCache
+                                            .pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
                                     interiorNode.acquireWriteLatch();
                                     try {
                                         // Insert or update op. Both can cause split keys to propagate upwards.
@@ -769,7 +768,7 @@
     public void printTree(int pageId, ICachedPage parent, boolean unpin, IBTreeLeafFrame leafFrame,
             IBTreeInteriorFrame interiorFrame, byte treeHeight, ISerializerDeserializer[] keySerdes,
             StringBuilder strBuilder, MultiComparator cmp) throws Exception {
-        ICachedPage node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+        ICachedPage node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
         node.acquireReadLatch();
         try {
             if (parent != null && unpin == true) {
@@ -1037,7 +1036,7 @@
                         splitKey.setRightPage(leafFrontier.pageId);
                     }
                     if (tupleSize > maxTupleSize) {
-                        final long dpid = BufferedFileHandle.getDiskPageId(fileId, leafFrontier.pageId);
+                        final long dpid = BufferedFileHandle.getDiskPageId(getFileId(), leafFrontier.pageId);
                         // calculate required number of pages.
                         int headerSize = Math.max(leafFrame.getPageHeaderSize(), interiorFrame.getPageHeaderSize());
                         final int multiplier =
@@ -1052,7 +1051,7 @@
                         leafFrame.initBuffer((byte) 0);
                         ((IBTreeLeafFrame) leafFrame).setLargeFlag(true);
                     } else {
-                        final long dpid = BufferedFileHandle.getDiskPageId(fileId, leafFrontier.pageId);
+                        final long dpid = BufferedFileHandle.getDiskPageId(getFileId(), leafFrontier.pageId);
                         leafFrontier.page = bufferCache.confiscatePage(dpid);
                         leafFrame.setPage(leafFrontier.page);
                         leafFrame.initBuffer((byte) 0);
@@ -1116,7 +1115,7 @@
 
                 ((IBTreeInteriorFrame) interiorFrame).deleteGreatest();
                 int finalPageId = freePageManager.takePage(metaFrame);
-                bufferCache.setPageDiskId(frontier.page, BufferedFileHandle.getDiskPageId(fileId, finalPageId));
+                bufferCache.setPageDiskId(frontier.page, BufferedFileHandle.getDiskPageId(getFileId(), finalPageId));
                 pagesToWrite.add(frontier.page);
                 splitKey.setLeftPage(finalPageId);
 
@@ -1176,7 +1175,7 @@
         }
 
         private void setPageDpid(ICachedPage page, int pageId) {
-            bufferCache.setPageDiskId(page, BufferedFileHandle.getDiskPageId(fileId, pageId));
+            bufferCache.setPageDiskId(page, BufferedFileHandle.getDiskPageId(getFileId(), pageId));
         }
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/util/BTreeUtils.java b/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/util/BTreeUtils.java
index 5cc9599..303777e 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/util/BTreeUtils.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-btree/src/main/java/org/apache/hyracks/storage/am/btree/util/BTreeUtils.java
@@ -35,29 +35,26 @@
 import org.apache.hyracks.storage.am.common.tuples.TypeAwareTupleWriterFactory;
 import org.apache.hyracks.storage.common.MultiComparator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class BTreeUtils {
-    public static BTree createBTree(IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories, BTreeLeafFrameType leafType,
-            FileReference file, IPageManager freePageManager) throws HyracksDataException {
+    public static BTree createBTree(IBufferCache bufferCache, ITypeTraits[] typeTraits,
+            IBinaryComparatorFactory[] cmpFactories, BTreeLeafFrameType leafType, FileReference file,
+            IPageManager freePageManager) throws HyracksDataException {
         TypeAwareTupleWriterFactory tupleWriterFactory = new TypeAwareTupleWriterFactory(typeTraits);
         ITreeIndexFrameFactory leafFrameFactory = getLeafFrameFactory(tupleWriterFactory, leafType);
         ITreeIndexFrameFactory interiorFrameFactory = new BTreeNSMInteriorFrameFactory(tupleWriterFactory);
-        BTree btree = new BTree(bufferCache, fileMapProvider, freePageManager, interiorFrameFactory, leafFrameFactory,
-                cmpFactories, typeTraits.length, file);
-        return btree;
+        return new BTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                typeTraits.length, file);
     }
 
-    public static BTree createBTree(IBufferCache bufferCache, IPageManager freePageManager,
-            IFileMapProvider fileMapProvider, ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories,
-            BTreeLeafFrameType leafType, FileReference file) throws HyracksDataException {
+    public static BTree createBTree(IBufferCache bufferCache, IPageManager freePageManager, ITypeTraits[] typeTraits,
+            IBinaryComparatorFactory[] cmpFactories, BTreeLeafFrameType leafType, FileReference file)
+            throws HyracksDataException {
         TypeAwareTupleWriterFactory tupleWriterFactory = new TypeAwareTupleWriterFactory(typeTraits);
         ITreeIndexFrameFactory leafFrameFactory = getLeafFrameFactory(tupleWriterFactory, leafType);
         ITreeIndexFrameFactory interiorFrameFactory = new BTreeNSMInteriorFrameFactory(tupleWriterFactory);
-        BTree btree = new BTree(bufferCache, fileMapProvider, freePageManager, interiorFrameFactory, leafFrameFactory,
-                cmpFactories, typeTraits.length, file);
-        return btree;
+        return new BTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                typeTraits.length, file);
     }
 
     // Creates a new MultiComparator by constructing new IBinaryComparators.
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/build/IndexBuilder.java b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/build/IndexBuilder.java
index f1ae6b0..9f648c5 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/build/IndexBuilder.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/build/IndexBuilder.java
@@ -19,10 +19,13 @@
 package org.apache.hyracks.storage.am.common.build;
 
 import java.io.IOException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import org.apache.hyracks.api.application.INCServiceContext;
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
+import org.apache.hyracks.api.util.IoUtil;
 import org.apache.hyracks.storage.am.common.api.IIndexBuilder;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexFrame;
 import org.apache.hyracks.storage.common.IIndex;
@@ -35,6 +38,7 @@
 import org.apache.hyracks.storage.common.file.IResourceIdFactory;
 
 public class IndexBuilder implements IIndexBuilder {
+    private static final Logger LOGGER = Logger.getLogger(IndexBuilder.class.getName());
 
     protected final INCServiceContext ctx;
     protected final IStorageManager storageManager;
@@ -81,8 +85,22 @@
                 //The reason for this is to handle many cases such as:
                 //1. Crash while delete index is running (we don't do global cleanup on restart)
                 //2. Node leaves and then join with old data
+                LOGGER.log(Level.WARNING,
+                        "Removing existing index on index create for the index: " + resourceRef.getRelativePath());
                 lcManager.unregister(resourceRef.getRelativePath());
+                index.destroy();
             } else {
+                if (resourceRef.getFile().exists()) {
+                    // Index is not registered but the index file exists
+                    // This is another big problem that we need to disallow soon
+                    // We can only disallow this if we have a global cleanup after crash
+                    // on reboot
+                    LOGGER.log(Level.WARNING,
+                            "Deleting " + resourceRef.getRelativePath()
+                                    + " on index create. The index is not registered"
+                                    + " but the file exists in the filesystem");
+                    IoUtil.delete(resourceRef);
+                }
                 index = resource.createInstance(ctx);
             }
             index.create();
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorNodePushable.java b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorNodePushable.java
index c00cecb..cc3bfe7 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorNodePushable.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorNodePushable.java
@@ -37,7 +37,6 @@
 import org.apache.hyracks.storage.common.IStorageManager;
 import org.apache.hyracks.storage.common.LocalResource;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class TreeIndexStatsOperatorNodePushable extends AbstractUnaryOutputSourceOperatorNodePushable {
     private final IHyracksTaskContext ctx;
@@ -69,14 +68,11 @@
         try {
             writer.open();
             IBufferCache bufferCache = storageManager.getBufferCache(ctx.getJobletContext().getServiceContext());
-            IFileMapProvider fileMapProvider =
-                    storageManager.getFileMapProvider(ctx.getJobletContext().getServiceContext());
             LocalResource resource = treeIndexHelper.getResource();
             IIOManager ioManager = ctx.getIoManager();
             FileReference fileRef = ioManager.resolve(resource.getPath());
-            int indexFileId = fileMapProvider.lookupFileId(fileRef);
             TreeIndexStatsGatherer statsGatherer = new TreeIndexStatsGatherer(bufferCache, treeIndex.getPageManager(),
-                    indexFileId, treeIndex.getRootPageId());
+                    fileRef, treeIndex.getRootPageId());
             TreeIndexStats stats = statsGatherer.gatherStats(treeIndex.getLeafFrameFactory().createFrame(),
                     treeIndex.getInteriorFrameFactory().createFrame(),
                     treeIndex.getPageManager().createMetadataFrame());
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/impls/AbstractTreeIndex.java b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/impls/AbstractTreeIndex.java
index 163a3d1..8ffd0eb 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/impls/AbstractTreeIndex.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/impls/AbstractTreeIndex.java
@@ -40,7 +40,6 @@
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.buffercache.IFIFOPageQueue;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public abstract class AbstractTreeIndex implements ITreeIndex {
 
@@ -49,7 +48,6 @@
     protected int rootPage = 1;
 
     protected final IBufferCache bufferCache;
-    protected final IFileMapProvider fileMapProvider;
     protected final IPageManager freePageManager;
 
     protected final ITreeIndexFrameFactory interiorFrameFactory;
@@ -59,21 +57,16 @@
     protected final int fieldCount;
 
     protected FileReference file;
-    protected int fileId = -1;
+    private int fileId = -1;
 
     protected boolean isActive = false;
-    //hasEverBeenActivated is to stop the throwing of an exception of deactivating an index that
-    //was never activated or failed to activate in try/finally blocks, as there's no way to know if
-    //an index is activated or not from the outside.
-    protected boolean hasEverBeenActivated = false;
 
     protected int bulkloadLeafStart = 0;
 
-    public AbstractTreeIndex(IBufferCache bufferCache, IFileMapProvider fileMapProvider, IPageManager freePageManager,
+    public AbstractTreeIndex(IBufferCache bufferCache, IPageManager freePageManager,
             ITreeIndexFrameFactory interiorFrameFactory, ITreeIndexFrameFactory leafFrameFactory,
             IBinaryComparatorFactory[] cmpFactories, int fieldCount, FileReference file) {
         this.bufferCache = bufferCache;
-        this.fileMapProvider = fileMapProvider;
         this.freePageManager = freePageManager;
         this.interiorFrameFactory = interiorFrameFactory;
         this.leafFrameFactory = leafFrameFactory;
@@ -87,9 +80,8 @@
         if (isActive) {
             throw HyracksDataException.create(ErrorCode.CANNOT_CREATE_ACTIVE_INDEX);
         }
-        synchronized (fileMapProvider) {
-            fileId = createAndOpen(bufferCache, fileMapProvider, file);
-        }
+        fileId = bufferCache.createFile(file);
+        bufferCache.openFile(fileId);
         freePageManager.open(fileId);
         freePageManager.init(interiorFrameFactory, leafFrameFactory);
         setRootPage();
@@ -97,27 +89,6 @@
         bufferCache.closeFile(fileId);
     }
 
-    public static int createAndOpen(IBufferCache bufferCache, IFileMapProvider fileMapProvider, FileReference file)
-            throws HyracksDataException {
-        int fileId;
-        boolean fileIsMapped = fileMapProvider.isMapped(file);
-        if (!fileIsMapped) {
-            bufferCache.createFile(file);
-        }
-        fileId = fileMapProvider.lookupFileId(file);
-        try {
-            // Also creates the file if it doesn't exist yet.
-            bufferCache.openFile(fileId);
-        } catch (HyracksDataException e) {
-            // Revert state of buffer cache since file failed to open.
-            if (!fileIsMapped) {
-                bufferCache.deleteFile(fileId, false);
-            }
-            throw e;
-        }
-        return fileId;
-    }
-
     private void setRootPage() throws HyracksDataException {
         rootPage = freePageManager.getRootPageId();
         bulkloadLeafStart = freePageManager.getBulkLoadLeaf();
@@ -128,49 +99,35 @@
         if (isActive) {
             throw HyracksDataException.create(ErrorCode.CANNOT_ACTIVATE_ACTIVE_INDEX);
         }
-        boolean fileIsMapped = false;
-        synchronized (fileMapProvider) {
-            fileIsMapped = fileMapProvider.isMapped(file);
-            if (!fileIsMapped) {
-                bufferCache.createFile(file);
-            }
-            fileId = fileMapProvider.lookupFileId(file);
-            try {
-                // Also creates the file if it doesn't exist yet.
-                bufferCache.openFile(fileId);
-            } catch (HyracksDataException e) {
-                // Revert state of buffer cache since file failed to open.
-                if (!fileIsMapped) {
-                    bufferCache.deleteFile(fileId, false);
-                }
-                throw e;
-            }
+        if (fileId >= 0) {
+            bufferCache.openFile(fileId);
+        } else {
+            fileId = bufferCache.openFile(file);
         }
         freePageManager.open(fileId);
         setRootPage();
         // TODO: Should probably have some way to check that the tree is physically consistent
         // or that the file we just opened actually is a tree
         isActive = true;
-        hasEverBeenActivated = true;
     }
 
     @Override
     public synchronized void deactivate() throws HyracksDataException {
-        if (!isActive && hasEverBeenActivated) {
+        if (!isActive) {
             throw HyracksDataException.create(ErrorCode.CANNOT_DEACTIVATE_INACTIVE_INDEX);
         }
-        if (isActive) {
-            freePageManager.close();
-            bufferCache.closeFile(fileId);
-        }
-
+        freePageManager.close();
+        bufferCache.closeFile(fileId);
         isActive = false;
     }
 
-    public synchronized void deactivateCloseHandle() throws HyracksDataException {
-        deactivate();
+    public void purge() throws HyracksDataException {
+        if (isActive) {
+            throw HyracksDataException.create(ErrorCode.CANNOT_PURGE_ACTIVE_INDEX);
+        }
         bufferCache.purgeHandle(fileId);
-
+        // after purging, the fileId has no mapping and no meaning
+        fileId = -1;
     }
 
     @Override
@@ -178,13 +135,7 @@
         if (isActive) {
             throw HyracksDataException.create(ErrorCode.CANNOT_DESTROY_ACTIVE_INDEX);
         }
-
-        if (fileId == -1) {
-            return;
-        }
-        bufferCache.deleteFile(fileId, false);
-        file.delete();
-        fileId = -1;
+        bufferCache.deleteFile(file);
     }
 
     @Override
@@ -284,7 +235,7 @@
             queue = bufferCache.createFIFOQueue();
 
             if (!isEmptyTree(leafFrame)) {
-                throw new HyracksDataException("Cannot bulk-load a non-empty tree.");
+                throw HyracksDataException.create(ErrorCode.CANNOT_BULK_LOAD_NON_EMPTY_TREE);
             }
 
             this.cmp = MultiComparator.create(cmpFactories);
@@ -312,9 +263,6 @@
             pagesToWrite = new ArrayList<>();
         }
 
-        @Override
-        public abstract void add(ITupleReference tuple) throws HyracksDataException;
-
         protected void handleException() throws HyracksDataException {
             // Unlatch and unpin pages that weren't in the queue to avoid leaking memory.
             for (NodeFrontier nodeFrontier : nodeFrontiers) {
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/util/TreeIndexBufferCacheWarmup.java b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/util/TreeIndexBufferCacheWarmup.java
index 2b47238..959f27a 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/util/TreeIndexBufferCacheWarmup.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/util/TreeIndexBufferCacheWarmup.java
@@ -22,7 +22,7 @@
 import java.util.Random;
 
 import org.apache.hyracks.api.exceptions.HyracksDataException;
-import org.apache.hyracks.util.MathUtil;
+import org.apache.hyracks.api.io.FileReference;
 import org.apache.hyracks.storage.am.common.api.IMetadataPageManager;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexFrame;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexMetadataFrame;
@@ -30,25 +30,25 @@
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
+import org.apache.hyracks.util.MathUtil;
 
 public class TreeIndexBufferCacheWarmup {
     private final IBufferCache bufferCache;
     private final IMetadataPageManager freePageManager;
-    private final int fileId;
+    private final FileReference fileRef;
     private final ArrayList<IntArrayList> pagesByLevel = new ArrayList<>();
     private final Random rnd = new Random();
 
-    public TreeIndexBufferCacheWarmup(IBufferCache bufferCache,
-            IMetadataPageManager freePageManager, int fileId) {
+    public TreeIndexBufferCacheWarmup(IBufferCache bufferCache, IMetadataPageManager freePageManager,
+            FileReference fileRef) {
         this.bufferCache = bufferCache;
         this.freePageManager = freePageManager;
-        this.fileId = fileId;
+        this.fileRef = fileRef;
     }
 
-    public void warmup(ITreeIndexFrame frame,
-            ITreeIndexMetadataFrame metaFrame, int[] warmupTreeLevels,
+    public void warmup(ITreeIndexFrame frame, ITreeIndexMetadataFrame metaFrame, int[] warmupTreeLevels,
             int[] warmupRepeats) throws HyracksDataException {
-        bufferCache.openFile(fileId);
+        int fileId = bufferCache.openFile(fileRef);
 
         // scan entire file to determine pages in each level
         int maxPageId = freePageManager.getMaxPageId(metaFrame);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/util/TreeIndexStatsGatherer.java b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/util/TreeIndexStatsGatherer.java
index 7e14b4a..5410282 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/util/TreeIndexStatsGatherer.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/util/TreeIndexStatsGatherer.java
@@ -19,6 +19,7 @@
 package org.apache.hyracks.storage.am.common.util;
 
 import org.apache.hyracks.api.exceptions.HyracksDataException;
+import org.apache.hyracks.api.io.FileReference;
 import org.apache.hyracks.storage.am.common.api.IPageManager;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexFrame;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexMetadataFrame;
@@ -31,25 +32,21 @@
     private final TreeIndexStats treeIndexStats = new TreeIndexStats();
     private final IBufferCache bufferCache;
     private final IPageManager freePageManager;
-    private final int fileId;
+    private final FileReference fileRef;
     private final int rootPage;
 
-    public TreeIndexStatsGatherer(IBufferCache bufferCache,
-            IPageManager freePageManager, int fileId, int rootPage) {
+    public TreeIndexStatsGatherer(IBufferCache bufferCache, IPageManager freePageManager, FileReference fileRef,
+            int rootPage) {
         this.bufferCache = bufferCache;
         this.freePageManager = freePageManager;
-        this.fileId = fileId;
+        this.fileRef = fileRef;
         this.rootPage = rootPage;
     }
 
-    public TreeIndexStats gatherStats(ITreeIndexFrame leafFrame,
-            ITreeIndexFrame interiorFrame, ITreeIndexMetadataFrame metaFrame)
-            throws HyracksDataException {
-
-        bufferCache.openFile(fileId);
-
+    public TreeIndexStats gatherStats(ITreeIndexFrame leafFrame, ITreeIndexFrame interiorFrame,
+            ITreeIndexMetadataFrame metaFrame) throws HyracksDataException {
+        int fileId = bufferCache.openFile(fileRef);
         treeIndexStats.begin();
-
         int maxPageId = freePageManager.getMaxPageId(metaFrame);
         for (int pageId = 0; pageId <= maxPageId; pageId++) {
             ICachedPage page = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeLocalResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeLocalResource.java
index 6860b971..f1e9cf1 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeLocalResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeLocalResource.java
@@ -57,9 +57,9 @@
     public ILSMIndex createInstance(INCServiceContext serviceCtx) throws HyracksDataException {
         IIOManager ioManager = serviceCtx.getIoManager();
         FileReference file = ioManager.resolve(path);
-        return LSMBTreeUtil.createExternalBTree(ioManager, file, storageManager.getBufferCache(serviceCtx),
-                storageManager.getFileMapProvider(serviceCtx), typeTraits, cmpFactories, bloomFilterKeyFields,
-                bloomFilterFalsePositiveRate, mergePolicyFactory.createMergePolicy(mergePolicyProperties, serviceCtx),
+        return LSMBTreeUtil.createExternalBTree(ioManager, file, storageManager.getBufferCache(serviceCtx), typeTraits,
+                cmpFactories, bloomFilterKeyFields, bloomFilterFalsePositiveRate,
+                mergePolicyFactory.createMergePolicy(mergePolicyProperties, serviceCtx),
                 opTrackerProvider.getOperationTracker(serviceCtx), ioSchedulerProvider.getIoScheduler(serviceCtx),
                 ioOpCallbackFactory.createIoOpCallback(), durable, metadataPageManagerFactory);
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeWithBuddyLocalResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeWithBuddyLocalResource.java
index 3819066..317a479 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeWithBuddyLocalResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeWithBuddyLocalResource.java
@@ -61,7 +61,7 @@
         IIOManager ioManager = serviceCtx.getIoManager();
         FileReference file = ioManager.resolve(path);
         return LSMBTreeUtil.createExternalBTreeWithBuddy(ioManager, file, storageManager.getBufferCache(serviceCtx),
-                storageManager.getFileMapProvider(serviceCtx), typeTraits, cmpFactories, bloomFilterFalsePositiveRate,
+                typeTraits, cmpFactories, bloomFilterFalsePositiveRate,
                 mergePolicyFactory.createMergePolicy(mergePolicyProperties, serviceCtx),
                 opTrackerProvider.getOperationTracker(serviceCtx), ioSchedulerProvider.getIoScheduler(serviceCtx),
                 ioOpCallbackFactory.createIoOpCallback(), bloomFilterKeyFields, durable, metadataPageManagerFactory);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/LSMBTreeLocalResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/LSMBTreeLocalResource.java
index 6416f6b..f6e311c 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/LSMBTreeLocalResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/dataflow/LSMBTreeLocalResource.java
@@ -70,9 +70,9 @@
         IIOManager ioManager = serviceCtx.getIoManager();
         FileReference file = ioManager.resolve(path);
         List<IVirtualBufferCache> vbcs = vbcProvider.getVirtualBufferCaches(serviceCtx, file);
-        return LSMBTreeUtil.createLSMTree(ioManager, vbcs, file, storageManager.getBufferCache(serviceCtx),
-                storageManager.getFileMapProvider(serviceCtx), typeTraits, cmpFactories, bloomFilterKeyFields,
-                bloomFilterFalsePositiveRate, mergePolicyFactory.createMergePolicy(mergePolicyProperties, serviceCtx),
+        return LSMBTreeUtil.createLSMTree(ioManager, vbcs, file, storageManager.getBufferCache(serviceCtx), typeTraits,
+                cmpFactories, bloomFilterKeyFields, bloomFilterFalsePositiveRate,
+                mergePolicyFactory.createMergePolicy(mergePolicyProperties, serviceCtx),
                 opTrackerProvider.getOperationTracker(serviceCtx), ioSchedulerProvider.getIoScheduler(serviceCtx),
                 ioOpCallbackFactory.createIoOpCallback(), isPrimary, filterTypeTraits, filterCmpFactories, btreeFields,
                 filterFields, durable, metadataPageManagerFactory);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTree.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTree.java
index cdde692..c06edfd 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTree.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTree.java
@@ -62,7 +62,6 @@
 import org.apache.hyracks.storage.common.IModificationOperationCallback;
 import org.apache.hyracks.storage.common.ISearchOperationCallback;
 import org.apache.hyracks.storage.common.ISearchPredicate;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 /**
  * This is an lsm b-tree that does not have memory component and is modified
@@ -93,13 +92,12 @@
             ITreeIndexFrameFactory insertLeafFrameFactory, ITreeIndexFrameFactory deleteLeafFrameFactory,
             ILSMIndexFileManager fileManager, TreeIndexFactory<BTree> diskBTreeFactory,
             TreeIndexFactory<BTree> bulkLoadBTreeFactory, BloomFilterFactory bloomFilterFactory,
-            double bloomFilterFalsePositiveRate, IFileMapProvider diskFileMapProvider, int fieldCount,
-            IBinaryComparatorFactory[] cmpFactories, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
+            double bloomFilterFalsePositiveRate, IBinaryComparatorFactory[] cmpFactories, ILSMMergePolicy mergePolicy,
+            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
             TreeIndexFactory<BTree> transactionBTreeFactory, boolean durable) {
         super(ioManager, insertLeafFrameFactory, deleteLeafFrameFactory, fileManager, diskBTreeFactory,
-                bulkLoadBTreeFactory, bloomFilterFactory, bloomFilterFalsePositiveRate, diskFileMapProvider, fieldCount,
-                cmpFactories, mergePolicy, opTracker, ioScheduler, ioOpCallback, false, durable);
+                bulkLoadBTreeFactory, bloomFilterFactory, bloomFilterFalsePositiveRate, cmpFactories, mergePolicy,
+                opTracker, ioScheduler, ioOpCallback, false, durable);
         this.transactionComponentFactory =
                 new LSMBTreeDiskComponentFactory(transactionBTreeFactory, bloomFilterFactory, null);
         this.secondDiskComponents = new LinkedList<>();
@@ -301,21 +299,13 @@
             BlockingIOOperationCallbackWrapper cb = new BlockingIOOperationCallbackWrapper(ioOpCallback);
             cb.afterFinalize(LSMOperationType.FLUSH, null);
         }
-        for (ILSMComponent c : diskComponents) {
-            LSMBTreeDiskComponent component = (LSMBTreeDiskComponent) c;
-            BTree btree = component.getBTree();
-            BloomFilter bloomFilter = component.getBloomFilter();
-            btree.deactivateCloseHandle();
-            bloomFilter.deactivate();
+        for (ILSMDiskComponent c : diskComponents) {
+            deactivateDiskComponent(c);
         }
-        for (ILSMComponent c : secondDiskComponents) {
-            // Only deactivate non shared components (So components are not de-activated twice)
+        for (ILSMDiskComponent c : secondDiskComponents) {
+            // Only deactivate non shared components
             if (!diskComponents.contains(c)) {
-                LSMBTreeDiskComponent component = (LSMBTreeDiskComponent) c;
-                BTree btree = component.getBTree();
-                BloomFilter bloomFilter = component.getBloomFilter();
-                btree.deactivateCloseHandle();
-                bloomFilter.deactivate();
+                deactivateDiskComponent(c);
             }
         }
         isActive = false;
@@ -357,17 +347,13 @@
         if (isActive) {
             throw new HyracksDataException("Failed to destroy the index since it is activated.");
         }
-        for (ILSMComponent c : diskComponents) {
-            LSMBTreeDiskComponent component = (LSMBTreeDiskComponent) c;
-            component.getBTree().destroy();
-            component.getBloomFilter().destroy();
+        for (ILSMDiskComponent c : diskComponents) {
+            destroyDiskComponent(c);
             // Remove from second list to avoid destroying twice
             secondDiskComponents.remove(c);
         }
-        for (ILSMComponent c : secondDiskComponents) {
-            LSMBTreeDiskComponent component = (LSMBTreeDiskComponent) c;
-            component.getBTree().destroy();
-            component.getBloomFilter().destroy();
+        for (ILSMDiskComponent c : secondDiskComponents) {
+            destroyDiskComponent(c);
         }
         diskComponents.clear();
         secondDiskComponents.clear();
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTreeWithBuddy.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTreeWithBuddy.java
index 1c99b17..9959583 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTreeWithBuddy.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTreeWithBuddy.java
@@ -72,7 +72,6 @@
 import org.apache.hyracks.storage.common.ISearchPredicate;
 import org.apache.hyracks.storage.common.MultiComparator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class ExternalBTreeWithBuddy extends AbstractLSMIndex implements ITreeIndex, ITwoPCIndex {
 
@@ -100,12 +99,12 @@
             IBufferCache diskBufferCache, ILSMIndexFileManager fileManager,
             TreeIndexFactory<BTree> bulkLoadBTreeFactory, TreeIndexFactory<BTree> copyBtreeFactory,
             TreeIndexFactory<BTree> buddyBtreeFactory, BloomFilterFactory bloomFilterFactory,
-            IFileMapProvider diskFileMapProvider, double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy,
-            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
+            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
+            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
             IBinaryComparatorFactory[] btreeCmpFactories, IBinaryComparatorFactory[] buddyBtreeCmpFactories,
             int[] buddyBTreeFields, boolean durable) {
-        super(ioManager, diskBufferCache, fileManager, diskFileMapProvider, bloomFilterFalsePositiveRate, mergePolicy,
-                opTracker, ioScheduler, ioOpCallback, durable);
+        super(ioManager, diskBufferCache, fileManager, bloomFilterFalsePositiveRate, mergePolicy, opTracker,
+                ioScheduler, ioOpCallback, durable);
         this.btreeCmpFactories = btreeCmpFactories;
         this.buddyBtreeCmpFactories = buddyBtreeCmpFactories;
         this.buddyBTreeFields = buddyBTreeFields;
@@ -121,12 +120,7 @@
 
     @Override
     public void create() throws HyracksDataException {
-        if (isActive) {
-            throw new HyracksDataException("Failed to create the index since it is activated.");
-        }
-        fileManager.deleteDirs();
-        fileManager.createDirs();
-        diskComponents.clear();
+        super.create();
         secondDiskComponents.clear();
     }
 
@@ -773,14 +767,12 @@
         BTree btree = component.getBTree();
         BTree buddyBtree = component.getBuddyBTree();
         BloomFilter bloomFilter = component.getBloomFilter();
-        btree.deactivateCloseHandle();
-        buddyBtree.deactivateCloseHandle();
+        btree.deactivate();
+        buddyBtree.deactivate();
         bloomFilter.deactivate();
-    }
-
-    @Override
-    protected void destroyMemoryComponent(ILSMMemoryComponent c) throws HyracksDataException {
-        //do nothing since external index never use memory components
+        btree.purge();
+        buddyBtree.purge();
+        bloomFilter.purge();
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTree.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTree.java
index e830b3e..a5c59d6 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTree.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTree.java
@@ -76,7 +76,6 @@
 import org.apache.hyracks.storage.common.ISearchPredicate;
 import org.apache.hyracks.storage.common.MultiComparator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMBTree extends AbstractLSMIndex implements ITreeIndex {
 
@@ -103,11 +102,11 @@
             TreeIndexFactory<BTree> diskBTreeFactory, TreeIndexFactory<BTree> bulkLoadBTreeFactory,
             BloomFilterFactory bloomFilterFactory, IComponentFilterHelper filterHelper,
             ILSMComponentFilterFrameFactory filterFrameFactory, LSMComponentFilterManager filterManager,
-            double bloomFilterFalsePositiveRate, IFileMapProvider diskFileMapProvider, int fieldCount,
-            IBinaryComparatorFactory[] cmpFactories, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, boolean needKeyDupCheck,
-            int[] btreeFields, int[] filterFields, boolean durable) throws HyracksDataException {
-        super(ioManager, virtualBufferCaches, diskBTreeFactory.getBufferCache(), fileManager, diskFileMapProvider,
+            double bloomFilterFalsePositiveRate, int fieldCount, IBinaryComparatorFactory[] cmpFactories,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, boolean needKeyDupCheck, int[] btreeFields, int[] filterFields,
+            boolean durable) throws HyracksDataException {
+        super(ioManager, virtualBufferCaches, diskBTreeFactory.getBufferCache(), fileManager,
                 bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback, filterFrameFactory,
                 filterManager, filterFields, durable, filterHelper, btreeFields);
         this.insertLeafFrameFactory = insertLeafFrameFactory;
@@ -116,8 +115,7 @@
         int i = 0;
         for (IVirtualBufferCache virtualBufferCache : virtualBufferCaches) {
             LSMBTreeMemoryComponent mutableComponent = new LSMBTreeMemoryComponent(
-                    new BTree(virtualBufferCache, virtualBufferCache.getFileMapProvider(),
-                            new VirtualFreePageManager(virtualBufferCache), interiorFrameFactory,
+                    new BTree(virtualBufferCache, new VirtualFreePageManager(virtualBufferCache), interiorFrameFactory,
                             insertLeafFrameFactory, cmpFactories, fieldCount,
                             ioManager.resolveAbsolutePath(fileManager.getBaseDir() + "_virtual_" + i)),
                     virtualBufferCache, i == 0 ? true : false,
@@ -137,19 +135,18 @@
             ITreeIndexFrameFactory deleteLeafFrameFactory, ILSMIndexFileManager fileManager,
             TreeIndexFactory<BTree> diskBTreeFactory, TreeIndexFactory<BTree> bulkLoadBTreeFactory,
             BloomFilterFactory bloomFilterFactory, double bloomFilterFalsePositiveRate,
-            IFileMapProvider diskFileMapProvider, int fieldCount, IBinaryComparatorFactory[] cmpFactories,
-            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
-            ILSMIOOperationCallback ioOpCallback, boolean needKeyDupCheck, boolean durable) {
-        super(ioManager, diskBTreeFactory.getBufferCache(), fileManager, diskFileMapProvider,
-                bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback, durable);
+            IBinaryComparatorFactory[] cmpFactories, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
+            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, boolean needKeyDupCheck,
+            boolean durable) {
+        super(ioManager, diskBTreeFactory.getBufferCache(), fileManager, bloomFilterFalsePositiveRate, mergePolicy,
+                opTracker, ioScheduler, ioOpCallback, durable);
         this.insertLeafFrameFactory = insertLeafFrameFactory;
         this.deleteLeafFrameFactory = deleteLeafFrameFactory;
         this.cmpFactories = cmpFactories;
+        this.needKeyDupCheck = needKeyDupCheck;
+        this.hasBloomFilter = true;
         componentFactory = new LSMBTreeDiskComponentFactory(diskBTreeFactory, bloomFilterFactory, null);
         bulkLoadComponentFactory = new LSMBTreeDiskComponentFactory(bulkLoadBTreeFactory, bloomFilterFactory, null);
-        this.needKeyDupCheck = needKeyDupCheck;
-        //TODO remove BloomFilter from external dataset's secondary LSMBTree index
-        this.hasBloomFilter = true;
     }
 
     public boolean hasBloomFilter() {
@@ -183,12 +180,6 @@
     }
 
     @Override
-    protected void destroyMemoryComponent(ILSMMemoryComponent c) throws HyracksDataException {
-        LSMBTreeMemoryComponent mutableComponent = (LSMBTreeMemoryComponent) c;
-        mutableComponent.getBTree().destroy();
-    }
-
-    @Override
     protected void clearDiskComponent(ILSMDiskComponent c) throws HyracksDataException {
         LSMBTreeDiskComponent component = (LSMBTreeDiskComponent) c;
         if (hasBloomFilter) {
@@ -587,9 +578,11 @@
     @Override
     protected void deactivateDiskComponent(ILSMDiskComponent c) throws HyracksDataException {
         LSMBTreeDiskComponent component = (LSMBTreeDiskComponent) c;
-        component.getBTree().deactivateCloseHandle();
+        component.getBTree().deactivate();
+        component.getBTree().purge();
         if (hasBloomFilter) {
             component.getBloomFilter().deactivate();
+            component.getBloomFilter().purge();
         }
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeFileManager.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeFileManager.java
index 194eb3a..432a2b8 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeFileManager.java
@@ -37,17 +37,15 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.AbstractLSMIndexFileManager;
 import org.apache.hyracks.storage.am.lsm.common.impls.LSMComponentFileReferences;
 import org.apache.hyracks.storage.am.lsm.common.impls.TreeIndexFactory;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMBTreeFileManager extends AbstractLSMIndexFileManager {
-    public static final String BTREE_STRING = "b";
 
     private final TreeIndexFactory<? extends ITreeIndex> btreeFactory;
     private final boolean hasBloomFilter;
 
-    public LSMBTreeFileManager(IIOManager ioManager, IFileMapProvider fileMapProvider, FileReference file,
+    public LSMBTreeFileManager(IIOManager ioManager, FileReference file,
             TreeIndexFactory<? extends ITreeIndex> btreeFactory, boolean hasBloomFilter) {
-        super(ioManager, fileMapProvider, file, null);
+        super(ioManager, file, null);
         this.btreeFactory = btreeFactory;
         this.hasBloomFilter = hasBloomFilter;
     }
@@ -55,28 +53,28 @@
     @Override
     public LSMComponentFileReferences getRelFlushFileReference() throws HyracksDataException {
         String ts = getCurrentTimestamp();
-        String baseName = baseDir + ts + SPLIT_STRING + ts;
+        String baseName = baseDir + ts + DELIMITER + ts;
         // Begin timestamp and end timestamp are identical since it is a flush
-        return new LSMComponentFileReferences(createFlushFile(baseName + SPLIT_STRING + BTREE_STRING), null,
-                hasBloomFilter ? createFlushFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING) : null);
+        return new LSMComponentFileReferences(createFlushFile(baseName + DELIMITER + BTREE_SUFFIX), null,
+                hasBloomFilter ? createFlushFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX) : null);
     }
 
     @Override
     public LSMComponentFileReferences getRelMergeFileReference(String firstFileName, String lastFileName)
             throws HyracksDataException {
-        String[] firstTimestampRange = firstFileName.split(SPLIT_STRING);
-        String[] lastTimestampRange = lastFileName.split(SPLIT_STRING);
+        String[] firstTimestampRange = firstFileName.split(DELIMITER);
+        String[] lastTimestampRange = lastFileName.split(DELIMITER);
 
-        String baseName = baseDir + firstTimestampRange[0] + SPLIT_STRING + lastTimestampRange[1];
+        String baseName = baseDir + firstTimestampRange[0] + DELIMITER + lastTimestampRange[1];
         // Get the range of timestamps by taking the earliest and the latest timestamps
-        return new LSMComponentFileReferences(createMergeFile(baseName + SPLIT_STRING + BTREE_STRING), null,
-                hasBloomFilter ? createMergeFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING) : null);
+        return new LSMComponentFileReferences(createMergeFile(baseName + DELIMITER + BTREE_SUFFIX), null,
+                hasBloomFilter ? createMergeFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX) : null);
     }
 
     private static FilenameFilter btreeFilter = new FilenameFilter() {
         @Override
         public boolean accept(File dir, String name) {
-            return !name.startsWith(".") && name.endsWith(BTREE_STRING);
+            return !name.startsWith(".") && name.endsWith(BTREE_SUFFIX);
         }
     };
 
@@ -95,7 +93,7 @@
         cleanupAndGetValidFilesInternal(getCompoundFilter(transactionFilter, btreeFilter), btreeFactory, allBTreeFiles);
         HashSet<String> btreeFilesSet = new HashSet<>();
         for (ComparableFileName cmpFileName : allBTreeFiles) {
-            int index = cmpFileName.fileName.lastIndexOf(SPLIT_STRING);
+            int index = cmpFileName.fileName.lastIndexOf(DELIMITER);
             btreeFilesSet.add(cmpFileName.fileName.substring(0, index));
         }
 
@@ -200,19 +198,19 @@
     public LSMComponentFileReferences getNewTransactionFileReference() throws IOException {
         String ts = getCurrentTimestamp();
         // Create transaction lock file
-        Files.createFile(Paths.get(baseDir + TRANSACTION_PREFIX + ts));
+        Files.createFile(Paths.get(baseDir + TXN_PREFIX + ts));
 
-        String baseName = baseDir + ts + SPLIT_STRING + ts;
+        String baseName = baseDir + ts + DELIMITER + ts;
         // Begin timestamp and end timestamp are identical since it is a transaction
-        return new LSMComponentFileReferences(createFlushFile(baseName + SPLIT_STRING + BTREE_STRING), null,
-                createFlushFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        return new LSMComponentFileReferences(createFlushFile(baseName + DELIMITER + BTREE_SUFFIX), null,
+                createFlushFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
     public LSMComponentFileReferences getTransactionFileReferenceForCommit() throws HyracksDataException {
         FilenameFilter transactionFilter;
         File dir = new File(baseDir);
-        String[] files = dir.list(transactionFileNameFilter);
+        String[] files = dir.list(txnFileNameFilter);
         if (files.length == 0) {
             return null;
         }
@@ -236,9 +234,9 @@
         File bloomFilterFile = null;
 
         for (String fileName : files) {
-            if (fileName.endsWith(BTREE_STRING)) {
+            if (fileName.endsWith(BTREE_SUFFIX)) {
                 bTreeFile = new File(dir.getPath() + File.separator + fileName);
-            } else if (fileName.endsWith(BLOOM_FILTER_STRING)) {
+            } else if (fileName.endsWith(BLOOM_FILTER_SUFFIX)) {
                 bloomFilterFile = new File(dir.getPath() + File.separator + fileName);
             } else {
                 throw new HyracksDataException("unrecognized file found = " + fileName);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeWithBuddyFileManager.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeWithBuddyFileManager.java
index 0173c06..c866a45 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeWithBuddyFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeWithBuddyFileManager.java
@@ -36,11 +36,8 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.AbstractLSMIndexFileManager;
 import org.apache.hyracks.storage.am.lsm.common.impls.LSMComponentFileReferences;
 import org.apache.hyracks.storage.am.lsm.common.impls.TreeIndexFactory;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMBTreeWithBuddyFileManager extends AbstractLSMIndexFileManager {
-    public static final String BUDDY_BTREE_STRING = "buddy";
-    public static final String BTREE_STRING = "b";
 
     private final TreeIndexFactory<? extends ITreeIndex> btreeFactory;
     private final TreeIndexFactory<? extends ITreeIndex> buddyBtreeFactory;
@@ -48,21 +45,21 @@
     private static FilenameFilter btreeFilter = new FilenameFilter() {
         @Override
         public boolean accept(File dir, String name) {
-            return !name.startsWith(".") && name.endsWith(BTREE_STRING);
+            return !name.startsWith(".") && name.endsWith(BTREE_SUFFIX);
         }
     };
 
     private static FilenameFilter buddyBtreeFilter = new FilenameFilter() {
         @Override
         public boolean accept(File dir, String name) {
-            return !name.startsWith(".") && name.endsWith(BUDDY_BTREE_STRING);
+            return !name.startsWith(".") && name.endsWith(DELETE_TREE_SUFFIX);
         }
     };
 
-    public LSMBTreeWithBuddyFileManager(IIOManager ioManager, IFileMapProvider fileMapProvider, FileReference file,
+    public LSMBTreeWithBuddyFileManager(IIOManager ioManager, FileReference file,
             TreeIndexFactory<? extends ITreeIndex> btreeFactory,
             TreeIndexFactory<? extends ITreeIndex> buddyBtreeFactory) {
-        super(ioManager, fileMapProvider, file, null);
+        super(ioManager, file, null);
         this.buddyBtreeFactory = buddyBtreeFactory;
         this.btreeFactory = btreeFactory;
     }
@@ -70,25 +67,25 @@
     @Override
     public LSMComponentFileReferences getRelFlushFileReference() throws HyracksDataException {
         String ts = getCurrentTimestamp();
-        String baseName = baseDir + ts + SPLIT_STRING + ts;
+        String baseName = baseDir + ts + DELIMITER + ts;
         // Begin timestamp and end timestamp are identical since it is a flush
-        return new LSMComponentFileReferences(createFlushFile(baseName + SPLIT_STRING + BTREE_STRING),
-                createFlushFile(baseName + SPLIT_STRING + BUDDY_BTREE_STRING),
-                createFlushFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        return new LSMComponentFileReferences(createFlushFile(baseName + DELIMITER + BTREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + DELETE_TREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
     public LSMComponentFileReferences getRelMergeFileReference(String firstFileName, String lastFileName)
             throws HyracksDataException {
-        String[] firstTimestampRange = firstFileName.split(SPLIT_STRING);
-        String[] lastTimestampRange = lastFileName.split(SPLIT_STRING);
+        String[] firstTimestampRange = firstFileName.split(DELIMITER);
+        String[] lastTimestampRange = lastFileName.split(DELIMITER);
 
-        String baseName = baseDir + firstTimestampRange[0] + SPLIT_STRING + lastTimestampRange[1];
+        String baseName = baseDir + firstTimestampRange[0] + DELIMITER + lastTimestampRange[1];
         // Get the range of timestamps by taking the earliest and the latest
         // timestamps
-        return new LSMComponentFileReferences(createMergeFile(baseName + SPLIT_STRING + BTREE_STRING),
-                createMergeFile(baseName + SPLIT_STRING + BUDDY_BTREE_STRING),
-                createMergeFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        return new LSMComponentFileReferences(createMergeFile(baseName + DELIMITER + BTREE_SUFFIX),
+                createMergeFile(baseName + DELIMITER + DELETE_TREE_SUFFIX),
+                createMergeFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
@@ -106,7 +103,7 @@
                 allBTreeFiles);
         HashSet<String> btreeFilesSet = new HashSet<>();
         for (ComparableFileName cmpFileName : allBTreeFiles) {
-            int index = cmpFileName.fileName.lastIndexOf(SPLIT_STRING);
+            int index = cmpFileName.fileName.lastIndexOf(DELIMITER);
             btreeFilesSet.add(cmpFileName.fileName.substring(0, index));
         }
         validateFiles(btreeFilesSet, allBuddyBTreeFiles, getCompoundFilter(buddyBtreeFilter, transactionFilefilter),
@@ -206,19 +203,19 @@
     public LSMComponentFileReferences getNewTransactionFileReference() throws IOException {
         String ts = getCurrentTimestamp();
         // Create transaction lock file
-        Files.createFile(Paths.get(baseDir + TRANSACTION_PREFIX + ts));
+        Files.createFile(Paths.get(baseDir + TXN_PREFIX + ts));
 
-        String baseName = baseDir + ts + SPLIT_STRING + ts;
-        return new LSMComponentFileReferences(createFlushFile(baseName + SPLIT_STRING + BTREE_STRING),
-                createFlushFile(baseName + SPLIT_STRING + BUDDY_BTREE_STRING),
-                createFlushFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        String baseName = baseDir + ts + DELIMITER + ts;
+        return new LSMComponentFileReferences(createFlushFile(baseName + DELIMITER + BTREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + DELETE_TREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
     public LSMComponentFileReferences getTransactionFileReferenceForCommit() throws HyracksDataException {
         FilenameFilter transactionFilter;
         File dir = new File(baseDir);
-        String[] files = dir.list(transactionFileNameFilter);
+        String[] files = dir.list(txnFileNameFilter);
         if (files.length == 0) {
             return null;
         }
@@ -243,11 +240,11 @@
         File buddyBTreeFile = null;
         File bloomFilterFile = null;
         for (String fileName : files) {
-            if (fileName.endsWith(BTREE_STRING)) {
+            if (fileName.endsWith(BTREE_SUFFIX)) {
                 bTreeFile = new File(dir.getPath() + File.separator + fileName);
-            } else if (fileName.endsWith(BUDDY_BTREE_STRING)) {
+            } else if (fileName.endsWith(DELETE_TREE_SUFFIX)) {
                 buddyBTreeFile = new File(dir.getPath() + File.separator + fileName);
-            } else if (fileName.endsWith(BLOOM_FILTER_STRING)) {
+            } else if (fileName.endsWith(BLOOM_FILTER_SUFFIX)) {
                 bloomFilterFile = new File(dir.getPath() + File.separator + fileName);
             } else {
                 throw new HyracksDataException("unrecognized file found = " + fileName);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/utils/LSMBTreeUtil.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/utils/LSMBTreeUtil.java
index 259f25f..792b872 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/utils/LSMBTreeUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/utils/LSMBTreeUtil.java
@@ -52,7 +52,6 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.LSMComponentFilterManager;
 import org.apache.hyracks.storage.am.lsm.common.impls.TreeIndexFactory;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMBTreeUtil {
 
@@ -60,13 +59,12 @@
     }
 
     public static LSMBTree createLSMTree(IIOManager ioManager, List<IVirtualBufferCache> virtualBufferCaches,
-            FileReference file, IBufferCache diskBufferCache, IFileMapProvider diskFileMapProvider,
-            ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories, int[] bloomFilterKeyFields,
-            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, boolean needKeyDupCheck,
-            ITypeTraits[] filterTypeTraits, IBinaryComparatorFactory[] filterCmpFactories, int[] btreeFields,
-            int[] filterFields, boolean durable, IMetadataPageManagerFactory freePageManagerFactory)
-            throws HyracksDataException {
+            FileReference file, IBufferCache diskBufferCache, ITypeTraits[] typeTraits,
+            IBinaryComparatorFactory[] cmpFactories, int[] bloomFilterKeyFields, double bloomFilterFalsePositiveRate,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, boolean needKeyDupCheck, ITypeTraits[] filterTypeTraits,
+            IBinaryComparatorFactory[] filterCmpFactories, int[] btreeFields, int[] filterFields, boolean durable,
+            IMetadataPageManagerFactory freePageManagerFactory) throws HyracksDataException {
         LSMBTreeTupleWriterFactory insertTupleWriterFactory =
                 new LSMBTreeTupleWriterFactory(typeTraits, cmpFactories.length, false);
         LSMBTreeTupleWriterFactory deleteTupleWriterFactory =
@@ -82,15 +80,14 @@
         ITreeIndexFrameFactory interiorFrameFactory = new BTreeNSMInteriorFrameFactory(insertTupleWriterFactory);
         ITreeIndexFrameFactory bulkLoadLeafFrameFactory = new BTreeNSMLeafFrameFactory(bulkLoadTupleWriterFactory);
 
-        TreeIndexFactory<BTree> diskBTreeFactory =
-                new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider, freePageManagerFactory,
-                        interiorFrameFactory, copyTupleLeafFrameFactory, cmpFactories, typeTraits.length);
+        TreeIndexFactory<BTree> diskBTreeFactory = new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory,
+                interiorFrameFactory, copyTupleLeafFrameFactory, cmpFactories, typeTraits.length);
         TreeIndexFactory<BTree> bulkLoadBTreeFactory =
-                new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider, freePageManagerFactory,
-                        interiorFrameFactory, bulkLoadLeafFrameFactory, cmpFactories, typeTraits.length);
+                new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory, interiorFrameFactory,
+                        bulkLoadLeafFrameFactory, cmpFactories, typeTraits.length);
 
-        BloomFilterFactory bloomFilterFactory = needKeyDupCheck
-                ? new BloomFilterFactory(diskBufferCache, diskFileMapProvider, bloomFilterKeyFields) : null;
+        BloomFilterFactory bloomFilterFactory =
+                needKeyDupCheck ? new BloomFilterFactory(diskBufferCache, bloomFilterKeyFields) : null;
 
         ComponentFilterHelper filterHelper = null;
         LSMComponentFilterFrameFactory filterFrameFactory = null;
@@ -104,20 +101,20 @@
 
         //Primary LSMBTree index has a BloomFilter.
         ILSMIndexFileManager fileNameManager =
-                new LSMBTreeFileManager(ioManager, diskFileMapProvider, file, diskBTreeFactory, needKeyDupCheck);
+                new LSMBTreeFileManager(ioManager, file, diskBTreeFactory, needKeyDupCheck);
 
         return new LSMBTree(ioManager, virtualBufferCaches, interiorFrameFactory, insertLeafFrameFactory,
                 deleteLeafFrameFactory, fileNameManager, diskBTreeFactory, bulkLoadBTreeFactory, bloomFilterFactory,
-                filterHelper, filterFrameFactory, filterManager, bloomFilterFalsePositiveRate, diskFileMapProvider,
-                typeTraits.length, cmpFactories, mergePolicy, opTracker, ioScheduler, ioOpCallback, needKeyDupCheck,
-                btreeFields, filterFields, durable);
+                filterHelper, filterFrameFactory, filterManager, bloomFilterFalsePositiveRate, typeTraits.length,
+                cmpFactories, mergePolicy, opTracker, ioScheduler, ioOpCallback, needKeyDupCheck, btreeFields,
+                filterFields, durable);
     }
 
     public static ExternalBTree createExternalBTree(IIOManager ioManager, FileReference file,
-            IBufferCache diskBufferCache, IFileMapProvider diskFileMapProvider, ITypeTraits[] typeTraits,
-            IBinaryComparatorFactory[] cmpFactories, int[] bloomFilterKeyFields, double bloomFilterFalsePositiveRate,
-            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
-            ILSMIOOperationCallback ioOpCallback, boolean durable, IMetadataPageManagerFactory freePageManagerFactory) {
+            IBufferCache diskBufferCache, ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories,
+            int[] bloomFilterKeyFields, double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy,
+            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
+            boolean durable, IMetadataPageManagerFactory freePageManagerFactory) {
         LSMBTreeTupleWriterFactory insertTupleWriterFactory =
                 new LSMBTreeTupleWriterFactory(typeTraits, cmpFactories.length, false);
         LSMBTreeTupleWriterFactory deleteTupleWriterFactory =
@@ -136,35 +133,31 @@
         ITreeIndexFrameFactory transactionLeafFrameFactory =
                 new BTreeNSMLeafFrameFactory(transactionTupleWriterFactory);
 
-        TreeIndexFactory<BTree> diskBTreeFactory =
-                new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider, freePageManagerFactory,
-                        interiorFrameFactory, copyTupleLeafFrameFactory, cmpFactories, typeTraits.length);
-        TreeIndexFactory<BTree> bulkLoadBTreeFactory = new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider,
+        TreeIndexFactory<BTree> diskBTreeFactory = new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory,
+                interiorFrameFactory, copyTupleLeafFrameFactory, cmpFactories, typeTraits.length);
+        TreeIndexFactory<BTree> bulkLoadBTreeFactory = new BTreeFactory(ioManager, diskBufferCache,
                 freePageManagerFactory, interiorFrameFactory, insertLeafFrameFactory, cmpFactories, typeTraits.length);
 
-        BloomFilterFactory bloomFilterFactory =
-                new BloomFilterFactory(diskBufferCache, diskFileMapProvider, bloomFilterKeyFields);
+        BloomFilterFactory bloomFilterFactory = new BloomFilterFactory(diskBufferCache, bloomFilterKeyFields);
 
         // This is the component factory for transactions
         TreeIndexFactory<BTree> transactionBTreeFactory =
-                new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider, freePageManagerFactory,
-                        interiorFrameFactory, transactionLeafFrameFactory, cmpFactories, typeTraits.length);
+                new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory, interiorFrameFactory,
+                        transactionLeafFrameFactory, cmpFactories, typeTraits.length);
         //TODO remove BloomFilter from external dataset's secondary LSMBTree index
-        ILSMIndexFileManager fileNameManager =
-                new LSMBTreeFileManager(ioManager, diskFileMapProvider, file, diskBTreeFactory, true);
+        ILSMIndexFileManager fileNameManager = new LSMBTreeFileManager(ioManager, file, diskBTreeFactory, true);
         // the disk only index uses an empty ArrayList for virtual buffer caches
-        ExternalBTree lsmTree = new ExternalBTree(ioManager, interiorFrameFactory, insertLeafFrameFactory,
-                deleteLeafFrameFactory, fileNameManager, diskBTreeFactory, bulkLoadBTreeFactory, bloomFilterFactory,
-                bloomFilterFalsePositiveRate, diskFileMapProvider, typeTraits.length, cmpFactories, mergePolicy,
-                opTracker, ioScheduler, ioOpCallback, transactionBTreeFactory, durable);
-        return lsmTree;
+        return new ExternalBTree(ioManager, interiorFrameFactory, insertLeafFrameFactory, deleteLeafFrameFactory,
+                fileNameManager, diskBTreeFactory, bulkLoadBTreeFactory, bloomFilterFactory,
+                bloomFilterFalsePositiveRate, cmpFactories, mergePolicy, opTracker, ioScheduler, ioOpCallback,
+                transactionBTreeFactory, durable);
     }
 
     public static ExternalBTreeWithBuddy createExternalBTreeWithBuddy(IIOManager ioManager, FileReference file,
-            IBufferCache diskBufferCache, IFileMapProvider diskFileMapProvider, ITypeTraits[] typeTraits,
-            IBinaryComparatorFactory[] cmpFactories, double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy,
-            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-            int[] buddyBTreeFields, boolean durable, IMetadataPageManagerFactory freePageManagerFactory) {
+            IBufferCache diskBufferCache, ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories,
+            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
+            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, int[] buddyBTreeFields,
+            boolean durable, IMetadataPageManagerFactory freePageManagerFactory) {
         ITypeTraits[] buddyBtreeTypeTraits = new ITypeTraits[buddyBTreeFields.length];
         IBinaryComparatorFactory[] buddyBtreeCmpFactories = new IBinaryComparatorFactory[buddyBTreeFields.length];
         for (int i = 0; i < buddyBtreeTypeTraits.length; i++) {
@@ -184,32 +177,30 @@
         ITreeIndexFrameFactory insertLeafFrameFactory = new BTreeNSMLeafFrameFactory(insertTupleWriterFactory);
         ITreeIndexFrameFactory copyTupleLeafFrameFactory = new BTreeNSMLeafFrameFactory(copyTupleWriterFactory);
         ITreeIndexFrameFactory interiorFrameFactory = new BTreeNSMInteriorFrameFactory(insertTupleWriterFactory);
-        TreeIndexFactory<BTree> diskBTreeFactory =
-                new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider, freePageManagerFactory,
-                        interiorFrameFactory, copyTupleLeafFrameFactory, cmpFactories, typeTraits.length);
+        TreeIndexFactory<BTree> diskBTreeFactory = new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory,
+                interiorFrameFactory, copyTupleLeafFrameFactory, cmpFactories, typeTraits.length);
 
-        TreeIndexFactory<BTree> bulkLoadBTreeFactory = new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider,
+        TreeIndexFactory<BTree> bulkLoadBTreeFactory = new BTreeFactory(ioManager, diskBufferCache,
                 freePageManagerFactory, interiorFrameFactory, insertLeafFrameFactory, cmpFactories, typeTraits.length);
 
         int[] bloomFilterKeyFields = new int[buddyBtreeCmpFactories.length];
         for (int i = 0; i < buddyBtreeCmpFactories.length; i++) {
             bloomFilterKeyFields[i] = i;
         }
-        BloomFilterFactory bloomFilterFactory =
-                new BloomFilterFactory(diskBufferCache, diskFileMapProvider, bloomFilterKeyFields);
+        BloomFilterFactory bloomFilterFactory = new BloomFilterFactory(diskBufferCache, bloomFilterKeyFields);
 
         // buddy b-tree factory
-        TreeIndexFactory<BTree> diskBuddyBTreeFactory = new BTreeFactory(ioManager, diskBufferCache,
-                diskFileMapProvider, freePageManagerFactory, buddyBtreeInteriorFrameFactory, buddyBtreeLeafFrameFactory,
-                buddyBtreeCmpFactories, buddyBtreeTypeTraits.length);
+        TreeIndexFactory<BTree> diskBuddyBTreeFactory =
+                new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory, buddyBtreeInteriorFrameFactory,
+                        buddyBtreeLeafFrameFactory, buddyBtreeCmpFactories, buddyBtreeTypeTraits.length);
 
-        ILSMIndexFileManager fileNameManager = new LSMBTreeWithBuddyFileManager(ioManager, diskFileMapProvider, file,
-                diskBTreeFactory, diskBuddyBTreeFactory);
+        ILSMIndexFileManager fileNameManager =
+                new LSMBTreeWithBuddyFileManager(ioManager, file, diskBTreeFactory, diskBuddyBTreeFactory);
 
         // the disk only index uses an empty ArrayList for virtual buffer caches
         ExternalBTreeWithBuddy lsmTree = new ExternalBTreeWithBuddy(ioManager, interiorFrameFactory,
                 insertLeafFrameFactory, buddyBtreeLeafFrameFactory, diskBufferCache, fileNameManager,
-                bulkLoadBTreeFactory, diskBTreeFactory, diskBuddyBTreeFactory, bloomFilterFactory, diskFileMapProvider,
+                bulkLoadBTreeFactory, diskBTreeFactory, diskBuddyBTreeFactory, bloomFilterFactory,
                 bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback, cmpFactories,
                 buddyBtreeCmpFactories, buddyBTreeFields, durable);
         return lsmTree;
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/pom.xml b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/pom.xml
index bc1e146..37e1c49 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/pom.xml
@@ -82,8 +82,9 @@
       <artifactId>commons-lang3</artifactId>
     </dependency>
     <dependency>
-      <groupId>commons-io</groupId>
-      <artifactId>commons-io</artifactId>
+      <groupId>org.apache.hyracks</groupId>
+      <artifactId>hyracks-util</artifactId>
+      <version>${project.version}</version>
     </dependency>
   </dependencies>
 </project>
\ No newline at end of file
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/api/ILSMIndexFileManager.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/api/ILSMIndexFileManager.java
index 54d64af..18d9a67 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/api/ILSMIndexFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/api/ILSMIndexFileManager.java
@@ -34,28 +34,28 @@
  * merge).
  */
 public interface ILSMIndexFileManager {
-    public void createDirs();
+    void createDirs() throws HyracksDataException;
 
-    public void deleteDirs() throws HyracksDataException;
+    void deleteDirs() throws HyracksDataException;
 
-    public LSMComponentFileReferences getRelFlushFileReference() throws HyracksDataException;
+    LSMComponentFileReferences getRelFlushFileReference() throws HyracksDataException;
 
-    public LSMComponentFileReferences getRelMergeFileReference(String firstFileName, String lastFileName)
+    LSMComponentFileReferences getRelMergeFileReference(String firstFileName, String lastFileName)
             throws HyracksDataException;
 
-    public String getBaseDir();
+    String getBaseDir();
 
     // Deletes invalid files, and returns list of valid files from baseDir.
     // The returned valid files are correctly sorted (based on the recency of data).
-    public List<LSMComponentFileReferences> cleanupAndGetValidFiles() throws HyracksDataException;
+    List<LSMComponentFileReferences> cleanupAndGetValidFiles() throws HyracksDataException;
 
-    public Comparator<String> getFileNameComparator();
+    Comparator<String> getFileNameComparator();
 
     /**
      * @return delete existing transaction disk component file reference
      * @throws HyracksDataException
      */
-    public void deleteTransactionFiles() throws HyracksDataException;
+    void deleteTransactionFiles() throws HyracksDataException;
 
     /**
      * Rename files of a transaction removing the transaction prefix and return the component file reference in order to be committed
@@ -63,18 +63,18 @@
      * @return the renamed component file references
      * @throws HyracksDataException
      */
-    public LSMComponentFileReferences getTransactionFileReferenceForCommit() throws HyracksDataException;
+    LSMComponentFileReferences getTransactionFileReferenceForCommit() throws HyracksDataException;
 
     /**
      * Recover transaction files without returning them
      *
      * @throws HyracksDataException
      */
-    public void recoverTransaction() throws HyracksDataException;
+    void recoverTransaction() throws HyracksDataException;
 
     /**
      * @return a reference to the transaction disk component file reference
      * @throws IOException
      */
-    public LSMComponentFileReferences getNewTransactionFileReference() throws IOException;
+    LSMComponentFileReferences getNewTransactionFileReference() throws IOException;
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbortRecoverLSMIndexFileManager.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbortRecoverLSMIndexFileManager.java
index 090ca68..72d5423 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbortRecoverLSMIndexFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbortRecoverLSMIndexFileManager.java
@@ -23,6 +23,6 @@
 
 public class AbortRecoverLSMIndexFileManager extends AbstractLSMIndexFileManager {
     public AbortRecoverLSMIndexFileManager(IIOManager ioManager, FileReference file) {
-        super(ioManager, null, file, null);
+        super(ioManager, file, null);
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndex.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndex.java
index 2be2184..c5bf2ca 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndex.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndex.java
@@ -63,7 +63,6 @@
 import org.apache.hyracks.storage.common.IModificationOperationCallback;
 import org.apache.hyracks.storage.common.ISearchOperationCallback;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public abstract class AbstractLSMIndex implements ILSMIndex {
     protected final ILSMHarness lsmHarness;
@@ -75,11 +74,9 @@
     protected final List<ILSMMemoryComponent> memoryComponents;
     protected final List<IVirtualBufferCache> virtualBufferCaches;
     protected AtomicInteger currentMutableComponentId;
-
     // On-disk components.
     protected final IBufferCache diskBufferCache;
     protected final ILSMIndexFileManager fileManager;
-    protected final IFileMapProvider diskFileMapProvider;
     // components with lower indexes are newer than components with higher index
     protected final List<ILSMDiskComponent> diskComponents;
     protected final List<ILSMDiskComponent> inactiveDiskComponents;
@@ -95,16 +92,14 @@
     protected boolean memoryComponentsAllocated = false;
 
     public AbstractLSMIndex(IIOManager ioManager, List<IVirtualBufferCache> virtualBufferCaches,
-            IBufferCache diskBufferCache, ILSMIndexFileManager fileManager, IFileMapProvider diskFileMapProvider,
-            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-            ILSMComponentFilterFrameFactory filterFrameFactory, LSMComponentFilterManager filterManager,
-            int[] filterFields, boolean durable, IComponentFilterHelper filterHelper,
-            int[] treeFields) {
+            IBufferCache diskBufferCache, ILSMIndexFileManager fileManager, double bloomFilterFalsePositiveRate,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, ILSMComponentFilterFrameFactory filterFrameFactory,
+            LSMComponentFilterManager filterManager, int[] filterFields, boolean durable,
+            IComponentFilterHelper filterHelper, int[] treeFields) {
         this.ioManager = ioManager;
         this.virtualBufferCaches = virtualBufferCaches;
         this.diskBufferCache = diskBufferCache;
-        this.diskFileMapProvider = diskFileMapProvider;
         this.fileManager = fileManager;
         this.bloomFilterFalsePositiveRate = bloomFilterFalsePositiveRate;
         this.ioScheduler = ioScheduler;
@@ -130,12 +125,10 @@
 
     // The constructor used by external indexes
     public AbstractLSMIndex(IIOManager ioManager, IBufferCache diskBufferCache, ILSMIndexFileManager fileManager,
-            IFileMapProvider diskFileMapProvider, double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy,
-            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-            boolean durable) {
+            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
+            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, boolean durable) {
         this.ioManager = ioManager;
         this.diskBufferCache = diskBufferCache;
-        this.diskFileMapProvider = diskFileMapProvider;
         this.fileManager = fileManager;
         this.bloomFilterFalsePositiveRate = bloomFilterFalsePositiveRate;
         this.ioScheduler = ioScheduler;
@@ -162,7 +155,6 @@
         if (isActive) {
             throw HyracksDataException.create(ErrorCode.CANNOT_CREATE_ACTIVE_INDEX);
         }
-        fileManager.deleteDirs();
         fileManager.createDirs();
         diskComponents.clear();
     }
@@ -238,16 +230,9 @@
             throw HyracksDataException.create(ErrorCode.CANNOT_DESTROY_ACTIVE_INDEX);
         }
         destroyDiskComponents();
-        destroyMemoryComponents();
         fileManager.deleteDirs();
     }
 
-    protected void destroyMemoryComponents() throws HyracksDataException {
-        for (ILSMMemoryComponent c : memoryComponents) {
-            destroyMemoryComponent(c);
-        }
-    }
-
     protected void destroyDiskComponents() throws HyracksDataException {
         List<ILSMDiskComponent> immutableComponents = diskComponents;
         for (ILSMDiskComponent c : immutableComponents) {
@@ -653,8 +638,6 @@
 
     protected abstract void destroyDiskComponent(ILSMDiskComponent c) throws HyracksDataException;
 
-    protected abstract void destroyMemoryComponent(ILSMMemoryComponent c) throws HyracksDataException;
-
     protected abstract void clearDiskComponent(ILSMDiskComponent c) throws HyracksDataException;
 
     protected abstract void clearMemoryComponent(ILSMMemoryComponent c) throws HyracksDataException;
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndexFileManager.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndexFileManager.java
index fca010f..ead9db4 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndexFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndexFileManager.java
@@ -33,11 +33,11 @@
 import java.util.HashSet;
 import java.util.List;
 
-import org.apache.commons.io.FileUtils;
 import org.apache.hyracks.api.exceptions.ErrorCode;
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
 import org.apache.hyracks.api.io.IIOManager;
+import org.apache.hyracks.api.util.IoUtil;
 import org.apache.hyracks.storage.am.common.api.ITreeIndex;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexFrame;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexMetadataFrame;
@@ -45,49 +45,63 @@
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public abstract class AbstractLSMIndexFileManager implements ILSMIndexFileManager {
 
-    public static final String SPLIT_STRING = "_";
-    protected static final String BLOOM_FILTER_STRING = "f";
-    protected static final String TRANSACTION_PREFIX = ".T";
-
     public enum TreeIndexState {
         INVALID,
         VERSION_MISMATCH,
         VALID
     }
 
+    /**
+     * Split different parts of the file name
+     */
+    public static final String DELIMITER = "_";
+    /**
+     * Indicates a B tree
+     */
+    public static final String BTREE_SUFFIX = "b";
+    /**
+     * Indicates an R tree
+     */
+    public static final String RTREE_SUFFIX = "r";
+    /**
+     * Indicates a bloom filter
+     */
+    public static final String BLOOM_FILTER_SUFFIX = "f";
+    /**
+     * Indicates a delete tree
+     */
+    public static final String DELETE_TREE_SUFFIX = "d";
+    /**
+     * Hides transaction components until they are either committed by removing this file or deleted along with the file
+     */
+    public static final String TXN_PREFIX = ".T";
+
+    protected static final FilenameFilter fileNameFilter = (dir, name) -> !name.startsWith(".");
+    protected static final FilenameFilter txnFileNameFilter = (dir, name) -> name.startsWith(TXN_PREFIX);
+    protected static FilenameFilter bloomFilterFilter =
+            (dir, name) -> !name.startsWith(".") && name.endsWith(BLOOM_FILTER_SUFFIX);
+    protected static final FilenameFilter dummyFilter = (dir, name) -> true;
+    protected static final Comparator<String> cmp = new FileNameComparator();
+
     protected final IIOManager ioManager;
-    protected final IFileMapProvider fileMapProvider;
     // baseDir should reflect dataset name and partition name and be absolute
-    protected String baseDir;
+    protected final String baseDir;
     protected final Format formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss-SSS");
-    protected final Comparator<String> cmp = new FileNameComparator();
     protected final Comparator<ComparableFileName> recencyCmp = new RecencyComparator();
     protected final TreeIndexFactory<? extends ITreeIndex> treeFactory;
-
     private String prevTimestamp = null;
 
-    public AbstractLSMIndexFileManager(IIOManager ioManager, IFileMapProvider fileMapProvider, FileReference file,
+    public AbstractLSMIndexFileManager(IIOManager ioManager, FileReference file,
             TreeIndexFactory<? extends ITreeIndex> treeFactory) {
         this.ioManager = ioManager;
-        this.baseDir = file.getFile().getAbsolutePath();
-        if (!baseDir.endsWith(System.getProperty("file.separator"))) {
-            baseDir += System.getProperty("file.separator");
-        }
-        this.fileMapProvider = fileMapProvider;
+        this.baseDir = file.getFile().getAbsolutePath().endsWith(File.separator) ? file.getFile().getAbsolutePath()
+                : file.getFile().getAbsolutePath() + File.separator;
         this.treeFactory = treeFactory;
     }
 
-    private static FilenameFilter fileNameFilter = new FilenameFilter() {
-        @Override
-        public boolean accept(File dir, String name) {
-            return !name.startsWith(".");
-        }
-    };
-
     protected TreeIndexState isValidTreeIndex(ITreeIndex treeIndex) throws HyracksDataException {
         IBufferCache bufferCache = treeIndex.getBufferCache();
         treeIndex.activate();
@@ -148,7 +162,7 @@
             if (!dir.canRead()) {
                 throw HyracksDataException.create(ErrorCode.CANNOT_READ_FILE, path);
             } else if (!dir.exists()) {
-                throw HyracksDataException.create(ErrorCode.FILE_DOES_NOT_EXISTS, path);
+                throw HyracksDataException.create(ErrorCode.FILE_DOES_NOT_EXIST, path);
             } else if (!dir.isDirectory()) {
                 throw HyracksDataException.create(ErrorCode.FILE_IS_NOT_DIRECTORY, path);
             }
@@ -162,44 +176,31 @@
         ArrayList<ComparableFileName> tmpAllInvListsFiles = new ArrayList<>();
         cleanupAndGetValidFilesInternal(filter, treeFactory, tmpAllInvListsFiles);
         for (ComparableFileName cmpFileName : tmpAllInvListsFiles) {
-            int index = cmpFileName.fileName.lastIndexOf(SPLIT_STRING);
+            int index = cmpFileName.fileName.lastIndexOf(DELIMITER);
             String file = cmpFileName.fileName.substring(0, index);
             if (groundTruth.contains(file)) {
                 validFiles.add(cmpFileName);
             } else {
                 File invalidFile = new File(cmpFileName.fullPath);
-                invalidFile.delete();
+                IoUtil.delete(invalidFile);
             }
         }
     }
 
     @Override
-    public void createDirs() {
+    public void createDirs() throws HyracksDataException {
         File f = new File(baseDir);
+        if (f.exists()) {
+            throw HyracksDataException.create(ErrorCode.CANNOT_CREATE_EXISTING_INDEX);
+        }
         f.mkdirs();
     }
 
     @Override
     public void deleteDirs() throws HyracksDataException {
-        File f = new File(baseDir);
-        if (f.exists()) {
-            delete(f);
-        }
+        IoUtil.delete(new File(baseDir));
     }
 
-    private void delete(File f) throws HyracksDataException {
-        if (!FileUtils.deleteQuietly(f)) {
-            throw HyracksDataException.create(ErrorCode.UNIDENTIFIED_IO_ERROR_DELETING_DIR, f.getPath());
-        }
-    }
-
-    protected static FilenameFilter bloomFilterFilter = new FilenameFilter() {
-        @Override
-        public boolean accept(File dir, String name) {
-            return !name.startsWith(".") && name.endsWith(BLOOM_FILTER_STRING);
-        }
-    };
-
     protected FileReference createFlushFile(String flushFileName) throws HyracksDataException {
         return ioManager.resolveAbsolutePath(flushFileName);
     }
@@ -212,17 +213,17 @@
     public LSMComponentFileReferences getRelFlushFileReference() throws HyracksDataException {
         String ts = getCurrentTimestamp();
         // Begin timestamp and end timestamp are identical since it is a flush
-        return new LSMComponentFileReferences(createFlushFile(baseDir + ts + SPLIT_STRING + ts), null, null);
+        return new LSMComponentFileReferences(createFlushFile(baseDir + ts + DELIMITER + ts), null, null);
     }
 
     @Override
     public LSMComponentFileReferences getRelMergeFileReference(String firstFileName, String lastFileName)
             throws HyracksDataException {
-        String[] firstTimestampRange = firstFileName.split(SPLIT_STRING);
-        String[] lastTimestampRange = lastFileName.split(SPLIT_STRING);
+        String[] firstTimestampRange = firstFileName.split(DELIMITER);
+        String[] lastTimestampRange = lastFileName.split(DELIMITER);
         // Get the range of timestamps by taking the earliest and the latest timestamps
         return new LSMComponentFileReferences(
-                createMergeFile(baseDir + firstTimestampRange[0] + SPLIT_STRING + lastTimestampRange[1]), null, null);
+                createMergeFile(baseDir + firstTimestampRange[0] + DELIMITER + lastTimestampRange[1]), null, null);
     }
 
     @Override
@@ -292,7 +293,7 @@
      * 2. Flushed files are sorted from newest to oldest (based on the timestamp
      * string)
      */
-    private class FileNameComparator implements Comparator<String> {
+    private static class FileNameComparator implements Comparator<String> {
         @Override
         public int compare(String a, String b) {
             // Consciously ignoring locale.
@@ -307,7 +308,7 @@
 
     @Override
     public void recoverTransaction() throws HyracksDataException {
-        String[] files = listDirFiles(baseDir, transactionFileNameFilter);
+        String[] files = listDirFiles(baseDir, txnFileNameFilter);
         File dir = new File(baseDir);
         try {
             if (files.length == 0) {
@@ -334,7 +335,7 @@
             this.fileRef = fileRef;
             this.fullPath = fileRef.getFile().getAbsolutePath();
             this.fileName = fileRef.getFile().getName();
-            interval = fileName.split(SPLIT_STRING);
+            interval = fileName.split(DELIMITER);
         }
 
         @Override
@@ -361,7 +362,7 @@
     // This function is used to delete transaction files for aborted transactions
     @Override
     public void deleteTransactionFiles() throws HyracksDataException {
-        String[] files = listDirFiles(baseDir, transactionFileNameFilter);
+        String[] files = listDirFiles(baseDir, txnFileNameFilter);
         if (files.length == 0) {
             // Do nothing
         } else if (files.length > 1) {
@@ -399,23 +400,9 @@
         return null;
     }
 
-    protected static FilenameFilter transactionFileNameFilter = new FilenameFilter() {
-        @Override
-        public boolean accept(File dir, String name) {
-            return name.startsWith(".T");
-        }
-    };
-
-    protected static FilenameFilter dummyFilter = new FilenameFilter() {
-        @Override
-        public boolean accept(File dir, String name) {
-            return true;
-        }
-    };
-
     protected static FilenameFilter createTransactionFilter(String transactionFileName, final boolean inclusive) {
-        final String timeStamp = transactionFileName
-                .substring(transactionFileName.indexOf(TRANSACTION_PREFIX) + TRANSACTION_PREFIX.length());
+        final String timeStamp =
+                transactionFileName.substring(transactionFileName.indexOf(TXN_PREFIX) + TXN_PREFIX.length());
         return new FilenameFilter() {
             @Override
             public boolean accept(File dir, String name) {
@@ -429,7 +416,7 @@
     }
 
     protected FilenameFilter getTransactionFileFilter(boolean inclusive) throws HyracksDataException {
-        String[] files = listDirFiles(baseDir, transactionFileNameFilter);
+        String[] files = listDirFiles(baseDir, txnFileNameFilter);
         if (files.length == 0) {
             return dummyFilter;
         } else {
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/BTreeFactory.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/BTreeFactory.java
index 562ed5a..4eefcd8 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/BTreeFactory.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/BTreeFactory.java
@@ -26,21 +26,20 @@
 import org.apache.hyracks.storage.am.common.api.IPageManagerFactory;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexFrameFactory;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class BTreeFactory extends TreeIndexFactory<BTree> {
 
-    public BTreeFactory(IIOManager ioManager, IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            IPageManagerFactory freePageManagerFactory, ITreeIndexFrameFactory interiorFrameFactory,
-            ITreeIndexFrameFactory leafFrameFactory, IBinaryComparatorFactory[] cmpFactories, int fieldCount) {
-        super(ioManager, bufferCache, fileMapProvider, freePageManagerFactory, interiorFrameFactory, leafFrameFactory,
-                cmpFactories, fieldCount);
+    public BTreeFactory(IIOManager ioManager, IBufferCache bufferCache, IPageManagerFactory freePageManagerFactory,
+            ITreeIndexFrameFactory interiorFrameFactory, ITreeIndexFrameFactory leafFrameFactory,
+            IBinaryComparatorFactory[] cmpFactories, int fieldCount) {
+        super(ioManager, bufferCache, freePageManagerFactory, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                fieldCount);
     }
 
     @Override
     public BTree createIndexInstance(FileReference file) {
-        return new BTree(bufferCache, fileMapProvider, freePageManagerFactory.createPageManager(bufferCache),
-                interiorFrameFactory, leafFrameFactory, cmpFactories, fieldCount, file);
+        return new BTree(bufferCache, freePageManagerFactory.createPageManager(bufferCache), interiorFrameFactory,
+                leafFrameFactory, cmpFactories, fieldCount, file);
     }
 
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/IndexFactory.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/IndexFactory.java
index 55fc92c..7a05d6d 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/IndexFactory.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/IndexFactory.java
@@ -25,20 +25,16 @@
 import org.apache.hyracks.storage.am.common.api.IPageManagerFactory;
 import org.apache.hyracks.storage.common.IIndex;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public abstract class IndexFactory<T extends IIndex> {
 
     protected final IIOManager ioManager;
     protected final IBufferCache bufferCache;
-    protected final IFileMapProvider fileMapProvider;
     protected final IPageManagerFactory freePageManagerFactory;
 
-    public IndexFactory(IIOManager ioManager, IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            IPageManagerFactory freePageManagerFactory) {
+    public IndexFactory(IIOManager ioManager, IBufferCache bufferCache, IPageManagerFactory freePageManagerFactory) {
         this.ioManager = ioManager;
         this.bufferCache = bufferCache;
-        this.fileMapProvider = fileMapProvider;
         this.freePageManagerFactory = freePageManagerFactory;
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/MultitenantVirtualBufferCache.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/MultitenantVirtualBufferCache.java
index 6878fcf..83e140c 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/MultitenantVirtualBufferCache.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/MultitenantVirtualBufferCache.java
@@ -18,6 +18,8 @@
  */
 package org.apache.hyracks.storage.am.lsm.common.impls;
 
+import java.util.HashMap;
+import java.util.Map;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -29,6 +31,7 @@
 import org.apache.hyracks.storage.common.buffercache.IExtraPageBlockHelper;
 import org.apache.hyracks.storage.common.buffercache.IFIFOPageQueue;
 import org.apache.hyracks.storage.common.file.IFileMapManager;
+import org.apache.hyracks.util.JSONUtil;
 
 public class MultitenantVirtualBufferCache implements IVirtualBufferCache {
     private static final Logger LOGGER = Logger.getLogger(ExternalIndexHarness.class.getName());
@@ -42,8 +45,8 @@
     }
 
     @Override
-    public void createFile(FileReference fileRef) throws HyracksDataException {
-        vbc.createFile(fileRef);
+    public int createFile(FileReference fileRef) throws HyracksDataException {
+        return vbc.createFile(fileRef);
     }
 
     @Override
@@ -57,8 +60,8 @@
     }
 
     @Override
-    public void deleteFile(int fileId, boolean flushDirtyPages) throws HyracksDataException {
-        vbc.deleteFile(fileId, flushDirtyPages);
+    public void deleteFile(int fileId) throws HyracksDataException {
+        vbc.deleteFile(fileId);
     }
 
     @Override
@@ -91,6 +94,7 @@
         return vbc.getPageSize();
     }
 
+    @Override
     public int getPageSizeWithHeader() {
         return vbc.getPageSizeWithHeader();
     }
@@ -133,7 +137,7 @@
 
     @Override
     public int getNumPagesOfFile(int fileId) throws HyracksDataException {
-        throw new UnsupportedOperationException();
+        return vbc.getNumPagesOfFile(fileId);
     }
 
     @Override
@@ -205,4 +209,28 @@
             throws HyracksDataException {
         vbc.resizePage(page, multiplier, extraPageBlockHelper);
     }
+
+    @Override
+    public String toString() {
+        return JSONUtil.fromMap(toMap());
+    }
+
+    private Map<String, Object> toMap() {
+        HashMap<String, Object> map = new HashMap<>();
+        map.put("class", getClass().getSimpleName());
+        map.put("vbc", vbc.toString());
+        map.put("openCount", openCount);
+        return map;
+    }
+
+    @Override
+    public int openFile(FileReference fileRef) throws HyracksDataException {
+        return vbc.openFile(fileRef);
+    }
+
+    @Override
+    public void deleteFile(FileReference file) throws HyracksDataException {
+        vbc.deleteFile(file);
+    }
+
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/TreeIndexFactory.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/TreeIndexFactory.java
index 2a7bcca..b6e2dd4 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/TreeIndexFactory.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/TreeIndexFactory.java
@@ -25,7 +25,6 @@
 import org.apache.hyracks.storage.am.common.api.ITreeIndex;
 import org.apache.hyracks.storage.am.common.api.ITreeIndexFrameFactory;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public abstract class TreeIndexFactory<T extends ITreeIndex> extends IndexFactory<T> {
 
@@ -34,10 +33,10 @@
     protected final IBinaryComparatorFactory[] cmpFactories;
     protected final int fieldCount;
 
-    public TreeIndexFactory(IIOManager ioManager, IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            IPageManagerFactory freePageManagerFactory, ITreeIndexFrameFactory interiorFrameFactory,
-            ITreeIndexFrameFactory leafFrameFactory, IBinaryComparatorFactory[] cmpFactories, int fieldCount) {
-        super(ioManager, bufferCache, fileMapProvider, freePageManagerFactory);
+    public TreeIndexFactory(IIOManager ioManager, IBufferCache bufferCache, IPageManagerFactory freePageManagerFactory,
+            ITreeIndexFrameFactory interiorFrameFactory, ITreeIndexFrameFactory leafFrameFactory,
+            IBinaryComparatorFactory[] cmpFactories, int fieldCount) {
+        super(ioManager, bufferCache, freePageManagerFactory);
         this.interiorFrameFactory = interiorFrameFactory;
         this.leafFrameFactory = leafFrameFactory;
         this.cmpFactories = cmpFactories;
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/VirtualBufferCache.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/VirtualBufferCache.java
index 27d879c..d26677e 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/VirtualBufferCache.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/VirtualBufferCache.java
@@ -21,6 +21,8 @@
 import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.logging.Level;
@@ -37,7 +39,8 @@
 import org.apache.hyracks.storage.common.buffercache.VirtualPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
 import org.apache.hyracks.storage.common.file.IFileMapManager;
-import org.apache.hyracks.storage.common.file.TransientFileMapManager;
+import org.apache.hyracks.storage.common.file.FileMapManager;
+import org.apache.hyracks.util.JSONUtil;
 
 public class VirtualBufferCache implements IVirtualBufferCache {
     private static final Logger LOGGER = Logger.getLogger(ExternalIndexHarness.class.getName());
@@ -59,7 +62,7 @@
 
     public VirtualBufferCache(ICacheMemoryAllocator allocator, int pageSize, int numPages) {
         this.allocator = allocator;
-        this.fileMapManager = new TransientFileMapManager();
+        this.fileMapManager = new FileMapManager();
         this.pageSize = pageSize;
         this.numPages = 2 * (numPages / 2) + 1;
 
@@ -71,12 +74,17 @@
     }
 
     @Override
-    public void createFile(FileReference fileRef) throws HyracksDataException {
+    public int createFile(FileReference fileRef) throws HyracksDataException {
+        return fileMapManager.registerFile(fileRef);
+    }
+
+    @Override
+    public int openFile(FileReference fileRef) throws HyracksDataException {
         synchronized (fileMapManager) {
             if (fileMapManager.isMapped(fileRef)) {
-                throw new HyracksDataException("File " + fileRef + " is already mapped");
+                return fileMapManager.lookupFileId(fileRef);
             }
-            fileMapManager.registerFile(fileRef);
+            return fileMapManager.registerFile(fileRef);
         }
     }
 
@@ -89,14 +97,16 @@
     }
 
     @Override
-    public void deleteFile(int fileId, boolean flushDirtyPages) throws HyracksDataException {
+    public void deleteFile(FileReference fileRef) throws HyracksDataException {
         synchronized (fileMapManager) {
-            if (!fileMapManager.isMapped(fileId)) {
-                throw new HyracksDataException("File with id " + fileId + " is not mapped");
-            }
-            fileMapManager.unregisterFile(fileId);
+            int fileId = fileMapManager.lookupFileId(fileRef);
+            deleteFile(fileId);
         }
+    }
 
+    @Override
+    public void deleteFile(int fileId) throws HyracksDataException {
+        fileMapManager.unregisterFile(fileId);
         for (int i = 0; i < buckets.length; i++) {
             final CacheBucket bucket = buckets[i];
             bucket.bucketLock.lock();
@@ -355,12 +365,7 @@
 
     @Override
     public int getNumPagesOfFile(int fileId) throws HyracksDataException {
-        synchronized (fileMapManager) {
-            if (fileMapManager.isMapped(fileId)) {
-                return numPages;
-            }
-        }
-        return 0;
+        return -1;
     }
 
     @Override
@@ -424,7 +429,21 @@
 
     @Override
     public void purgeHandle(int fileId) throws HyracksDataException {
-
+        deleteFile(fileId);
     }
 
+    @Override
+    public String toString() {
+        return JSONUtil.fromMap(toMap());
+    }
+
+    private Map<String, Object> toMap() {
+        HashMap<String, Object> map = new HashMap<>();
+        map.put("class", getClass().getSimpleName());
+        map.put("allocator", allocator.toString());
+        map.put("pageSize", pageSize);
+        map.put("numPages", numPages);
+        map.put("open", open);
+        return map;
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/pom.xml b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/pom.xml
index 0f4063a..b94ebee 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/pom.xml
@@ -16,7 +16,8 @@
  ! specific language governing permissions and limitations
  ! under the License.
  !-->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <artifactId>hyracks-storage-am-lsm-invertedindex</artifactId>
   <parent>
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/api/IInvertedIndex.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/api/IInvertedIndex.java
index 7258076..eceb7b4 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/api/IInvertedIndex.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/api/IInvertedIndex.java
@@ -39,4 +39,13 @@
     ITypeTraits[] getTokenTypeTraits();
 
     IBinaryComparatorFactory[] getTokenCmpFactories();
+
+    /**
+     * Purge the index files out of the buffer cache.
+     * Can only be called if the caller is absolutely sure the files don't contain dirty pages
+     *
+     * @throws HyracksDataException
+     *             if the index is active
+     */
+    void purge() throws HyracksDataException;
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/dataflow/LSMInvertedIndexLocalResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/dataflow/LSMInvertedIndexLocalResource.java
index 45ca106..7e2ec50 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/dataflow/LSMInvertedIndexLocalResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/dataflow/LSMInvertedIndexLocalResource.java
@@ -42,7 +42,6 @@
 import org.apache.hyracks.storage.am.lsm.invertedindex.util.InvertedIndexUtils;
 import org.apache.hyracks.storage.common.IStorageManager;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMInvertedIndexLocalResource extends LsmResource {
 
@@ -86,25 +85,23 @@
         FileReference file = ioManager.resolve(path);
         List<IVirtualBufferCache> virtualBufferCaches = vbcProvider.getVirtualBufferCaches(serviceCtx, file);
         IBufferCache bufferCache = storageManager.getBufferCache(serviceCtx);
-        IFileMapProvider fileMapManager = storageManager.getFileMapProvider(serviceCtx);
         ILSMMergePolicy mergePolicy = mergePolicyFactory.createMergePolicy(mergePolicyProperties, serviceCtx);
         ILSMIOOperationScheduler ioScheduler = ioSchedulerProvider.getIoScheduler(serviceCtx);
         if (isPartitioned) {
-            return InvertedIndexUtils.createPartitionedLSMInvertedIndex(ioManager, virtualBufferCaches, fileMapManager,
-                    typeTraits, cmpFactories, tokenTypeTraits, tokenCmpFactories, tokenizerFactory, bufferCache,
-                    file.getAbsolutePath(), bloomFilterFalsePositiveRate, mergePolicy,
-                    opTrackerProvider.getOperationTracker(serviceCtx), ioScheduler,
-                    ioOpCallbackFactory.createIoOpCallback(), invertedIndexFields, filterTypeTraits, filterCmpFactories,
-                    filterFields, filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, durable,
-                    metadataPageManagerFactory);
-        } else {
-            return InvertedIndexUtils.createLSMInvertedIndex(ioManager, virtualBufferCaches, fileMapManager, typeTraits,
+            return InvertedIndexUtils.createPartitionedLSMInvertedIndex(ioManager, virtualBufferCaches, typeTraits,
                     cmpFactories, tokenTypeTraits, tokenCmpFactories, tokenizerFactory, bufferCache,
                     file.getAbsolutePath(), bloomFilterFalsePositiveRate, mergePolicy,
                     opTrackerProvider.getOperationTracker(serviceCtx), ioScheduler,
                     ioOpCallbackFactory.createIoOpCallback(), invertedIndexFields, filterTypeTraits, filterCmpFactories,
                     filterFields, filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, durable,
                     metadataPageManagerFactory);
+        } else {
+            return InvertedIndexUtils.createLSMInvertedIndex(ioManager, virtualBufferCaches, typeTraits, cmpFactories,
+                    tokenTypeTraits, tokenCmpFactories, tokenizerFactory, bufferCache, file.getAbsolutePath(),
+                    bloomFilterFalsePositiveRate, mergePolicy, opTrackerProvider.getOperationTracker(serviceCtx),
+                    ioScheduler, ioOpCallbackFactory.createIoOpCallback(), invertedIndexFields, filterTypeTraits,
+                    filterCmpFactories, filterFields, filterFieldsForNonBulkLoadOps,
+                    invertedIndexFieldsForNonBulkLoadOps, durable, metadataPageManagerFactory);
         }
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/LSMInvertedIndex.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/LSMInvertedIndex.java
index d5edbb5..f3f2ff0 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/LSMInvertedIndex.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/LSMInvertedIndex.java
@@ -87,7 +87,6 @@
 import org.apache.hyracks.storage.common.ISearchPredicate;
 import org.apache.hyracks.storage.common.MultiComparator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMInvertedIndex extends AbstractLSMIndex implements IInvertedIndex {
     private static final Logger LOGGER = Logger.getLogger(LSMInvertedIndex.class.getName());
@@ -110,14 +109,14 @@
             OnDiskInvertedIndexFactory diskInvIndexFactory, BTreeFactory deletedKeysBTreeFactory,
             BloomFilterFactory bloomFilterFactory, IComponentFilterHelper filterHelper,
             ILSMComponentFilterFrameFactory filterFrameFactory, LSMComponentFilterManager filterManager,
-            double bloomFilterFalsePositiveRate, ILSMIndexFileManager fileManager, IFileMapProvider diskFileMapProvider,
-            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
-            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories,
-            IBinaryTokenizerFactory tokenizerFactory, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, int[] invertedIndexFields,
-            int[] filterFields, int[] filterFieldsForNonBulkLoadOps, int[] invertedIndexFieldsForNonBulkLoadOps,
-            boolean durable) throws HyracksDataException {
-        super(ioManager, virtualBufferCaches, diskInvIndexFactory.getBufferCache(), fileManager, diskFileMapProvider,
+            double bloomFilterFalsePositiveRate, ILSMIndexFileManager fileManager, ITypeTraits[] invListTypeTraits,
+            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
+            IBinaryComparatorFactory[] tokenCmpFactories, IBinaryTokenizerFactory tokenizerFactory,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, int[] invertedIndexFields, int[] filterFields,
+            int[] filterFieldsForNonBulkLoadOps, int[] invertedIndexFieldsForNonBulkLoadOps, boolean durable)
+            throws HyracksDataException {
+        super(ioManager, virtualBufferCaches, diskInvIndexFactory.getBufferCache(), fileManager,
                 bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback, filterFrameFactory,
                 filterManager, filterFields, durable, filterHelper, invertedIndexFields);
         this.tokenizerFactory = tokenizerFactory;
@@ -134,10 +133,10 @@
         for (IVirtualBufferCache virtualBufferCache : virtualBufferCaches) {
             InMemoryInvertedIndex memInvIndex =
                     createInMemoryInvertedIndex(virtualBufferCache, new VirtualFreePageManager(virtualBufferCache), i);
-            BTree deleteKeysBTree = BTreeUtils.createBTree(virtualBufferCache,
-                    new VirtualFreePageManager(virtualBufferCache), virtualBufferCache.getFileMapProvider(),
-                    invListTypeTraits, invListCmpFactories, BTreeLeafFrameType.REGULAR_NSM,
-                    ioManager.resolveAbsolutePath(fileManager.getBaseDir() + "_virtual_del_" + i));
+            BTree deleteKeysBTree =
+                    BTreeUtils.createBTree(virtualBufferCache, new VirtualFreePageManager(virtualBufferCache),
+                            invListTypeTraits, invListCmpFactories, BTreeLeafFrameType.REGULAR_NSM,
+                            ioManager.resolveAbsolutePath(fileManager.getBaseDir() + "_virtual_del_" + i));
             LSMInvertedIndexMemoryComponent mutableComponent =
                     new LSMInvertedIndexMemoryComponent(memInvIndex, deleteKeysBTree, virtualBufferCache,
                             i == 0 ? true : false, filterHelper == null ? null : filterHelper.createFilter());
@@ -177,8 +176,11 @@
     protected void deactivateDiskComponent(ILSMDiskComponent c) throws HyracksDataException {
         LSMInvertedIndexDiskComponent component = (LSMInvertedIndexDiskComponent) c;
         component.getBloomFilter().deactivate();
+        component.getBloomFilter().purge();
         component.getInvIndex().deactivate();
+        component.getInvIndex().purge();
         component.getDeletedKeysBTree().deactivate();
+        component.getDeletedKeysBTree().purge();
     }
 
     @Override
@@ -189,13 +191,6 @@
         component.getBloomFilter().destroy();
     }
 
-    @Override
-    protected void destroyMemoryComponent(ILSMMemoryComponent c) throws HyracksDataException {
-        LSMInvertedIndexMemoryComponent mutableComponent = (LSMInvertedIndexMemoryComponent) c;
-        mutableComponent.getInvIndex().destroy();
-        mutableComponent.getDeletedKeysBTree().destroy();
-    }
-
     /**
      * The keys in the in-memory deleted-keys BTree only refer to on-disk components.
      * We delete documents from the in-memory inverted index by deleting its entries directly,
@@ -741,4 +736,9 @@
                 mergeFileRefs.getInsertIndexFileReference(), mergeFileRefs.getDeleteIndexFileReference(),
                 mergeFileRefs.getBloomFilterFileReference(), callback, fileManager.getBaseDir());
     }
+
+    @Override
+    public void purge() throws HyracksDataException {
+        throw new UnsupportedOperationException();
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/LSMInvertedIndexFileManager.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/LSMInvertedIndexFileManager.java
index aeb1e16..9254c45 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/LSMInvertedIndexFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/LSMInvertedIndexFileManager.java
@@ -34,7 +34,6 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.BTreeFactory;
 import org.apache.hyracks.storage.am.lsm.common.impls.LSMComponentFileReferences;
 import org.apache.hyracks.storage.am.lsm.invertedindex.api.IInvertedIndexFileNameMapper;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 // TODO: Refactor for better code sharing with other file managers.
 public class LSMInvertedIndexFileManager extends AbstractLSMIndexFileManager implements IInvertedIndexFileNameMapper {
@@ -66,33 +65,32 @@
         }
     };
 
-    public LSMInvertedIndexFileManager(IIOManager ioManager, IFileMapProvider fileMapProvider, FileReference file,
-            BTreeFactory btreeFactory) {
-        super(ioManager, fileMapProvider, file, null);
+    public LSMInvertedIndexFileManager(IIOManager ioManager, FileReference file, BTreeFactory btreeFactory) {
+        super(ioManager, file, null);
         this.btreeFactory = btreeFactory;
     }
 
     @Override
     public LSMComponentFileReferences getRelFlushFileReference() throws HyracksDataException {
         String ts = getCurrentTimestamp();
-        String baseName = baseDir + ts + SPLIT_STRING + ts;
+        String baseName = baseDir + ts + DELIMITER + ts;
         // Begin timestamp and end timestamp are identical since it is a flush
-        return new LSMComponentFileReferences(createFlushFile(baseName + SPLIT_STRING + DICT_BTREE_SUFFIX),
-                createFlushFile(baseName + SPLIT_STRING + DELETED_KEYS_BTREE_SUFFIX),
-                createFlushFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        return new LSMComponentFileReferences(createFlushFile(baseName + DELIMITER + DICT_BTREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + DELETED_KEYS_BTREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
     public LSMComponentFileReferences getRelMergeFileReference(String firstFileName, String lastFileName)
             throws HyracksDataException {
-        String[] firstTimestampRange = firstFileName.split(SPLIT_STRING);
-        String[] lastTimestampRange = lastFileName.split(SPLIT_STRING);
+        String[] firstTimestampRange = firstFileName.split(DELIMITER);
+        String[] lastTimestampRange = lastFileName.split(DELIMITER);
 
-        String baseName = baseDir + firstTimestampRange[0] + SPLIT_STRING + lastTimestampRange[1];
+        String baseName = baseDir + firstTimestampRange[0] + DELIMITER + lastTimestampRange[1];
         // Get the range of timestamps by taking the earliest and the latest timestamps
-        return new LSMComponentFileReferences(createMergeFile(baseName + SPLIT_STRING + DICT_BTREE_SUFFIX),
-                createMergeFile(baseName + SPLIT_STRING + DELETED_KEYS_BTREE_SUFFIX),
-                createMergeFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        return new LSMComponentFileReferences(createMergeFile(baseName + DELIMITER + DICT_BTREE_SUFFIX),
+                createMergeFile(baseName + DELIMITER + DELETED_KEYS_BTREE_SUFFIX),
+                createMergeFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
@@ -107,7 +105,7 @@
         cleanupAndGetValidFilesInternal(deletedKeysBTreeFilter, btreeFactory, allDeletedKeysBTreeFiles);
         HashSet<String> deletedKeysBTreeFilesSet = new HashSet<>();
         for (ComparableFileName cmpFileName : allDeletedKeysBTreeFiles) {
-            int index = cmpFileName.fileName.lastIndexOf(SPLIT_STRING);
+            int index = cmpFileName.fileName.lastIndexOf(DELIMITER);
             deletedKeysBTreeFilesSet.add(cmpFileName.fileName.substring(0, index));
         }
 
@@ -210,8 +208,8 @@
 
     @Override
     public String getInvListsFilePath(String dictBTreeFilePath) {
-        int index = dictBTreeFilePath.lastIndexOf(SPLIT_STRING);
+        int index = dictBTreeFilePath.lastIndexOf(DELIMITER);
         String file = dictBTreeFilePath.substring(0, index);
-        return file + SPLIT_STRING + INVLISTS_SUFFIX;
+        return file + DELIMITER + INVLISTS_SUFFIX;
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/PartitionedLSMInvertedIndex.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/PartitionedLSMInvertedIndex.java
index 8863427..d154356 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/PartitionedLSMInvertedIndex.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/impls/PartitionedLSMInvertedIndex.java
@@ -41,7 +41,6 @@
 import org.apache.hyracks.storage.am.lsm.invertedindex.ondisk.OnDiskInvertedIndexFactory;
 import org.apache.hyracks.storage.am.lsm.invertedindex.tokenizers.IBinaryTokenizerFactory;
 import org.apache.hyracks.storage.am.lsm.invertedindex.util.InvertedIndexUtils;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class PartitionedLSMInvertedIndex extends LSMInvertedIndex {
 
@@ -49,17 +48,17 @@
             OnDiskInvertedIndexFactory diskInvIndexFactory, BTreeFactory deletedKeysBTreeFactory,
             BloomFilterFactory bloomFilterFactory, IComponentFilterHelper filterHelper,
             ILSMComponentFilterFrameFactory filterFrameFactory, LSMComponentFilterManager filterManager,
-            double bloomFilterFalsePositiveRate, ILSMIndexFileManager fileManager, IFileMapProvider diskFileMapProvider,
-            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
-            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories,
-            IBinaryTokenizerFactory tokenizerFactory, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, int[] invertedIndexFields,
-            int[] filterFields, int[] filterFieldsForNonBulkLoadOps, int[] invertedIndexFieldsForNonBulkLoadOps,
-            boolean durable) throws HyracksDataException {
+            double bloomFilterFalsePositiveRate, ILSMIndexFileManager fileManager, ITypeTraits[] invListTypeTraits,
+            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
+            IBinaryComparatorFactory[] tokenCmpFactories, IBinaryTokenizerFactory tokenizerFactory,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, int[] invertedIndexFields, int[] filterFields,
+            int[] filterFieldsForNonBulkLoadOps, int[] invertedIndexFieldsForNonBulkLoadOps, boolean durable)
+            throws HyracksDataException {
         super(ioManager, virtualBufferCaches, diskInvIndexFactory, deletedKeysBTreeFactory, bloomFilterFactory,
                 filterHelper, filterFrameFactory, filterManager, bloomFilterFalsePositiveRate, fileManager,
-                diskFileMapProvider, invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories,
-                tokenizerFactory, mergePolicy, opTracker, ioScheduler, ioOpCallback, invertedIndexFields, filterFields,
+                invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories, tokenizerFactory,
+                mergePolicy, opTracker, ioScheduler, ioOpCallback, invertedIndexFields, filterFields,
                 filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, durable);
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/inmemory/InMemoryInvertedIndex.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/inmemory/InMemoryInvertedIndex.java
index 4b673e5..d686634 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/inmemory/InMemoryInvertedIndex.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/inmemory/InMemoryInvertedIndex.java
@@ -31,7 +31,6 @@
 import org.apache.hyracks.storage.am.common.api.IIndexOperationContext;
 import org.apache.hyracks.storage.am.common.api.IPageManager;
 import org.apache.hyracks.storage.am.common.ophelpers.IndexOperation;
-import org.apache.hyracks.storage.am.lsm.common.api.IVirtualBufferCache;
 import org.apache.hyracks.storage.am.lsm.invertedindex.api.IInvertedIndex;
 import org.apache.hyracks.storage.am.lsm.invertedindex.api.IInvertedListCursor;
 import org.apache.hyracks.storage.am.lsm.invertedindex.tokenizers.IBinaryTokenizerFactory;
@@ -74,9 +73,8 @@
             btreeTypeTraits[tokenTypeTraits.length + i] = invListTypeTraits[i];
             btreeCmpFactories[tokenTypeTraits.length + i] = invListCmpFactories[i];
         }
-        this.btree = BTreeUtils.createBTree(virtualBufferCache, virtualFreePageManager,
-                ((IVirtualBufferCache) virtualBufferCache).getFileMapProvider(), btreeTypeTraits, btreeCmpFactories,
-                BTreeLeafFrameType.REGULAR_NSM, btreeFileRef);
+        this.btree = BTreeUtils.createBTree(virtualBufferCache, virtualFreePageManager, btreeTypeTraits,
+                btreeCmpFactories, BTreeLeafFrameType.REGULAR_NSM, btreeFileRef);
     }
 
     @Override
@@ -219,4 +217,9 @@
     public int getNumOfFilterFields() {
         return 0;
     }
+
+    @Override
+    public void purge() throws HyracksDataException {
+        btree.purge();
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndex.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndex.java
index 277eb64..25e4201 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndex.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndex.java
@@ -26,6 +26,7 @@
 import org.apache.hyracks.api.context.IHyracksCommonContext;
 import org.apache.hyracks.api.dataflow.value.IBinaryComparatorFactory;
 import org.apache.hyracks.api.dataflow.value.ITypeTraits;
+import org.apache.hyracks.api.exceptions.ErrorCode;
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
 import org.apache.hyracks.api.io.IIOManager;
@@ -60,7 +61,6 @@
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.buffercache.IFIFOPageQueue;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 /**
  * An inverted index consists of two files: 1. a file storing (paginated)
@@ -94,7 +94,6 @@
     protected BTree btree;
     protected int rootPageId = 0;
     protected IBufferCache bufferCache;
-    protected IFileMapProvider fileMapProvider;
     protected int fileId = -1;
     protected final ITypeTraits[] invListTypeTraits;
     protected final IBinaryComparatorFactory[] invListCmpFactories;
@@ -109,21 +108,18 @@
     protected boolean isOpen = false;
     protected boolean wasOpen = false;
 
-    public OnDiskInvertedIndex(IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            IInvertedListBuilder invListBuilder, ITypeTraits[] invListTypeTraits,
-            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
-            IBinaryComparatorFactory[] tokenCmpFactories, FileReference btreeFile, FileReference invListsFile,
-            IPageManagerFactory pageManagerFactory) throws HyracksDataException {
+    public OnDiskInvertedIndex(IBufferCache bufferCache, IInvertedListBuilder invListBuilder,
+            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
+            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories, FileReference btreeFile,
+            FileReference invListsFile, IPageManagerFactory pageManagerFactory) throws HyracksDataException {
         this.bufferCache = bufferCache;
-        this.fileMapProvider = fileMapProvider;
         this.invListBuilder = invListBuilder;
         this.invListTypeTraits = invListTypeTraits;
         this.invListCmpFactories = invListCmpFactories;
         this.tokenTypeTraits = tokenTypeTraits;
         this.tokenCmpFactories = tokenCmpFactories;
-        this.btree = BTreeUtils.createBTree(bufferCache, fileMapProvider, getBTreeTypeTraits(tokenTypeTraits),
-                tokenCmpFactories, BTreeLeafFrameType.REGULAR_NSM, btreeFile,
-                pageManagerFactory.createPageManager(bufferCache));
+        this.btree = BTreeUtils.createBTree(bufferCache, getBTreeTypeTraits(tokenTypeTraits), tokenCmpFactories,
+                BTreeLeafFrameType.REGULAR_NSM, btreeFile, pageManagerFactory.createPageManager(bufferCache));
         this.numTokenFields = btree.getComparatorFactories().length;
         this.numInvListKeys = invListCmpFactories.length;
         this.invListsFile = invListsFile;
@@ -139,25 +135,7 @@
             throw new HyracksDataException("Failed to create since index is already open.");
         }
         btree.create();
-        boolean fileIsMapped = false;
-        synchronized (fileMapProvider) {
-            fileIsMapped = fileMapProvider.isMapped(invListsFile);
-            if (!fileIsMapped) {
-                bufferCache.createFile(invListsFile);
-            }
-            fileId = fileMapProvider.lookupFileId(invListsFile);
-            try {
-                // Also creates the file if it doesn't exist yet.
-                bufferCache.openFile(fileId);
-            } catch (HyracksDataException e) {
-                // Revert state of buffer cache since file failed to open.
-                if (!fileIsMapped) {
-                    bufferCache.deleteFile(fileId, false);
-                }
-                throw e;
-            }
-        }
-        bufferCache.closeFile(fileId);
+        fileId = bufferCache.createFile(invListsFile);
     }
 
     @Override
@@ -166,25 +144,11 @@
             throw new HyracksDataException("Failed to activate the index since it is already activated.");
         }
         btree.activate();
-        boolean fileIsMapped = false;
-        synchronized (fileMapProvider) {
-            fileIsMapped = fileMapProvider.isMapped(invListsFile);
-            if (!fileIsMapped) {
-                bufferCache.createFile(invListsFile);
-            }
-            fileId = fileMapProvider.lookupFileId(invListsFile);
-            try {
-                // Also creates the file if it doesn't exist yet.
-                bufferCache.openFile(fileId);
-            } catch (HyracksDataException e) {
-                // Revert state of buffer cache since file failed to open.
-                if (!fileIsMapped) {
-                    bufferCache.deleteFile(fileId, false);
-                }
-                throw e;
-            }
+        if (fileId >= 0) {
+            bufferCache.openFile(fileId);
+        } else {
+            fileId = bufferCache.openFile(invListsFile);
         }
-
         isOpen = true;
         wasOpen = true;
     }
@@ -194,10 +158,8 @@
         if (!isOpen && wasOpen) {
             throw new HyracksDataException("Failed to deactivate the index since it is already deactivated.");
         }
-
         btree.deactivate();
         bufferCache.closeFile(fileId);
-
         isOpen = false;
     }
 
@@ -206,15 +168,8 @@
         if (isOpen) {
             throw new HyracksDataException("Failed to destroy since index is already open.");
         }
-
         btree.destroy();
-        invListsFile.delete();
-        if (fileId == -1) {
-            return;
-        }
-
-        bufferCache.deleteFile(fileId, false);
-        fileId = -1;
+        bufferCache.deleteFile(invListsFile);
     }
 
     @Override
@@ -224,27 +179,9 @@
         }
         btree.clear();
         bufferCache.closeFile(fileId);
-        bufferCache.deleteFile(fileId, false);
-        invListsFile.getFile().delete();
-
-        boolean fileIsMapped = false;
-        synchronized (fileMapProvider) {
-            fileIsMapped = fileMapProvider.isMapped(invListsFile);
-            if (!fileIsMapped) {
-                bufferCache.createFile(invListsFile);
-            }
-            fileId = fileMapProvider.lookupFileId(invListsFile);
-            try {
-                // Also creates the file if it doesn't exist yet.
-                bufferCache.openFile(fileId);
-            } catch (HyracksDataException e) {
-                // Revert state of buffer cache since file failed to open.
-                if (!fileIsMapped) {
-                    bufferCache.deleteFile(fileId, false);
-                }
-                throw e;
-            }
-        }
+        bufferCache.deleteFile(fileId);
+        fileId = bufferCache.createFile(invListsFile);
+        bufferCache.openFile(fileId);
     }
 
     @Override
@@ -697,4 +634,14 @@
     public int getNumOfFilterFields() {
         return 0;
     }
+
+    @Override
+    public synchronized void purge() throws HyracksDataException {
+        if (isOpen) {
+            throw HyracksDataException.create(ErrorCode.CANNOT_PURGE_ACTIVE_INDEX);
+        }
+        btree.purge();
+        bufferCache.purgeHandle(fileId);
+        fileId = -1;
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndexFactory.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndexFactory.java
index dacef3c..70fcd03 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndexFactory.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndexFactory.java
@@ -30,7 +30,6 @@
 import org.apache.hyracks.storage.am.lsm.invertedindex.api.IInvertedListBuilder;
 import org.apache.hyracks.storage.am.lsm.invertedindex.api.IInvertedListBuilderFactory;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class OnDiskInvertedIndexFactory extends IndexFactory<IInvertedIndex> {
 
@@ -41,12 +40,12 @@
     protected final IBinaryComparatorFactory[] tokenCmpFactories;
     protected final IInvertedIndexFileNameMapper fileNameMapper;
 
-    public OnDiskInvertedIndexFactory(IIOManager ioManager, IBufferCache bufferCache, IFileMapProvider fileMapProvider,
+    public OnDiskInvertedIndexFactory(IIOManager ioManager, IBufferCache bufferCache,
             IInvertedListBuilderFactory invListBuilderFactory, ITypeTraits[] invListTypeTraits,
             IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
             IBinaryComparatorFactory[] tokenCmpFactories, IInvertedIndexFileNameMapper fileNameMapper,
             IPageManagerFactory pageManagerFactory) {
-        super(ioManager, bufferCache, fileMapProvider, pageManagerFactory);
+        super(ioManager, bufferCache, pageManagerFactory);
         this.invListBuilderFactory = invListBuilderFactory;
         this.invListTypeTraits = invListTypeTraits;
         this.invListCmpFactories = invListCmpFactories;
@@ -60,8 +59,7 @@
         String invListsFilePath = fileNameMapper.getInvListsFilePath(dictBTreeFile.getFile().getAbsolutePath());
         FileReference invListsFile = ioManager.resolveAbsolutePath(invListsFilePath);
         IInvertedListBuilder invListBuilder = invListBuilderFactory.create();
-        return new OnDiskInvertedIndex(bufferCache, fileMapProvider, invListBuilder, invListTypeTraits,
-                invListCmpFactories, tokenTypeTraits, tokenCmpFactories, dictBTreeFile, invListsFile,
-                freePageManagerFactory);
+        return new OnDiskInvertedIndex(bufferCache, invListBuilder, invListTypeTraits, invListCmpFactories,
+                tokenTypeTraits, tokenCmpFactories, dictBTreeFile, invListsFile, freePageManagerFactory);
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/PartitionedOnDiskInvertedIndex.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/PartitionedOnDiskInvertedIndex.java
index 452d59b..0c0110e 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/PartitionedOnDiskInvertedIndex.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/PartitionedOnDiskInvertedIndex.java
@@ -39,19 +39,17 @@
 import org.apache.hyracks.storage.common.IModificationOperationCallback;
 import org.apache.hyracks.storage.common.ISearchOperationCallback;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class PartitionedOnDiskInvertedIndex extends OnDiskInvertedIndex implements IPartitionedInvertedIndex {
 
     protected final int PARTITIONING_NUM_TOKENS_FIELD = 1;
 
-    public PartitionedOnDiskInvertedIndex(IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            IInvertedListBuilder invListBuilder, ITypeTraits[] invListTypeTraits,
-            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
-            IBinaryComparatorFactory[] tokenCmpFactories, FileReference btreeFile, FileReference invListsFile,
-            IPageManagerFactory pageManagerFactory) throws HyracksDataException {
-        super(bufferCache, fileMapProvider, invListBuilder, invListTypeTraits, invListCmpFactories, tokenTypeTraits,
-                tokenCmpFactories, btreeFile, invListsFile, pageManagerFactory);
+    public PartitionedOnDiskInvertedIndex(IBufferCache bufferCache, IInvertedListBuilder invListBuilder,
+            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
+            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories, FileReference btreeFile,
+            FileReference invListsFile, IPageManagerFactory pageManagerFactory) throws HyracksDataException {
+        super(bufferCache, invListBuilder, invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories,
+                btreeFile, invListsFile, pageManagerFactory);
     }
 
     public class PartitionedOnDiskInvertedIndexAccessor extends OnDiskInvertedIndexAccessor {
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/PartitionedOnDiskInvertedIndexFactory.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/PartitionedOnDiskInvertedIndexFactory.java
index ebc0152..5b2888a 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/PartitionedOnDiskInvertedIndexFactory.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/PartitionedOnDiskInvertedIndexFactory.java
@@ -29,17 +29,16 @@
 import org.apache.hyracks.storage.am.lsm.invertedindex.api.IInvertedListBuilder;
 import org.apache.hyracks.storage.am.lsm.invertedindex.api.IInvertedListBuilderFactory;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class PartitionedOnDiskInvertedIndexFactory extends OnDiskInvertedIndexFactory {
 
     public PartitionedOnDiskInvertedIndexFactory(IIOManager ioManager, IBufferCache bufferCache,
-            IFileMapProvider fileMapProvider, IInvertedListBuilderFactory invListBuilderFactory,
-            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
-            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories,
-            IInvertedIndexFileNameMapper fileNameMapper, IPageManagerFactory pageManagerFactory) {
-        super(ioManager, bufferCache, fileMapProvider, invListBuilderFactory, invListTypeTraits, invListCmpFactories,
-                tokenTypeTraits, tokenCmpFactories, fileNameMapper, pageManagerFactory);
+            IInvertedListBuilderFactory invListBuilderFactory, ITypeTraits[] invListTypeTraits,
+            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
+            IBinaryComparatorFactory[] tokenCmpFactories, IInvertedIndexFileNameMapper fileNameMapper,
+            IPageManagerFactory pageManagerFactory) {
+        super(ioManager, bufferCache, invListBuilderFactory, invListTypeTraits, invListCmpFactories, tokenTypeTraits,
+                tokenCmpFactories, fileNameMapper, pageManagerFactory);
     }
 
     @Override
@@ -47,8 +46,7 @@
         String invListsFilePath = fileNameMapper.getInvListsFilePath(dictBTreeFile.getFile().getAbsolutePath());
         FileReference invListsFile = ioManager.resolveAbsolutePath(invListsFilePath);
         IInvertedListBuilder invListBuilder = invListBuilderFactory.create();
-        return new PartitionedOnDiskInvertedIndex(bufferCache, fileMapProvider, invListBuilder, invListTypeTraits,
-                invListCmpFactories, tokenTypeTraits, tokenCmpFactories, dictBTreeFile, invListsFile,
-                freePageManagerFactory);
+        return new PartitionedOnDiskInvertedIndex(bufferCache, invListBuilder, invListTypeTraits, invListCmpFactories,
+                tokenTypeTraits, tokenCmpFactories, dictBTreeFile, invListsFile, freePageManagerFactory);
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexUtils.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexUtils.java
index 8a36f61..540e100 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexUtils.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/org/apache/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexUtils.java
@@ -59,7 +59,6 @@
 import org.apache.hyracks.storage.am.lsm.invertedindex.ondisk.PartitionedOnDiskInvertedIndexFactory;
 import org.apache.hyracks.storage.am.lsm.invertedindex.tokenizers.IBinaryTokenizerFactory;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class InvertedIndexUtils {
 
@@ -82,25 +81,23 @@
     }
 
     public static OnDiskInvertedIndex createOnDiskInvertedIndex(IIOManager ioManager, IBufferCache bufferCache,
-            IFileMapProvider fileMapProvider, ITypeTraits[] invListTypeTraits,
-            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
-            IBinaryComparatorFactory[] tokenCmpFactories, FileReference invListsFile,
+            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
+            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories, FileReference invListsFile,
             IPageManagerFactory pageManagerFactory) throws HyracksDataException {
         IInvertedListBuilder builder = new FixedSizeElementInvertedListBuilder(invListTypeTraits);
         FileReference btreeFile = getBTreeFile(ioManager, invListsFile);
-        return new OnDiskInvertedIndex(bufferCache, fileMapProvider, builder, invListTypeTraits, invListCmpFactories,
-                tokenTypeTraits, tokenCmpFactories, btreeFile, invListsFile, pageManagerFactory);
+        return new OnDiskInvertedIndex(bufferCache, builder, invListTypeTraits, invListCmpFactories, tokenTypeTraits,
+                tokenCmpFactories, btreeFile, invListsFile, pageManagerFactory);
     }
 
     public static PartitionedOnDiskInvertedIndex createPartitionedOnDiskInvertedIndex(IIOManager ioManager,
-            IBufferCache bufferCache, IFileMapProvider fileMapProvider, ITypeTraits[] invListTypeTraits,
-            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
-            IBinaryComparatorFactory[] tokenCmpFactories, FileReference invListsFile,
+            IBufferCache bufferCache, ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
+            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories, FileReference invListsFile,
             IPageManagerFactory pageManagerFactory) throws HyracksDataException {
         IInvertedListBuilder builder = new FixedSizeElementInvertedListBuilder(invListTypeTraits);
         FileReference btreeFile = getBTreeFile(ioManager, invListsFile);
-        return new PartitionedOnDiskInvertedIndex(bufferCache, fileMapProvider, builder, invListTypeTraits,
-                invListCmpFactories, tokenTypeTraits, tokenCmpFactories, btreeFile, invListsFile, pageManagerFactory);
+        return new PartitionedOnDiskInvertedIndex(bufferCache, builder, invListTypeTraits, invListCmpFactories,
+                tokenTypeTraits, tokenCmpFactories, btreeFile, invListsFile, pageManagerFactory);
     }
 
     public static FileReference getBTreeFile(IIOManager ioManager, FileReference invListsFile)
@@ -108,49 +105,46 @@
         return ioManager.resolveAbsolutePath(invListsFile.getFile().getPath() + "_btree");
     }
 
-    public static BTreeFactory createDeletedKeysBTreeFactory(IIOManager ioManager, IFileMapProvider diskFileMapProvider,
-            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
-            IBufferCache diskBufferCache, IPageManagerFactory freePageManagerFactory) throws HyracksDataException {
+    public static BTreeFactory createDeletedKeysBTreeFactory(IIOManager ioManager, ITypeTraits[] invListTypeTraits,
+            IBinaryComparatorFactory[] invListCmpFactories, IBufferCache diskBufferCache,
+            IPageManagerFactory freePageManagerFactory) throws HyracksDataException {
         TypeAwareTupleWriterFactory tupleWriterFactory = new TypeAwareTupleWriterFactory(invListTypeTraits);
         ITreeIndexFrameFactory leafFrameFactory =
                 BTreeUtils.getLeafFrameFactory(tupleWriterFactory, BTreeLeafFrameType.REGULAR_NSM);
         ITreeIndexFrameFactory interiorFrameFactory = new BTreeNSMInteriorFrameFactory(tupleWriterFactory);
-        BTreeFactory deletedKeysBTreeFactory =
-                new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider, freePageManagerFactory,
-                        interiorFrameFactory, leafFrameFactory, invListCmpFactories, invListCmpFactories.length);
-        return deletedKeysBTreeFactory;
+        return new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory, interiorFrameFactory,
+                leafFrameFactory, invListCmpFactories, invListCmpFactories.length);
     }
 
     public static LSMInvertedIndex createLSMInvertedIndex(IIOManager ioManager,
-            List<IVirtualBufferCache> virtualBufferCaches, IFileMapProvider diskFileMapProvider,
-            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
-            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories,
-            IBinaryTokenizerFactory tokenizerFactory, IBufferCache diskBufferCache, String absoluteOnDiskDir,
-            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, int[] invertedIndexFields,
-            ITypeTraits[] filterTypeTraits, IBinaryComparatorFactory[] filterCmpFactories, int[] filterFields,
-            int[] filterFieldsForNonBulkLoadOps, int[] invertedIndexFieldsForNonBulkLoadOps, boolean durable,
-            IMetadataPageManagerFactory pageManagerFactory) throws HyracksDataException {
+            List<IVirtualBufferCache> virtualBufferCaches, ITypeTraits[] invListTypeTraits,
+            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
+            IBinaryComparatorFactory[] tokenCmpFactories, IBinaryTokenizerFactory tokenizerFactory,
+            IBufferCache diskBufferCache, String absoluteOnDiskDir, double bloomFilterFalsePositiveRate,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, int[] invertedIndexFields, ITypeTraits[] filterTypeTraits,
+            IBinaryComparatorFactory[] filterCmpFactories, int[] filterFields, int[] filterFieldsForNonBulkLoadOps,
+            int[] invertedIndexFieldsForNonBulkLoadOps, boolean durable, IMetadataPageManagerFactory pageManagerFactory)
+            throws HyracksDataException {
 
-        BTreeFactory deletedKeysBTreeFactory = createDeletedKeysBTreeFactory(ioManager, diskFileMapProvider,
-                invListTypeTraits, invListCmpFactories, diskBufferCache, pageManagerFactory);
+        BTreeFactory deletedKeysBTreeFactory = createDeletedKeysBTreeFactory(ioManager, invListTypeTraits,
+                invListCmpFactories, diskBufferCache, pageManagerFactory);
 
         int[] bloomFilterKeyFields = new int[invListCmpFactories.length];
         for (int i = 0; i < invListCmpFactories.length; i++) {
             bloomFilterKeyFields[i] = i;
         }
-        BloomFilterFactory bloomFilterFactory =
-                new BloomFilterFactory(diskBufferCache, diskFileMapProvider, bloomFilterKeyFields);
+        BloomFilterFactory bloomFilterFactory = new BloomFilterFactory(diskBufferCache, bloomFilterKeyFields);
 
         FileReference onDiskDirFileRef = ioManager.resolveAbsolutePath(absoluteOnDiskDir);
-        LSMInvertedIndexFileManager fileManager = new LSMInvertedIndexFileManager(ioManager, diskFileMapProvider,
-                onDiskDirFileRef, deletedKeysBTreeFactory);
+        LSMInvertedIndexFileManager fileManager =
+                new LSMInvertedIndexFileManager(ioManager, onDiskDirFileRef, deletedKeysBTreeFactory);
 
         IInvertedListBuilderFactory invListBuilderFactory =
                 new FixedSizeElementInvertedListBuilderFactory(invListTypeTraits);
-        OnDiskInvertedIndexFactory invIndexFactory = new OnDiskInvertedIndexFactory(ioManager, diskBufferCache,
-                diskFileMapProvider, invListBuilderFactory, invListTypeTraits, invListCmpFactories, tokenTypeTraits,
-                tokenCmpFactories, fileManager, pageManagerFactory);
+        OnDiskInvertedIndexFactory invIndexFactory =
+                new OnDiskInvertedIndexFactory(ioManager, diskBufferCache, invListBuilderFactory, invListTypeTraits,
+                        invListCmpFactories, tokenTypeTraits, tokenCmpFactories, fileManager, pageManagerFactory);
 
         ComponentFilterHelper filterHelper = null;
         LSMComponentFilterFrameFactory filterFrameFactory = null;
@@ -163,42 +157,40 @@
         }
         return new LSMInvertedIndex(ioManager, virtualBufferCaches, invIndexFactory, deletedKeysBTreeFactory,
                 bloomFilterFactory, filterHelper, filterFrameFactory, filterManager, bloomFilterFalsePositiveRate,
-                fileManager, diskFileMapProvider, invListTypeTraits, invListCmpFactories, tokenTypeTraits,
-                tokenCmpFactories, tokenizerFactory, mergePolicy, opTracker, ioScheduler, ioOpCallback,
-                invertedIndexFields, filterFields, filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps,
-                durable);
+                fileManager, invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories,
+                tokenizerFactory, mergePolicy, opTracker, ioScheduler, ioOpCallback, invertedIndexFields, filterFields,
+                filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, durable);
     }
 
     public static PartitionedLSMInvertedIndex createPartitionedLSMInvertedIndex(IIOManager ioManager,
-            List<IVirtualBufferCache> virtualBufferCaches, IFileMapProvider diskFileMapProvider,
-            ITypeTraits[] invListTypeTraits, IBinaryComparatorFactory[] invListCmpFactories,
-            ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenCmpFactories,
-            IBinaryTokenizerFactory tokenizerFactory, IBufferCache diskBufferCache, String absoluteOnDiskDir,
-            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, int[] invertedIndexFields,
-            ITypeTraits[] filterTypeTraits, IBinaryComparatorFactory[] filterCmpFactories, int[] filterFields,
-            int[] filterFieldsForNonBulkLoadOps, int[] invertedIndexFieldsForNonBulkLoadOps, boolean durable,
-            IPageManagerFactory pageManagerFactory) throws HyracksDataException {
+            List<IVirtualBufferCache> virtualBufferCaches, ITypeTraits[] invListTypeTraits,
+            IBinaryComparatorFactory[] invListCmpFactories, ITypeTraits[] tokenTypeTraits,
+            IBinaryComparatorFactory[] tokenCmpFactories, IBinaryTokenizerFactory tokenizerFactory,
+            IBufferCache diskBufferCache, String absoluteOnDiskDir, double bloomFilterFalsePositiveRate,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, int[] invertedIndexFields, ITypeTraits[] filterTypeTraits,
+            IBinaryComparatorFactory[] filterCmpFactories, int[] filterFields, int[] filterFieldsForNonBulkLoadOps,
+            int[] invertedIndexFieldsForNonBulkLoadOps, boolean durable, IPageManagerFactory pageManagerFactory)
+            throws HyracksDataException {
 
-        BTreeFactory deletedKeysBTreeFactory = createDeletedKeysBTreeFactory(ioManager, diskFileMapProvider,
-                invListTypeTraits, invListCmpFactories, diskBufferCache, pageManagerFactory);
+        BTreeFactory deletedKeysBTreeFactory = createDeletedKeysBTreeFactory(ioManager, invListTypeTraits,
+                invListCmpFactories, diskBufferCache, pageManagerFactory);
 
         int[] bloomFilterKeyFields = new int[invListCmpFactories.length];
         for (int i = 0; i < invListCmpFactories.length; i++) {
             bloomFilterKeyFields[i] = i;
         }
-        BloomFilterFactory bloomFilterFactory =
-                new BloomFilterFactory(diskBufferCache, diskFileMapProvider, bloomFilterKeyFields);
+        BloomFilterFactory bloomFilterFactory = new BloomFilterFactory(diskBufferCache, bloomFilterKeyFields);
 
         FileReference onDiskDirFileRef = ioManager.resolveAbsolutePath(absoluteOnDiskDir);
-        LSMInvertedIndexFileManager fileManager = new LSMInvertedIndexFileManager(ioManager, diskFileMapProvider,
-                onDiskDirFileRef, deletedKeysBTreeFactory);
+        LSMInvertedIndexFileManager fileManager =
+                new LSMInvertedIndexFileManager(ioManager, onDiskDirFileRef, deletedKeysBTreeFactory);
 
         IInvertedListBuilderFactory invListBuilderFactory =
                 new FixedSizeElementInvertedListBuilderFactory(invListTypeTraits);
         PartitionedOnDiskInvertedIndexFactory invIndexFactory = new PartitionedOnDiskInvertedIndexFactory(ioManager,
-                diskBufferCache, diskFileMapProvider, invListBuilderFactory, invListTypeTraits, invListCmpFactories,
-                tokenTypeTraits, tokenCmpFactories, fileManager, pageManagerFactory);
+                diskBufferCache, invListBuilderFactory, invListTypeTraits, invListCmpFactories, tokenTypeTraits,
+                tokenCmpFactories, fileManager, pageManagerFactory);
 
         ComponentFilterHelper filterHelper = null;
         LSMComponentFilterFrameFactory filterFrameFactory = null;
@@ -211,9 +203,8 @@
         }
         return new PartitionedLSMInvertedIndex(ioManager, virtualBufferCaches, invIndexFactory, deletedKeysBTreeFactory,
                 bloomFilterFactory, filterHelper, filterFrameFactory, filterManager, bloomFilterFalsePositiveRate,
-                fileManager, diskFileMapProvider, invListTypeTraits, invListCmpFactories, tokenTypeTraits,
-                tokenCmpFactories, tokenizerFactory, mergePolicy, opTracker, ioScheduler, ioOpCallback,
-                invertedIndexFields, filterFields, filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps,
-                durable);
+                fileManager, invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories,
+                tokenizerFactory, mergePolicy, opTracker, ioScheduler, ioOpCallback, invertedIndexFields, filterFields,
+                filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, durable);
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/ExternalRTreeLocalResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/ExternalRTreeLocalResource.java
index 6139420..3acfe92 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/ExternalRTreeLocalResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/ExternalRTreeLocalResource.java
@@ -67,9 +67,8 @@
         IIOManager ioManager = ncServiceCtx.getIoManager();
         FileReference fileRef = ioManager.resolve(path);
         return LSMRTreeUtils.createExternalRTree(ioManager, fileRef, storageManager.getBufferCache(ncServiceCtx),
-                storageManager.getFileMapProvider(ncServiceCtx), typeTraits, cmpFactories, btreeCmpFactories,
-                valueProviderFactories, rtreePolicyType, bloomFilterFalsePositiveRate,
-                mergePolicyFactory.createMergePolicy(mergePolicyProperties, ncServiceCtx),
+                typeTraits, cmpFactories, btreeCmpFactories, valueProviderFactories, rtreePolicyType,
+                bloomFilterFalsePositiveRate, mergePolicyFactory.createMergePolicy(mergePolicyProperties, ncServiceCtx),
                 opTrackerProvider.getOperationTracker(ncServiceCtx), ioSchedulerProvider.getIoScheduler(ncServiceCtx),
                 ioOpCallbackFactory.createIoOpCallback(), linearizeCmpFactory, buddyBTreeFields, durable, isPointMBR,
                 metadataPageManagerFactory);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeLocalResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeLocalResource.java
index 2eecb30..b272dbe 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeLocalResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeLocalResource.java
@@ -84,9 +84,9 @@
         FileReference fileRef = ioManager.resolve(path);
         List<IVirtualBufferCache> virtualBufferCaches = vbcProvider.getVirtualBufferCaches(ncServiceCtx, fileRef);
         return LSMRTreeUtils.createLSMTree(ioManager, virtualBufferCaches, fileRef,
-                storageManager.getBufferCache(ncServiceCtx), storageManager.getFileMapProvider(ncServiceCtx),
-                typeTraits, cmpFactories, btreeCmpFactories, valueProviderFactories, rtreePolicyType,
-                bloomFilterFalsePositiveRate, mergePolicyFactory.createMergePolicy(mergePolicyProperties, ncServiceCtx),
+                storageManager.getBufferCache(ncServiceCtx), typeTraits, cmpFactories, btreeCmpFactories,
+                valueProviderFactories, rtreePolicyType, bloomFilterFalsePositiveRate,
+                mergePolicyFactory.createMergePolicy(mergePolicyProperties, ncServiceCtx),
                 opTrackerProvider.getOperationTracker(ncServiceCtx), ioSchedulerProvider.getIoScheduler(ncServiceCtx),
                 ioOpCallbackFactory.createIoOpCallback(), linearizeCmpFactory, rtreeFields, buddyBTreeFields,
                 filterTypeTraits, filterCmpFactories, filterFields, durable, isPointMBR, metadataPageManagerFactory);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeWithAntiMatterLocalResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeWithAntiMatterLocalResource.java
index 429a1cd..78f1fd0 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeWithAntiMatterLocalResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeWithAntiMatterLocalResource.java
@@ -79,8 +79,8 @@
         FileReference file = ioManager.resolve(path);
         List<IVirtualBufferCache> virtualBufferCaches = vbcProvider.getVirtualBufferCaches(serviceCtx, file);
         return LSMRTreeUtils.createLSMTreeWithAntiMatterTuples(ioManager, virtualBufferCaches, file,
-                storageManager.getBufferCache(serviceCtx), storageManager.getFileMapProvider(serviceCtx), typeTraits,
-                cmpFactories, btreeComparatorFactories, valueProviderFactories, rtreePolicyType,
+                storageManager.getBufferCache(serviceCtx), typeTraits, cmpFactories, btreeComparatorFactories,
+                valueProviderFactories, rtreePolicyType,
                 mergePolicyFactory.createMergePolicy(mergePolicyProperties, serviceCtx),
                 opTrackerProvider.getOperationTracker(serviceCtx), ioSchedulerProvider.getIoScheduler(serviceCtx),
                 ioOpCallbackFactory.createIoOpCallback(), linearizeCmpFactory, rtreeFields, filterTypeTraits,
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/AbstractLSMRTree.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/AbstractLSMRTree.java
index 444fd9d..4f29c89 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/AbstractLSMRTree.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/AbstractLSMRTree.java
@@ -56,7 +56,6 @@
 import org.apache.hyracks.storage.common.ISearchOperationCallback;
 import org.apache.hyracks.storage.common.ISearchPredicate;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public abstract class AbstractLSMRTree extends AbstractLSMIndex implements ITreeIndex {
 
@@ -81,27 +80,24 @@
     public AbstractLSMRTree(IIOManager ioManager, List<IVirtualBufferCache> virtualBufferCaches,
             ITreeIndexFrameFactory rtreeInteriorFrameFactory, ITreeIndexFrameFactory rtreeLeafFrameFactory,
             ITreeIndexFrameFactory btreeInteriorFrameFactory, ITreeIndexFrameFactory btreeLeafFrameFactory,
-            ILSMIndexFileManager fileManager, ILSMDiskComponentFactory componentFactory,
-            IFileMapProvider diskFileMapProvider, int fieldCount, IBinaryComparatorFactory[] rtreeCmpFactories,
-            IBinaryComparatorFactory[] btreeCmpFactories, ILinearizeComparatorFactory linearizer,
-            int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray, double bloomFilterFalsePositiveRate,
-            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
-            ILSMIOOperationCallback ioOpCallback, IComponentFilterHelper filterHelper,
-            ILSMComponentFilterFrameFactory filterFrameFactory, LSMComponentFilterManager filterManager,
-            int[] rtreeFields, int[] filterFields, boolean durable, boolean isPointMBR, IBufferCache diskBufferCache)
-            throws HyracksDataException {
-        super(ioManager, virtualBufferCaches, diskBufferCache, fileManager, diskFileMapProvider,
-                bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback, filterFrameFactory,
-                filterManager, filterFields, durable, filterHelper, rtreeFields);
+            ILSMIndexFileManager fileManager, ILSMDiskComponentFactory componentFactory, int fieldCount,
+            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeCmpFactories,
+            ILinearizeComparatorFactory linearizer, int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray,
+            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
+            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
+            IComponentFilterHelper filterHelper, ILSMComponentFilterFrameFactory filterFrameFactory,
+            LSMComponentFilterManager filterManager, int[] rtreeFields, int[] filterFields, boolean durable,
+            boolean isPointMBR, IBufferCache diskBufferCache) throws HyracksDataException {
+        super(ioManager, virtualBufferCaches, diskBufferCache, fileManager, bloomFilterFalsePositiveRate, mergePolicy,
+                opTracker, ioScheduler, ioOpCallback, filterFrameFactory, filterManager, filterFields, durable,
+                filterHelper, rtreeFields);
         int i = 0;
         for (IVirtualBufferCache virtualBufferCache : virtualBufferCaches) {
-            RTree memRTree = new RTree(virtualBufferCache, virtualBufferCache.getFileMapProvider(),
-                    new VirtualFreePageManager(virtualBufferCache), rtreeInteriorFrameFactory, rtreeLeafFrameFactory,
-                    rtreeCmpFactories, fieldCount,
+            RTree memRTree = new RTree(virtualBufferCache, new VirtualFreePageManager(virtualBufferCache),
+                    rtreeInteriorFrameFactory, rtreeLeafFrameFactory, rtreeCmpFactories, fieldCount,
                     ioManager.resolveAbsolutePath(fileManager.getBaseDir() + "_virtual_r_" + i), isPointMBR);
-            BTree memBTree = new BTree(virtualBufferCache, virtualBufferCache.getFileMapProvider(),
-                    new VirtualFreePageManager(virtualBufferCache), btreeInteriorFrameFactory, btreeLeafFrameFactory,
-                    btreeCmpFactories, btreeCmpFactories.length,
+            BTree memBTree = new BTree(virtualBufferCache, new VirtualFreePageManager(virtualBufferCache),
+                    btreeInteriorFrameFactory, btreeLeafFrameFactory, btreeCmpFactories, btreeCmpFactories.length,
                     ioManager.resolveAbsolutePath(fileManager.getBaseDir() + "_virtual_b_" + i));
             LSMRTreeMemoryComponent mutableComponent =
                     new LSMRTreeMemoryComponent(memRTree, memBTree, virtualBufferCache, i == 0 ? true : false,
@@ -129,14 +125,13 @@
     public AbstractLSMRTree(IIOManager ioManager, ITreeIndexFrameFactory rtreeInteriorFrameFactory,
             ITreeIndexFrameFactory rtreeLeafFrameFactory, ITreeIndexFrameFactory btreeInteriorFrameFactory,
             ITreeIndexFrameFactory btreeLeafFrameFactory, ILSMIndexFileManager fileManager,
-            ILSMDiskComponentFactory componentFactory, IFileMapProvider diskFileMapProvider,
-            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeCmpFactories,
-            ILinearizeComparatorFactory linearizer, int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray,
-            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback, boolean durable,
-            boolean isPointMBR, IBufferCache diskBufferCache) {
-        super(ioManager, diskBufferCache, fileManager, diskFileMapProvider, bloomFilterFalsePositiveRate, mergePolicy,
-                opTracker, ioScheduler, ioOpCallback, durable);
+            ILSMDiskComponentFactory componentFactory, IBinaryComparatorFactory[] rtreeCmpFactories,
+            IBinaryComparatorFactory[] btreeCmpFactories, ILinearizeComparatorFactory linearizer,
+            int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray, double bloomFilterFalsePositiveRate,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, boolean durable, boolean isPointMBR, IBufferCache diskBufferCache) {
+        super(ioManager, diskBufferCache, fileManager, bloomFilterFalsePositiveRate, mergePolicy, opTracker,
+                ioScheduler, ioOpCallback, durable);
         this.rtreeInteriorFrameFactory = rtreeInteriorFrameFactory;
         this.rtreeLeafFrameFactory = rtreeLeafFrameFactory;
         this.btreeInteriorFrameFactory = btreeInteriorFrameFactory;
@@ -329,13 +324,6 @@
     }
 
     @Override
-    protected void destroyMemoryComponent(ILSMMemoryComponent c) throws HyracksDataException {
-        LSMRTreeMemoryComponent mutableComponent = (LSMRTreeMemoryComponent) c;
-        mutableComponent.getRTree().destroy();
-        mutableComponent.getBTree().destroy();
-    }
-
-    @Override
     protected LSMComponentFileReferences getMergeFileReferences(ILSMDiskComponent firstComponent,
             ILSMDiskComponent lastComponent) throws HyracksDataException {
         RTree firstTree = ((LSMRTreeDiskComponent) firstComponent).getRTree();
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/ExternalRTree.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/ExternalRTree.java
index 987aec7..512e35c 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/ExternalRTree.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/ExternalRTree.java
@@ -62,7 +62,6 @@
 import org.apache.hyracks.storage.common.IModificationOperationCallback;
 import org.apache.hyracks.storage.common.ISearchOperationCallback;
 import org.apache.hyracks.storage.common.ISearchPredicate;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 /**
  * This is an lsm r-tree that does not have memory component and is modified
@@ -86,17 +85,16 @@
             ITreeIndexFrameFactory rtreeLeafFrameFactory, ITreeIndexFrameFactory btreeInteriorFrameFactory,
             ITreeIndexFrameFactory btreeLeafFrameFactory, ILSMIndexFileManager fileNameManager,
             TreeIndexFactory<RTree> diskRTreeFactory, TreeIndexFactory<BTree> diskBTreeFactory,
-            BloomFilterFactory bloomFilterFactory, double bloomFilterFalsePositiveRate,
-            IFileMapProvider diskFileMapProvider, int fieldCount, IBinaryComparatorFactory[] rtreeCmpFactories,
-            IBinaryComparatorFactory[] btreeCmpFactories, ILinearizeComparatorFactory linearizer,
-            int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray, ILSMMergePolicy mergePolicy,
-            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-            int[] buddyBTreeFields, boolean durable, boolean isPointMBR) {
+            BloomFilterFactory bloomFilterFactory, double bloomFilterFalsePositiveRate, int fieldCount,
+            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeCmpFactories,
+            ILinearizeComparatorFactory linearizer, int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, int[] buddyBTreeFields, boolean durable, boolean isPointMBR) {
         super(ioManager, rtreeInteriorFrameFactory, rtreeLeafFrameFactory, btreeInteriorFrameFactory,
                 btreeLeafFrameFactory, fileNameManager, diskRTreeFactory, diskBTreeFactory, bloomFilterFactory,
-                bloomFilterFalsePositiveRate, diskFileMapProvider, rtreeCmpFactories, btreeCmpFactories, linearizer,
-                comparatorFields, linearizerArray, mergePolicy, opTracker, ioScheduler, ioOpCallback, buddyBTreeFields,
-                durable, isPointMBR);
+                bloomFilterFalsePositiveRate, rtreeCmpFactories, btreeCmpFactories, linearizer, comparatorFields,
+                linearizerArray, mergePolicy, opTracker, ioScheduler, ioOpCallback, buddyBTreeFields, durable,
+                isPointMBR);
         this.secondDiskComponents = new LinkedList<>();
         this.fieldCount = fieldCount;
     }
@@ -345,25 +343,12 @@
             cb.afterFinalize(LSMOperationType.FLUSH, null);
         }
 
-        for (ILSMComponent c : diskComponents) {
-            LSMRTreeDiskComponent component = (LSMRTreeDiskComponent) c;
-            RTree rtree = component.getRTree();
-            BTree btree = component.getBTree();
-            BloomFilter bloomFilter = component.getBloomFilter();
-            rtree.deactivateCloseHandle();
-            btree.deactivateCloseHandle();
-            bloomFilter.deactivate();
+        for (ILSMDiskComponent c : diskComponents) {
+            deactivateDiskComponent(c);
         }
-        for (ILSMComponent c : secondDiskComponents) {
-            // Only deactivate non shared components
+        for (ILSMDiskComponent c : secondDiskComponents) {
             if (!diskComponents.contains(c)) {
-                LSMRTreeDiskComponent component = (LSMRTreeDiskComponent) c;
-                RTree rtree = component.getRTree();
-                BTree btree = component.getBTree();
-                BloomFilter bloomFilter = component.getBloomFilter();
-                rtree.deactivateCloseHandle();
-                btree.deactivateCloseHandle();
-                bloomFilter.deactivate();
+                deactivateDiskComponent(c);
             }
         }
         isActive = false;
@@ -410,19 +395,13 @@
         if (isActive) {
             throw new HyracksDataException("Failed to destroy the index since it is activated.");
         }
-        for (ILSMComponent c : diskComponents) {
-            LSMRTreeDiskComponent component = (LSMRTreeDiskComponent) c;
-            component.getRTree().destroy();
-            component.getBTree().destroy();
-            component.getBloomFilter().destroy();
+        for (ILSMDiskComponent c : diskComponents) {
+            destroyDiskComponent(c);
             // Remove from second list to avoid destroying twice
             secondDiskComponents.remove(c);
         }
-        for (ILSMComponent c : secondDiskComponents) {
-            LSMRTreeDiskComponent component = (LSMRTreeDiskComponent) c;
-            component.getRTree().destroy();
-            component.getBTree().destroy();
-            component.getBloomFilter().destroy();
+        for (ILSMDiskComponent c : secondDiskComponents) {
+            destroyDiskComponent(c);
         }
         diskComponents.clear();
         secondDiskComponents.clear();
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTree.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTree.java
index 56af16d..6c1d7ba 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTree.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTree.java
@@ -73,7 +73,6 @@
 import org.apache.hyracks.storage.common.ISearchOperationCallback;
 import org.apache.hyracks.storage.common.ISearchPredicate;
 import org.apache.hyracks.storage.common.MultiComparator;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMRTree extends AbstractLSMRTree {
     protected final int[] buddyBTreeFields;
@@ -84,19 +83,18 @@
             ILSMIndexFileManager fileNameManager, TreeIndexFactory<RTree> diskRTreeFactory,
             TreeIndexFactory<BTree> diskBTreeFactory, BloomFilterFactory bloomFilterFactory,
             IComponentFilterHelper filterHelper, ILSMComponentFilterFrameFactory filterFrameFactory,
-            LSMComponentFilterManager filterManager, double bloomFilterFalsePositiveRate,
-            IFileMapProvider diskFileMapProvider, int fieldCount, IBinaryComparatorFactory[] rtreeCmpFactories,
-            IBinaryComparatorFactory[] btreeCmpFactories, ILinearizeComparatorFactory linearizer,
-            int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray, ILSMMergePolicy mergePolicy,
-            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-            int[] rtreeFields, int[] buddyBTreeFields, int[] filterFields, boolean durable, boolean isPointMBR)
-            throws HyracksDataException {
+            LSMComponentFilterManager filterManager, double bloomFilterFalsePositiveRate, int fieldCount,
+            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeCmpFactories,
+            ILinearizeComparatorFactory linearizer, int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, int[] rtreeFields, int[] buddyBTreeFields, int[] filterFields,
+            boolean durable, boolean isPointMBR) throws HyracksDataException {
         super(ioManager, virtualBufferCaches, rtreeInteriorFrameFactory, rtreeLeafFrameFactory,
                 btreeInteriorFrameFactory, btreeLeafFrameFactory, fileNameManager,
                 new LSMRTreeDiskComponentFactory(diskRTreeFactory, diskBTreeFactory, bloomFilterFactory, filterHelper),
-                diskFileMapProvider, fieldCount, rtreeCmpFactories, btreeCmpFactories, linearizer, comparatorFields,
-                linearizerArray, bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback,
-                filterHelper, filterFrameFactory, filterManager, rtreeFields, filterFields, durable, isPointMBR,
+                fieldCount, rtreeCmpFactories, btreeCmpFactories, linearizer, comparatorFields, linearizerArray,
+                bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback, filterHelper,
+                filterFrameFactory, filterManager, rtreeFields, filterFields, durable, isPointMBR,
                 diskRTreeFactory.getBufferCache());
         this.buddyBTreeFields = buddyBTreeFields;
     }
@@ -109,17 +107,16 @@
             ITreeIndexFrameFactory btreeLeafFrameFactory, ILSMIndexFileManager fileNameManager,
             TreeIndexFactory<RTree> diskRTreeFactory, TreeIndexFactory<BTree> diskBTreeFactory,
             BloomFilterFactory bloomFilterFactory, double bloomFilterFalsePositiveRate,
-            IFileMapProvider diskFileMapProvider, IBinaryComparatorFactory[] rtreeCmpFactories,
-            IBinaryComparatorFactory[] btreeCmpFactories, ILinearizeComparatorFactory linearizer,
-            int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray, ILSMMergePolicy mergePolicy,
-            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-            int[] buddyBTreeFields, boolean durable, boolean isPointMBR) {
+            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeCmpFactories,
+            ILinearizeComparatorFactory linearizer, int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, int[] buddyBTreeFields, boolean durable, boolean isPointMBR) {
         super(ioManager, rtreeInteriorFrameFactory, rtreeLeafFrameFactory, btreeInteriorFrameFactory,
                 btreeLeafFrameFactory, fileNameManager,
                 new LSMRTreeDiskComponentFactory(diskRTreeFactory, diskBTreeFactory, bloomFilterFactory, null),
-                diskFileMapProvider, rtreeCmpFactories, btreeCmpFactories, linearizer, comparatorFields,
-                linearizerArray, bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback,
-                durable, isPointMBR, diskRTreeFactory.getBufferCache());
+                rtreeCmpFactories, btreeCmpFactories, linearizer, comparatorFields, linearizerArray,
+                bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback, durable, isPointMBR,
+                diskRTreeFactory.getBufferCache());
         this.buddyBTreeFields = buddyBTreeFields;
     }
 
@@ -137,9 +134,12 @@
         RTree rtree = component.getRTree();
         BTree btree = component.getBTree();
         BloomFilter bloomFilter = component.getBloomFilter();
-        rtree.deactivateCloseHandle();
-        btree.deactivateCloseHandle();
+        rtree.deactivate();
+        btree.deactivate();
         bloomFilter.deactivate();
+        rtree.purge();
+        btree.purge();
+        bloomFilter.purge();
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeFileManager.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeFileManager.java
index f9ee5c9..4d5eb5b 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeFileManager.java
@@ -37,11 +37,8 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.AbstractLSMIndexFileManager;
 import org.apache.hyracks.storage.am.lsm.common.impls.LSMComponentFileReferences;
 import org.apache.hyracks.storage.am.lsm.common.impls.TreeIndexFactory;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMRTreeFileManager extends AbstractLSMIndexFileManager {
-    public static final String RTREE_STRING = "r";
-    public static final String BTREE_STRING = "b";
 
     private final TreeIndexFactory<? extends ITreeIndex> rtreeFactory;
     private final TreeIndexFactory<? extends ITreeIndex> btreeFactory;
@@ -49,20 +46,20 @@
     private static FilenameFilter btreeFilter = new FilenameFilter() {
         @Override
         public boolean accept(File dir, String name) {
-            return !name.startsWith(".") && name.endsWith(BTREE_STRING);
+            return !name.startsWith(".") && name.endsWith(BTREE_SUFFIX);
         }
     };
 
     private static FilenameFilter rtreeFilter = new FilenameFilter() {
         @Override
         public boolean accept(File dir, String name) {
-            return !name.startsWith(".") && name.endsWith(RTREE_STRING);
+            return !name.startsWith(".") && name.endsWith(RTREE_SUFFIX);
         }
     };
 
-    public LSMRTreeFileManager(IIOManager ioManager, IFileMapProvider fileMapProvider, FileReference file,
+    public LSMRTreeFileManager(IIOManager ioManager, FileReference file,
             TreeIndexFactory<? extends ITreeIndex> rtreeFactory, TreeIndexFactory<? extends ITreeIndex> btreeFactory) {
-        super(ioManager, fileMapProvider, file, null);
+        super(ioManager, file, null);
         this.rtreeFactory = rtreeFactory;
         this.btreeFactory = btreeFactory;
     }
@@ -70,25 +67,25 @@
     @Override
     public LSMComponentFileReferences getRelFlushFileReference() throws HyracksDataException {
         String ts = getCurrentTimestamp();
-        String baseName = baseDir + ts + SPLIT_STRING + ts;
+        String baseName = baseDir + ts + DELIMITER + ts;
         // Begin timestamp and end timestamp are identical since it is a flush
-        return new LSMComponentFileReferences(createFlushFile(baseName + SPLIT_STRING + RTREE_STRING),
-                createFlushFile(baseName + SPLIT_STRING + BTREE_STRING),
-                createFlushFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        return new LSMComponentFileReferences(createFlushFile(baseName + DELIMITER + RTREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + BTREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
     public LSMComponentFileReferences getRelMergeFileReference(String firstFileName, String lastFileName)
             throws HyracksDataException {
-        String[] firstTimestampRange = firstFileName.split(SPLIT_STRING);
-        String[] lastTimestampRange = lastFileName.split(SPLIT_STRING);
+        String[] firstTimestampRange = firstFileName.split(DELIMITER);
+        String[] lastTimestampRange = lastFileName.split(DELIMITER);
 
-        String baseName = baseDir + firstTimestampRange[0] + SPLIT_STRING + lastTimestampRange[1];
+        String baseName = baseDir + firstTimestampRange[0] + DELIMITER + lastTimestampRange[1];
         // Get the range of timestamps by taking the earliest and the latest
         // timestamps
-        return new LSMComponentFileReferences(createMergeFile(baseName + SPLIT_STRING + RTREE_STRING),
-                createMergeFile(baseName + SPLIT_STRING + BTREE_STRING),
-                createMergeFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        return new LSMComponentFileReferences(createMergeFile(baseName + DELIMITER + RTREE_SUFFIX),
+                createMergeFile(baseName + DELIMITER + BTREE_SUFFIX),
+                createMergeFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
@@ -105,7 +102,7 @@
         cleanupAndGetValidFilesInternal(getCompoundFilter(transactionFilter, btreeFilter), btreeFactory, allBTreeFiles);
         HashSet<String> btreeFilesSet = new HashSet<>();
         for (ComparableFileName cmpFileName : allBTreeFiles) {
-            int index = cmpFileName.fileName.lastIndexOf(SPLIT_STRING);
+            int index = cmpFileName.fileName.lastIndexOf(DELIMITER);
             btreeFilesSet.add(cmpFileName.fileName.substring(0, index));
         }
         validateFiles(btreeFilesSet, allRTreeFiles, getCompoundFilter(transactionFilter, rtreeFilter), rtreeFactory);
@@ -203,19 +200,19 @@
     public LSMComponentFileReferences getNewTransactionFileReference() throws IOException {
         String ts = getCurrentTimestamp();
         // Create transaction lock file
-        Files.createFile(Paths.get(baseDir + TRANSACTION_PREFIX + ts));
+        Files.createFile(Paths.get(baseDir + TXN_PREFIX + ts));
 
-        String baseName = baseDir + ts + SPLIT_STRING + ts;
-        return new LSMComponentFileReferences(createFlushFile(baseName + SPLIT_STRING + RTREE_STRING),
-                createFlushFile(baseName + SPLIT_STRING + BTREE_STRING),
-                createFlushFile(baseName + SPLIT_STRING + BLOOM_FILTER_STRING));
+        String baseName = baseDir + ts + DELIMITER + ts;
+        return new LSMComponentFileReferences(createFlushFile(baseName + DELIMITER + RTREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + BTREE_SUFFIX),
+                createFlushFile(baseName + DELIMITER + BLOOM_FILTER_SUFFIX));
     }
 
     @Override
     public LSMComponentFileReferences getTransactionFileReferenceForCommit() throws HyracksDataException {
         FilenameFilter transactionFilter;
         File dir = new File(baseDir);
-        String[] files = dir.list(transactionFileNameFilter);
+        String[] files = dir.list(txnFileNameFilter);
         if (files.length == 0) {
             return null;
         }
@@ -239,11 +236,11 @@
         File bTreeFile = null;
         File bloomFilterFile = null;
         for (String fileName : files) {
-            if (fileName.endsWith(BTREE_STRING)) {
+            if (fileName.endsWith(BTREE_SUFFIX)) {
                 bTreeFile = new File(dir.getPath() + File.separator + fileName);
-            } else if (fileName.endsWith(RTREE_STRING)) {
+            } else if (fileName.endsWith(RTREE_SUFFIX)) {
                 rTreeFile = new File(dir.getPath() + File.separator + fileName);
-            } else if (fileName.endsWith(BLOOM_FILTER_STRING)) {
+            } else if (fileName.endsWith(BLOOM_FILTER_SUFFIX)) {
                 bloomFilterFile = new File(dir.getPath() + File.separator + fileName);
             } else {
                 throw new HyracksDataException("unrecognized file found = " + fileName);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuples.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuples.java
index ae72884..a5374c9 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuples.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuples.java
@@ -69,7 +69,6 @@
 import org.apache.hyracks.storage.common.ISearchOperationCallback;
 import org.apache.hyracks.storage.common.ISearchPredicate;
 import org.apache.hyracks.storage.common.MultiComparator;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMRTreeWithAntiMatterTuples extends AbstractLSMRTree {
     private static final ICursorFactory cursorFactory = opCtx -> new LSMRTreeWithAntiMatterTuplesSearchCursor(opCtx);
@@ -83,19 +82,18 @@
             ITreeIndexFrameFactory btreeInteriorFrameFactory, ITreeIndexFrameFactory btreeLeafFrameFactory,
             ILSMIndexFileManager fileManager, TreeIndexFactory<RTree> diskRTreeFactory,
             TreeIndexFactory<RTree> bulkLoadRTreeFactory, IComponentFilterHelper filterHelper,
-            ILSMComponentFilterFrameFactory filterFrameFactory, LSMComponentFilterManager filterManager,
-            IFileMapProvider diskFileMapProvider, int fieldCount, IBinaryComparatorFactory[] rtreeCmpFactories,
-            IBinaryComparatorFactory[] btreeComparatorFactories, ILinearizeComparatorFactory linearizer,
-            int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray, ILSMMergePolicy mergePolicy,
-            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-            int[] rtreeFields, int[] filterFields, boolean durable, boolean isPointMBR) throws HyracksDataException {
+            ILSMComponentFilterFrameFactory filterFrameFactory, LSMComponentFilterManager filterManager, int fieldCount,
+            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeComparatorFactories,
+            ILinearizeComparatorFactory linearizer, int[] comparatorFields, IBinaryComparatorFactory[] linearizerArray,
+            ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
+            ILSMIOOperationCallback ioOpCallback, int[] rtreeFields, int[] filterFields, boolean durable,
+            boolean isPointMBR) throws HyracksDataException {
         super(ioManager, virtualBufferCaches, rtreeInteriorFrameFactory, rtreeLeafFrameFactory,
                 btreeInteriorFrameFactory, btreeLeafFrameFactory, fileManager,
-                new LSMRTreeWithAntiMatterTuplesDiskComponentFactory(diskRTreeFactory, filterHelper),
-                diskFileMapProvider, fieldCount, rtreeCmpFactories, btreeComparatorFactories, linearizer,
-                comparatorFields, linearizerArray, 0, mergePolicy, opTracker, ioScheduler, ioOpCallback, filterHelper,
-                filterFrameFactory, filterManager, rtreeFields, filterFields, durable, isPointMBR,
-                diskRTreeFactory.getBufferCache());
+                new LSMRTreeWithAntiMatterTuplesDiskComponentFactory(diskRTreeFactory, filterHelper), fieldCount,
+                rtreeCmpFactories, btreeComparatorFactories, linearizer, comparatorFields, linearizerArray, 0,
+                mergePolicy, opTracker, ioScheduler, ioOpCallback, filterHelper, filterFrameFactory, filterManager,
+                rtreeFields, filterFields, durable, isPointMBR, diskRTreeFactory.getBufferCache());
         bulkLoaComponentFactory =
                 new LSMRTreeWithAntiMatterTuplesDiskComponentFactory(bulkLoadRTreeFactory, filterHelper);
     }
@@ -108,7 +106,8 @@
     @Override
     protected void deactivateDiskComponent(ILSMDiskComponent c) throws HyracksDataException {
         RTree rtree = ((LSMRTreeDiskComponent) c).getRTree();
-        rtree.deactivateCloseHandle();
+        rtree.deactivate();
+        rtree.purge();
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuplesFileManager.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuplesFileManager.java
index fd1aa71..e39033f 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuplesFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/LSMRTreeWithAntiMatterTuplesFileManager.java
@@ -24,13 +24,11 @@
 import org.apache.hyracks.storage.am.common.api.ITreeIndex;
 import org.apache.hyracks.storage.am.lsm.common.impls.AbstractLSMIndexFileManager;
 import org.apache.hyracks.storage.am.lsm.common.impls.TreeIndexFactory;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMRTreeWithAntiMatterTuplesFileManager extends AbstractLSMIndexFileManager {
 
-    public LSMRTreeWithAntiMatterTuplesFileManager(IIOManager ioManager, IFileMapProvider fileMapProvider,
-            FileReference file,
+    public LSMRTreeWithAntiMatterTuplesFileManager(IIOManager ioManager, FileReference file,
             TreeIndexFactory<? extends ITreeIndex> rtreeFactory) {
-        super(ioManager, fileMapProvider, file, rtreeFactory);
+        super(ioManager, file, rtreeFactory);
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/RTreeFactory.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/RTreeFactory.java
index 8901c86..55e70b2 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/RTreeFactory.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/RTreeFactory.java
@@ -27,25 +27,24 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.TreeIndexFactory;
 import org.apache.hyracks.storage.am.rtree.impls.RTree;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class RTreeFactory extends TreeIndexFactory<RTree> {
 
     private final boolean isPointMBR;
 
-    public RTreeFactory(IIOManager ioManager, IBufferCache bufferCache, IFileMapProvider fileMapProvider,
+    public RTreeFactory(IIOManager ioManager, IBufferCache bufferCache,
             IMetadataPageManagerFactory freePageManagerFactory, ITreeIndexFrameFactory interiorFrameFactory,
             ITreeIndexFrameFactory leafFrameFactory, IBinaryComparatorFactory[] cmpFactories, int fieldCount,
             boolean isPointMBR) {
-        super(ioManager, bufferCache, fileMapProvider, freePageManagerFactory, interiorFrameFactory, leafFrameFactory,
-                cmpFactories, fieldCount);
+        super(ioManager, bufferCache, freePageManagerFactory, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                fieldCount);
         this.isPointMBR = isPointMBR;
     }
 
     @Override
     public RTree createIndexInstance(FileReference file) {
-        return new RTree(bufferCache, fileMapProvider, freePageManagerFactory.createPageManager(bufferCache),
-                interiorFrameFactory, leafFrameFactory, cmpFactories, fieldCount, file, isPointMBR);
+        return new RTree(bufferCache, freePageManagerFactory.createPageManager(bufferCache), interiorFrameFactory,
+                leafFrameFactory, cmpFactories, fieldCount, file, isPointMBR);
     }
 
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/utils/LSMRTreeUtils.java b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/utils/LSMRTreeUtils.java
index e37fa4a..48cd589 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/utils/LSMRTreeUtils.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/utils/LSMRTreeUtils.java
@@ -68,15 +68,14 @@
 import org.apache.hyracks.storage.am.rtree.linearize.ZCurveDoubleComparatorFactory;
 import org.apache.hyracks.storage.am.rtree.linearize.ZCurveIntComparatorFactory;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class LSMRTreeUtils {
     public static LSMRTree createLSMTree(IIOManager ioManager, List<IVirtualBufferCache> virtualBufferCaches,
-            FileReference file, IBufferCache diskBufferCache, IFileMapProvider diskFileMapProvider,
-            ITypeTraits[] typeTraits, IBinaryComparatorFactory[] rtreeCmpFactories,
-            IBinaryComparatorFactory[] btreeCmpFactories, IPrimitiveValueProviderFactory[] valueProviderFactories,
-            RTreePolicyType rtreePolicyType, double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy,
-            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
+            FileReference file, IBufferCache diskBufferCache, ITypeTraits[] typeTraits,
+            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeCmpFactories,
+            IPrimitiveValueProviderFactory[] valueProviderFactories, RTreePolicyType rtreePolicyType,
+            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
+            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
             ILinearizeComparatorFactory linearizeCmpFactory, int[] rtreeFields, int[] buddyBTreeFields,
             ITypeTraits[] filterTypeTraits, IBinaryComparatorFactory[] filterCmpFactories, int[] filterFields,
             boolean durable, boolean isPointMBR, IMetadataPageManagerFactory freePageManagerFactory)
@@ -104,12 +103,10 @@
                 valueProviderFactories, rtreePolicyType, isPointMBR);
         ITreeIndexFrameFactory btreeInteriorFrameFactory = new BTreeNSMInteriorFrameFactory(btreeTupleWriterFactory);
         ITreeIndexFrameFactory btreeLeafFrameFactory = new BTreeNSMLeafFrameFactory(btreeTupleWriterFactory);
-        TreeIndexFactory<RTree> diskRTreeFactory = new RTreeFactory(ioManager, diskBufferCache, diskFileMapProvider,
-                freePageManagerFactory, rtreeInteriorFrameFactory, rtreeLeafFrameFactory, rtreeCmpFactories,
-                typeTraits.length, isPointMBR);
-        TreeIndexFactory<BTree> diskBTreeFactory =
-                new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider, freePageManagerFactory,
-                        btreeInteriorFrameFactory, btreeLeafFrameFactory, btreeCmpFactories, btreeTypeTraits.length);
+        TreeIndexFactory<RTree> diskRTreeFactory = new RTreeFactory(ioManager, diskBufferCache, freePageManagerFactory,
+                rtreeInteriorFrameFactory, rtreeLeafFrameFactory, rtreeCmpFactories, typeTraits.length, isPointMBR);
+        TreeIndexFactory<BTree> diskBTreeFactory = new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory,
+                btreeInteriorFrameFactory, btreeLeafFrameFactory, btreeCmpFactories, btreeTypeTraits.length);
 
         int[] comparatorFields = { 0 };
         IBinaryComparatorFactory[] linearizerArray = { linearizeCmpFactory };
@@ -118,8 +115,7 @@
         for (int i = 0; i < btreeCmpFactories.length; i++) {
             bloomFilterKeyFields[i] = i;
         }
-        BloomFilterFactory bloomFilterFactory =
-                new BloomFilterFactory(diskBufferCache, diskFileMapProvider, bloomFilterKeyFields);
+        BloomFilterFactory bloomFilterFactory = new BloomFilterFactory(diskBufferCache, bloomFilterKeyFields);
 
         ComponentFilterHelper filterHelper = null;
         LSMComponentFilterFrameFactory filterFrameFactory = null;
@@ -131,19 +127,19 @@
             filterManager = new LSMComponentFilterManager(filterFrameFactory);
         }
         ILSMIndexFileManager fileNameManager =
-                new LSMRTreeFileManager(ioManager, diskFileMapProvider, file, diskRTreeFactory, diskBTreeFactory);
+                new LSMRTreeFileManager(ioManager, file, diskRTreeFactory, diskBTreeFactory);
         return new LSMRTree(ioManager, virtualBufferCaches, rtreeInteriorFrameFactory, rtreeLeafFrameFactory,
                 btreeInteriorFrameFactory, btreeLeafFrameFactory, fileNameManager, diskRTreeFactory, diskBTreeFactory,
                 bloomFilterFactory, filterHelper, filterFrameFactory, filterManager, bloomFilterFalsePositiveRate,
-                diskFileMapProvider, typeTraits.length, rtreeCmpFactories, btreeCmpFactories, linearizeCmpFactory,
-                comparatorFields, linearizerArray, mergePolicy, opTracker, ioScheduler, ioOpCallback, rtreeFields,
-                buddyBTreeFields, filterFields, durable, isPointMBR);
+                typeTraits.length, rtreeCmpFactories, btreeCmpFactories, linearizeCmpFactory, comparatorFields,
+                linearizerArray, mergePolicy, opTracker, ioScheduler, ioOpCallback, rtreeFields, buddyBTreeFields,
+                filterFields, durable, isPointMBR);
     }
 
     public static LSMRTreeWithAntiMatterTuples createLSMTreeWithAntiMatterTuples(IIOManager ioManager,
             List<IVirtualBufferCache> virtualBufferCaches, FileReference file, IBufferCache diskBufferCache,
-            IFileMapProvider diskFileMapProvider, ITypeTraits[] typeTraits,
-            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeComparatorFactories,
+            ITypeTraits[] typeTraits, IBinaryComparatorFactory[] rtreeCmpFactories,
+            IBinaryComparatorFactory[] btreeComparatorFactories,
             IPrimitiveValueProviderFactory[] valueProviderFactories, RTreePolicyType rtreePolicyType,
             ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler,
             ILSMIOOperationCallback ioOpCallback, ILinearizeComparatorFactory linearizerCmpFactory, int[] rtreeFields,
@@ -184,13 +180,12 @@
 
         ITreeIndexFrameFactory copyTupleLeafFrameFactory = new RTreeNSMLeafFrameFactory(
                 rtreeLeafFrameCopyTupleWriterFactory, valueProviderFactories, rtreePolicyType, isPointMBR);
-        TreeIndexFactory<RTree> diskRTreeFactory = new RTreeFactory(ioManager, diskBufferCache, diskFileMapProvider,
-                freePageManagerFactory, rtreeInteriorFrameFactory, copyTupleLeafFrameFactory, rtreeCmpFactories,
-                typeTraits.length, isPointMBR);
+        TreeIndexFactory<RTree> diskRTreeFactory = new RTreeFactory(ioManager, diskBufferCache, freePageManagerFactory,
+                rtreeInteriorFrameFactory, copyTupleLeafFrameFactory, rtreeCmpFactories, typeTraits.length, isPointMBR);
 
-        TreeIndexFactory<RTree> bulkLoadRTreeFactory = new RTreeFactory(ioManager, diskBufferCache, diskFileMapProvider,
-                freePageManagerFactory, rtreeInteriorFrameFactory, rtreeLeafFrameBulkLoadFactory, rtreeCmpFactories,
-                typeTraits.length, isPointMBR);
+        TreeIndexFactory<RTree> bulkLoadRTreeFactory =
+                new RTreeFactory(ioManager, diskBufferCache, freePageManagerFactory, rtreeInteriorFrameFactory,
+                        rtreeLeafFrameBulkLoadFactory, rtreeCmpFactories, typeTraits.length, isPointMBR);
 
         // The first field is for the sorted curve (e.g. Hilbert curve), and the
         // second field is for the primary key.
@@ -219,21 +214,20 @@
             filterManager = new LSMComponentFilterManager(filterFrameFactory);
         }
         ILSMIndexFileManager fileNameManager =
-                new LSMRTreeWithAntiMatterTuplesFileManager(ioManager, diskFileMapProvider, file, diskRTreeFactory);
+                new LSMRTreeWithAntiMatterTuplesFileManager(ioManager, file, diskRTreeFactory);
         return new LSMRTreeWithAntiMatterTuples(ioManager, virtualBufferCaches, rtreeInteriorFrameFactory,
                 rtreeLeafFrameFactory, btreeInteriorFrameFactory, btreeLeafFrameFactory, fileNameManager,
                 diskRTreeFactory, bulkLoadRTreeFactory, filterHelper, filterFrameFactory, filterManager,
-                diskFileMapProvider, typeTraits.length, rtreeCmpFactories, btreeComparatorFactories,
-                linearizerCmpFactory, comparatorFields, linearizerArray, mergePolicy, opTracker, ioScheduler,
-                ioOpCallback, rtreeFields, filterFields, durable, isPointMBR);
+                typeTraits.length, rtreeCmpFactories, btreeComparatorFactories, linearizerCmpFactory, comparatorFields,
+                linearizerArray, mergePolicy, opTracker, ioScheduler, ioOpCallback, rtreeFields, filterFields, durable,
+                isPointMBR);
     }
 
     public static ExternalRTree createExternalRTree(IIOManager ioManager, FileReference file,
-            IBufferCache diskBufferCache, IFileMapProvider diskFileMapProvider, ITypeTraits[] typeTraits,
-            IBinaryComparatorFactory[] rtreeCmpFactories, IBinaryComparatorFactory[] btreeCmpFactories,
-            IPrimitiveValueProviderFactory[] valueProviderFactories, RTreePolicyType rtreePolicyType,
-            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
-            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
+            IBufferCache diskBufferCache, ITypeTraits[] typeTraits, IBinaryComparatorFactory[] rtreeCmpFactories,
+            IBinaryComparatorFactory[] btreeCmpFactories, IPrimitiveValueProviderFactory[] valueProviderFactories,
+            RTreePolicyType rtreePolicyType, double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy,
+            ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
             ILinearizeComparatorFactory linearizeCmpFactory, int[] buddyBTreeFields, boolean durable,
             boolean isPointMBR, IMetadataPageManagerFactory freePageManagerFactory) throws HyracksDataException {
 
@@ -260,12 +254,10 @@
                 valueProviderFactories, rtreePolicyType, isPointMBR);
         ITreeIndexFrameFactory btreeInteriorFrameFactory = new BTreeNSMInteriorFrameFactory(btreeTupleWriterFactory);
         ITreeIndexFrameFactory btreeLeafFrameFactory = new BTreeNSMLeafFrameFactory(btreeTupleWriterFactory);
-        TreeIndexFactory<RTree> diskRTreeFactory = new RTreeFactory(ioManager, diskBufferCache, diskFileMapProvider,
-                freePageManagerFactory, rtreeInteriorFrameFactory, rtreeLeafFrameFactory, rtreeCmpFactories,
-                typeTraits.length, isPointMBR);
-        TreeIndexFactory<BTree> diskBTreeFactory =
-                new BTreeFactory(ioManager, diskBufferCache, diskFileMapProvider, freePageManagerFactory,
-                        btreeInteriorFrameFactory, btreeLeafFrameFactory, btreeCmpFactories, btreeTypeTraits.length);
+        TreeIndexFactory<RTree> diskRTreeFactory = new RTreeFactory(ioManager, diskBufferCache, freePageManagerFactory,
+                rtreeInteriorFrameFactory, rtreeLeafFrameFactory, rtreeCmpFactories, typeTraits.length, isPointMBR);
+        TreeIndexFactory<BTree> diskBTreeFactory = new BTreeFactory(ioManager, diskBufferCache, freePageManagerFactory,
+                btreeInteriorFrameFactory, btreeLeafFrameFactory, btreeCmpFactories, btreeTypeTraits.length);
         int[] comparatorFields = { 0 };
         IBinaryComparatorFactory[] linearizerArray = { linearizeCmpFactory };
 
@@ -273,17 +265,15 @@
         for (int i = 0; i < btreeCmpFactories.length; i++) {
             bloomFilterKeyFields[i] = i;
         }
-        BloomFilterFactory bloomFilterFactory =
-                new BloomFilterFactory(diskBufferCache, diskFileMapProvider, bloomFilterKeyFields);
+        BloomFilterFactory bloomFilterFactory = new BloomFilterFactory(diskBufferCache, bloomFilterKeyFields);
 
         ILSMIndexFileManager fileNameManager =
-                new LSMRTreeFileManager(ioManager, diskFileMapProvider, file, diskRTreeFactory, diskBTreeFactory);
-        ExternalRTree lsmTree = new ExternalRTree(ioManager, rtreeInteriorFrameFactory, rtreeLeafFrameFactory,
-                btreeInteriorFrameFactory, btreeLeafFrameFactory, fileNameManager, diskRTreeFactory, diskBTreeFactory,
-                bloomFilterFactory, bloomFilterFalsePositiveRate, diskFileMapProvider, typeTraits.length,
-                rtreeCmpFactories, btreeCmpFactories, linearizeCmpFactory, comparatorFields, linearizerArray,
-                mergePolicy, opTracker, ioScheduler, ioOpCallback, buddyBTreeFields, durable, isPointMBR);
-        return lsmTree;
+                new LSMRTreeFileManager(ioManager, file, diskRTreeFactory, diskBTreeFactory);
+        return new ExternalRTree(ioManager, rtreeInteriorFrameFactory, rtreeLeafFrameFactory, btreeInteriorFrameFactory,
+                btreeLeafFrameFactory, fileNameManager, diskRTreeFactory, diskBTreeFactory, bloomFilterFactory,
+                bloomFilterFalsePositiveRate, typeTraits.length, rtreeCmpFactories, btreeCmpFactories,
+                linearizeCmpFactory, comparatorFields, linearizerArray, mergePolicy, opTracker, ioScheduler,
+                ioOpCallback, buddyBTreeFields, durable, isPointMBR);
     }
 
     public static ILinearizeComparatorFactory proposeBestLinearizer(ITypeTraits[] typeTraits, int numKeyFields)
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/dataflow/RTreeResource.java b/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/dataflow/RTreeResource.java
index 5dc0a4e..df4fbf2 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/dataflow/RTreeResource.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/dataflow/RTreeResource.java
@@ -59,9 +59,8 @@
     public IIndex createInstance(INCServiceContext ctx) throws HyracksDataException {
         IIOManager ioManager = ctx.getIoManager();
         FileReference resourceRef = ioManager.resolve(path);
-        return RTreeUtils.createRTree(storageManager.getBufferCache(ctx), storageManager.getFileMapProvider(ctx),
-                typeTraits, valueProviderFactories, comparatorFactories, rtreePolicyType, resourceRef, false,
-                pageManagerFactory);
+        return RTreeUtils.createRTree(storageManager.getBufferCache(ctx), typeTraits, valueProviderFactories,
+                comparatorFactories, rtreePolicyType, resourceRef, false, pageManagerFactory);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/impls/RTree.java b/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/impls/RTree.java
index 1160da7..1750067 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/impls/RTree.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/impls/RTree.java
@@ -60,7 +60,6 @@
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class RTree extends AbstractTreeIndex {
 
@@ -70,11 +69,10 @@
     private final int maxTupleSize;
     private final boolean isPointMBR; // used for reducing storage space to store point objects.
 
-    public RTree(IBufferCache bufferCache, IFileMapProvider fileMapProvider, IPageManager freePageManager,
-            ITreeIndexFrameFactory interiorFrameFactory, ITreeIndexFrameFactory leafFrameFactory,
-            IBinaryComparatorFactory[] cmpFactories, int fieldCount, FileReference file, boolean isPointMBR) {
-        super(bufferCache, fileMapProvider, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
-                fieldCount, file);
+    public RTree(IBufferCache bufferCache, IPageManager freePageManager, ITreeIndexFrameFactory interiorFrameFactory,
+            ITreeIndexFrameFactory leafFrameFactory, IBinaryComparatorFactory[] cmpFactories, int fieldCount,
+            FileReference file, boolean isPointMBR) {
+        super(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories, fieldCount, file);
         globalNsn = new AtomicLong();
         ITreeIndexFrame leafFrame = leafFrameFactory.createFrame();
         ITreeIndexFrame interiorFrame = interiorFrameFactory.createFrame();
@@ -101,7 +99,7 @@
     public void printTree(int pageId, ICachedPage parent, boolean unpin, IRTreeLeafFrame leafFrame,
             IRTreeInteriorFrame interiorFrame, byte treeHeight, ISerializerDeserializer[] keySerdes,
             StringBuilder strBuilder, MultiComparator cmp) throws Exception {
-        ICachedPage node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+        ICachedPage node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
         node.acquireReadLatch();
         try {
             if (parent != null && unpin == true) {
@@ -171,7 +169,7 @@
 
             while (true) {
                 if (!writeLatched) {
-                    node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+                    node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
                     ctx.getInteriorFrame().setPage(node);
                     isLeaf = ctx.getInteriorFrame().isLeaf();
                     if (isLeaf) {
@@ -229,7 +227,7 @@
                             readLatched = false;
                             bufferCache.unpin(node);
 
-                            node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+                            node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
                             node.acquireWriteLatch();
                             writeLatched = true;
                             ctx.getInteriorFrame().setPage(node);
@@ -345,7 +343,8 @@
 
             case INSUFFICIENT_SPACE: {
                 int rightPageId = freePageManager.takePage(ctx.getMetaFrame());
-                ICachedPage rightNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, rightPageId), true);
+                ICachedPage rightNode =
+                        bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), rightPageId), true);
                 rightNode.acquireWriteLatch();
 
                 try {
@@ -390,7 +389,7 @@
                 if (pageId == rootPage) {
                     int newLeftId = freePageManager.takePage(ctx.getMetaFrame());
                     ICachedPage newLeftNode =
-                            bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, newLeftId), true);
+                            bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), newLeftId), true);
                     newLeftNode.acquireWriteLatch();
                     succeeded = false;
                     try {
@@ -448,7 +447,7 @@
         boolean succeeded = false;
         boolean writeLatched = false;
         int parentId = ctx.getPathList().getLastPageId();
-        ICachedPage parentNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, parentId), false);
+        ICachedPage parentNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), parentId), false);
         parentNode.acquireWriteLatch();
         writeLatched = true;
         ctx.getInteriorFrame().setPage(parentNode);
@@ -474,7 +473,7 @@
                     }
 
                     parentId = rightPage;
-                    parentNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, parentId), false);
+                    parentNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), parentId), false);
                     parentNode.acquireWriteLatch();
                     writeLatched = true;
                     ctx.getInteriorFrame().setPage(parentNode);
@@ -528,7 +527,7 @@
                 pageId = ctx.getTraverseList().getFirstPageId();
                 parentIndex = ctx.getTraverseList().getFirstPageIndex();
 
-                node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+                node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
                 node.acquireReadLatch();
                 readLatched = true;
                 ctx.getInteriorFrame().setPage(node);
@@ -611,7 +610,7 @@
                 int pageId = ctx.getPathList().getLastPageId();
                 long parentLsn = ctx.getPathList().getLastPageLsn();
                 ctx.getPathList().moveLast();
-                node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+                node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
                 node.acquireReadLatch();
                 readLatched = true;
                 ctx.getInteriorFrame().setPage(node);
@@ -644,7 +643,7 @@
                         readLatched = false;
                         bufferCache.unpin(node);
 
-                        node = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, pageId), false);
+                        node = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), pageId), false);
                         node.acquireWriteLatch();
                         writeLatched = true;
                         ctx.getLeafFrame().setPage(node);
@@ -714,7 +713,7 @@
         ctx.setCursor(cursor);
 
         cursor.setBufferCache(bufferCache);
-        cursor.setFileId(fileId);
+        cursor.setFileId(getFileId());
         ctx.getCursorInitialState().setRootPage(rootPage);
         ctx.getCursor().open(ctx.getCursorInitialState(), searchPred);
     }
@@ -733,11 +732,11 @@
         int currentPageId = bulkloadLeafStart;
         int maxPageId = freePageManager.getMaxPageId(ctx.getMetaFrame());
 
-        ICachedPage page = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, currentPageId), false);
+        ICachedPage page = bufferCache.pin(BufferedFileHandle.getDiskPageId(getFileId(), currentPageId), false);
         page.acquireReadLatch();
         try {
             cursor.setBufferCache(bufferCache);
-            cursor.setFileId(fileId);
+            cursor.setFileId(getFileId());
             cursor.setCurrentPageId(currentPageId);
             cursor.setMaxPageId(maxPageId);
             ctx.getCursorInitialState().setOriginialKeyComparator(ctx.getCmp());
@@ -938,8 +937,8 @@
                     }
 
                     pagesToWrite.clear();
-                    leafFrontier.page =
-                            bufferCache.confiscatePage(BufferedFileHandle.getDiskPageId(fileId, leafFrontier.pageId));
+                    leafFrontier.page = bufferCache
+                            .confiscatePage(BufferedFileHandle.getDiskPageId(getFileId(), leafFrontier.pageId));
                     leafFrame.setPage(leafFrontier.page);
                     leafFrame.initBuffer((byte) 0);
 
@@ -992,7 +991,7 @@
 
                     int finalPageId = freePageManager.takePage(metaFrame);
                     n.pageId = finalPageId;
-                    bufferCache.setPageDiskId(n.page, BufferedFileHandle.getDiskPageId(fileId, finalPageId));
+                    bufferCache.setPageDiskId(n.page, BufferedFileHandle.getDiskPageId(getFileId(), finalPageId));
                     //else we are looking at a leaf
                 }
                 //set next guide MBR
@@ -1055,7 +1054,7 @@
                 } else {
                     prevNodeFrontierPages.set(level, finalPageId);
                 }
-                bufferCache.setPageDiskId(frontier.page, BufferedFileHandle.getDiskPageId(fileId, finalPageId));
+                bufferCache.setPageDiskId(frontier.page, BufferedFileHandle.getDiskPageId(getFileId(), finalPageId));
                 pagesToWrite.add(frontier.page);
 
                 lowerFrame = prevInteriorFrame;
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/util/RTreeUtils.java b/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/util/RTreeUtils.java
index a8e668b..650b6a8 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/util/RTreeUtils.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-am-rtree/src/main/java/org/apache/hyracks/storage/am/rtree/util/RTreeUtils.java
@@ -36,23 +36,20 @@
 import org.apache.hyracks.storage.am.rtree.tuples.RTreeTypeAwareTupleWriterFactory;
 import org.apache.hyracks.storage.common.MultiComparator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class RTreeUtils {
-    public static RTree createRTree(IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            ITypeTraits[] typeTraits, IPrimitiveValueProviderFactory[] valueProviderFactories,
-            IBinaryComparatorFactory[] cmpFactories, RTreePolicyType rtreePolicyType, FileReference file,
-            boolean isPointMBR, IPageManagerFactory pageManagerFactory) {
+    public static RTree createRTree(IBufferCache bufferCache, ITypeTraits[] typeTraits,
+            IPrimitiveValueProviderFactory[] valueProviderFactories, IBinaryComparatorFactory[] cmpFactories,
+            RTreePolicyType rtreePolicyType, FileReference file, boolean isPointMBR,
+            IPageManagerFactory pageManagerFactory) {
 
         RTreeTypeAwareTupleWriterFactory tupleWriterFactory = new RTreeTypeAwareTupleWriterFactory(typeTraits);
         ITreeIndexFrameFactory interiorFrameFactory = new RTreeNSMInteriorFrameFactory(tupleWriterFactory,
                 valueProviderFactories, rtreePolicyType, isPointMBR);
-        ITreeIndexFrameFactory leafFrameFactory = new RTreeNSMLeafFrameFactory(tupleWriterFactory,
-                valueProviderFactories, rtreePolicyType, isPointMBR);
-        RTree rtree = new RTree(bufferCache, fileMapProvider, pageManagerFactory.createPageManager(bufferCache),
-                interiorFrameFactory, leafFrameFactory,
-                cmpFactories, typeTraits.length, file, isPointMBR);
-        return rtree;
+        ITreeIndexFrameFactory leafFrameFactory =
+                new RTreeNSMLeafFrameFactory(tupleWriterFactory, valueProviderFactories, rtreePolicyType, isPointMBR);
+        return new RTree(bufferCache, pageManagerFactory.createPageManager(bufferCache), interiorFrameFactory,
+                leafFrameFactory, cmpFactories, typeTraits.length, file, isPointMBR);
     }
 
     // Creates a new MultiComparator by constructing new IBinaryComparators.
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/IStorageManager.java b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/IStorageManager.java
index 68f4cbb..dfc2f41 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/IStorageManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/IStorageManager.java
@@ -22,7 +22,6 @@
 
 import org.apache.hyracks.api.application.INCServiceContext;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.storage.common.file.IResourceIdFactory;
 
 /**
@@ -39,13 +38,6 @@
     /**
      * @param ctx
      *            the nc service context
-     * @return the file map provider {@link org.apache.hyracks.storage.common.file.IFileMapProvider}
-     */
-    IFileMapProvider getFileMapProvider(INCServiceContext ctx);
-
-    /**
-     * @param ctx
-     *            the nc service context
      * @return the local resource repository {@link org.apache.hyracks.storage.am.common.build.ILocalResourceRepository}
      */
     ILocalResourceRepository getLocalResourceRepository(INCServiceContext ctx);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/BufferCache.java b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/BufferCache.java
index 8391e5c..d4e6c77 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/BufferCache.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/BufferCache.java
@@ -24,12 +24,10 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Queue;
-import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.Executor;
@@ -47,6 +45,7 @@
 import org.apache.hyracks.api.io.IIOManager;
 import org.apache.hyracks.api.lifecycle.ILifeCycleComponent;
 import org.apache.hyracks.api.replication.IIOReplicationManager;
+import org.apache.hyracks.api.util.IoUtil;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
 import org.apache.hyracks.storage.common.file.IFileMapManager;
 
@@ -108,7 +107,7 @@
         closed = false;
 
         fifoWriter = new AsyncFIFOPageQueueManager(this);
-        if ( DEBUG ) {
+        if (DEBUG) {
             confiscatedPages = new ArrayList<>();
             confiscatedPagesOwner = new HashMap<>();
             confiscateLock = new ReentrantLock();
@@ -218,7 +217,7 @@
             cPage.valid = true;
         }
         pageReplacementStrategy.notifyCachePageAccess(cPage);
-        if (DEBUG){
+        if (DEBUG) {
             pinnedPageOwner.put(cPage, Thread.currentThread().getStackTrace());
         }
         return cPage;
@@ -335,9 +334,9 @@
         }
         int victimHash = hash(victim.dpid);
         if (victimHash == hash) {
-        /*
-         * Case 2a.
-         */
+            /*
+             * Case 2a.
+             */
             bucket.bucketLock.lock();
             try {
                 if (!victim.pinCount.compareAndSet(0, 1)) {
@@ -372,9 +371,9 @@
             }
             return victim;
         } else {
-        /*
-         * Case 2b.
-         */
+            /*
+             * Case 2b.
+             */
             CacheBucket victimBucket = pageMap[victimHash];
             if (victimHash < hash) {
                 victimBucket.bucketLock.lock();
@@ -475,7 +474,7 @@
             }
         }
         buffer.append("Number of cached pages: ").append(nCachedPages).append('\n');
-        if (DEBUG){
+        if (DEBUG) {
             confiscateLock.lock();
             try {
                 buffer.append("Number of confiscated pages: ").append(confiscatedPages.size()).append('\n');
@@ -487,29 +486,28 @@
     }
 
     @Override
-    public boolean isClean(){
+    public boolean isClean() {
         List<Long> reachableDpids = new LinkedList<>();
         synchronized (cachedPages) {
             for (ICachedPageInternal internalPage : cachedPages) {
-            CachedPage c = (CachedPage) internalPage;
-                if (c.confiscated() ||
-                        c.latch.getReadLockCount() != 0 || c.latch.getWriteHoldCount() != 0) {
+                CachedPage c = (CachedPage) internalPage;
+                if (c.confiscated() || c.latch.getReadLockCount() != 0 || c.latch.getWriteHoldCount() != 0) {
                     return false;
                 }
-                if (c.valid){
+                if (c.valid) {
                     reachableDpids.add(c.dpid);
                 }
             }
         }
-        for(Long l: reachableDpids){
-            if (!canFindValidCachedPage(l)){
+        for (Long l : reachableDpids) {
+            if (!canFindValidCachedPage(l)) {
                 return false;
             }
         }
         return true;
     }
 
-    private boolean canFindValidCachedPage(long dpid){
+    private boolean canFindValidCachedPage(long dpid) {
         int hash = hash(dpid);
         CachedPage cPage = null;
         CacheBucket bucket = pageMap[hash];
@@ -572,14 +570,16 @@
     }
 
     BufferedFileHandle getFileInfo(int fileId) throws HyracksDataException {
+        BufferedFileHandle fInfo;
         synchronized (fileInfoMap) {
-            BufferedFileHandle fInfo = fileInfoMap.get(fileId);
-            if (fInfo == null) {
-                throw new HyracksDataException("No such file mapped");
-            }
-            return fInfo;
+            fInfo = fileInfoMap.get(fileId);
         }
+        if (fInfo == null) {
+            throw new HyracksDataException("No such file mapped");
+        }
+        return fInfo;
     }
+
     private BufferCacheHeaderHelper checkoutHeaderHelper() {
         BufferCacheHeaderHelper helper = headerPageCache.poll();
         if (helper == null) {
@@ -609,8 +609,8 @@
                             getOffsetForPage(BufferedFileHandle.getPageId(cPage.dpid)),
                             header.prepareWrite(cPage, buf));
 
-                    if (bytesWritten !=
-                            (contiguousLargePages ? pageSize * (totalPages - 1) : 0) + getPageSizeWithHeader()) {
+                    if (bytesWritten != (contiguousLargePages ? pageSize * (totalPages - 1) : 0)
+                            + getPageSizeWithHeader()) {
                         throw new HyracksDataException("Failed to write completely: " + bytesWritten);
                     }
                 } finally {
@@ -636,7 +636,6 @@
         }
     }
 
-
     private int hash(long dpid) {
         int hashValue = (int) dpid ^ (Integer.reverse((int) (dpid >>> 32)) >>> 1);
         return hashValue % pageMap.length;
@@ -790,16 +789,42 @@
     }
 
     @Override
-    public void createFile(FileReference fileRef) throws HyracksDataException {
+    public int createFile(FileReference fileRef) throws HyracksDataException {
         if (LOGGER.isLoggable(fileOpsLevel)) {
             LOGGER.log(fileOpsLevel, "Creating file: " + fileRef + " in cache: " + this);
         }
-        synchronized (fileInfoMap) {
-            fileMapManager.registerFile(fileRef);
+        IoUtil.create(fileRef);
+        try {
+            return fileMapManager.registerFile(fileRef);
+        } catch (Exception e) {
+            // If file registration failed for any reason, we need to undo the file creation
+            try {
+                IoUtil.delete(fileRef);
+            } catch (Exception deleteException) {
+                e.addSuppressed(deleteException);
+            }
+            throw HyracksDataException.create(e);
         }
     }
 
     @Override
+    public int openFile(FileReference fileRef) throws HyracksDataException {
+        if (LOGGER.isLoggable(fileOpsLevel)) {
+            LOGGER.log(fileOpsLevel, "Opening file: " + fileRef + " in cache: " + this);
+        }
+        int fileId;
+        synchronized (fileInfoMap) {
+            if (fileMapManager.isMapped(fileRef)) {
+                fileId = fileMapManager.lookupFileId(fileRef);
+            } else {
+                fileId = fileMapManager.registerFile(fileRef);
+            }
+            openFile(fileId);
+        }
+        return fileId;
+    }
+
+    @Override
     public void openFile(int fileId) throws HyracksDataException {
         if (LOGGER.isLoggable(fileOpsLevel)) {
             LOGGER.log(fileOpsLevel, "Opening file: " + fileId + " in cache: " + this);
@@ -808,10 +833,9 @@
             BufferedFileHandle fInfo;
             fInfo = fileInfoMap.get(fileId);
             if (fInfo == null) {
-
-                // map is full, make room by cleaning up unreferenced files
                 boolean unreferencedFileFound = true;
                 while (fileInfoMap.size() >= maxOpenFiles && unreferencedFileFound) {
+                    // map is full, make room by cleaning up unreferenced files
                     unreferencedFileFound = false;
                     for (Map.Entry<Integer, BufferedFileHandle> entry : fileInfoMap.entrySet()) {
                         if (entry.getValue().getReferenceCount() <= 0) {
@@ -829,12 +853,10 @@
                         }
                     }
                 }
-
                 if (fileInfoMap.size() >= maxOpenFiles) {
                     throw new HyracksDataException("Could not open fileId " + fileId + ". Max number of files "
                             + maxOpenFiles + " already opened and referenced.");
                 }
-
                 // create, open, and map new file reference
                 FileReference fileRef = fileMapManager.lookupFileName(fileId);
                 IFileHandle fh = ioManager.open(fileRef, IIOManager.FileReadWriteMode.READ_WRITE,
@@ -939,30 +961,49 @@
     }
 
     @Override
-    public synchronized void deleteFile(int fileId, boolean flushDirtyPages) throws HyracksDataException {
+    public void deleteFile(FileReference fileRef) throws HyracksDataException {
+        synchronized (fileInfoMap) {
+            if (fileMapManager.isMapped(fileRef)) {
+                int fileId = fileMapManager.lookupFileId(fileRef);
+                deleteFile(fileId);
+                return;
+            } else {
+                IoUtil.delete(fileRef);
+            }
+        }
+    }
+
+    @Override
+    public void deleteFile(int fileId) throws HyracksDataException {
         if (LOGGER.isLoggable(fileOpsLevel)) {
             LOGGER.log(fileOpsLevel, "Deleting file: " + fileId + " in cache: " + this);
         }
         synchronized (fileInfoMap) {
-            sweepAndFlush(fileId, flushDirtyPages);
+            sweepAndFlush(fileId, false);
             BufferedFileHandle fInfo = null;
             try {
                 fInfo = fileInfoMap.get(fileId);
                 if (fInfo != null && fInfo.getReferenceCount() > 0) {
                     throw new HyracksDataException("Deleting open file");
                 }
+            } catch (Exception e) {
+                throw HyracksDataException.create(e);
             } finally {
-                fileMapManager.unregisterFile(fileId);
-                if (fInfo != null) {
-                    // Mark the fInfo as deleted,
-                    // such that when its pages are reclaimed in openFile(),
-                    // the pages are not flushed to disk but only invalidated.
-                    synchronized (fInfo) {
-                        if (!fInfo.fileHasBeenDeleted()) {
-                            ioManager.close(fInfo.getFileHandle());
-                            fInfo.markAsDeleted();
+                FileReference fileRef = fileMapManager.unregisterFile(fileId);
+                try {
+                    if (fInfo != null) {
+                        // Mark the fInfo as deleted,
+                        // such that when its pages are reclaimed in openFile(),
+                        // the pages are not flushed to disk but only invalidated.
+                        synchronized (fInfo) {
+                            if (!fInfo.fileHasBeenDeleted()) {
+                                ioManager.close(fInfo.getFileHandle());
+                                fInfo.markAsDeleted();
+                            }
                         }
                     }
+                } finally {
+                    IoUtil.delete(fileRef);
                 }
             }
         }
@@ -1011,7 +1052,7 @@
 
     @Override
     public boolean removePage(ICachedPageInternal victimPage) {
-        CachedPage victim = (CachedPage)victimPage;
+        CachedPage victim = (CachedPage) victimPage;
         // Case 1 from findPage()
         if (victim.dpid < 0) { // new page
             if (!victim.pinCount.compareAndSet(0, 1)) {
@@ -1079,7 +1120,7 @@
             ICachedPageInternal old = cachedPages.set(victim.cpid, null);
             if (DEBUG) {
                 assert old == victim;
-            };
+            } ;
         }
         return true;
     }
@@ -1117,12 +1158,11 @@
     public ICachedPage confiscateLargePage(long dpid, int multiplier, int extraBlockPageId)
             throws HyracksDataException {
         ICachedPage cachedPage = confiscatePage(dpid, multiplier);
-        ((ICachedPageInternal)cachedPage).setExtraBlockPageId(extraBlockPageId);
+        ((ICachedPageInternal) cachedPage).setExtraBlockPageId(extraBlockPageId);
         return cachedPage;
     }
 
-    private ICachedPage confiscatePage(long dpid, int multiplier)
-            throws HyracksDataException {
+    private ICachedPage confiscatePage(long dpid, int multiplier) throws HyracksDataException {
         return getPageLoop(dpid, multiplier, true);
     }
 
@@ -1214,8 +1254,7 @@
         return null;
     }
 
-    private ICachedPage getPageLoop(long dpid, int multiplier, boolean confiscate)
-            throws HyracksDataException {
+    private ICachedPage getPageLoop(long dpid, int multiplier, boolean confiscate) throws HyracksDataException {
         final long startingPinCount = DEBUG ? masterPinCount.get() : -1;
         int cycleCount = 0;
         try {
@@ -1259,16 +1298,16 @@
                 if (cycleCount > MAX_PIN_ATTEMPT_CYCLES) {
                     cycleCount = 0; // suppress warning below
                     throw new HyracksDataException("Unable to find free page in buffer cache after "
-                            + MAX_PIN_ATTEMPT_CYCLES + " cycles (buffer cache undersized?)" + (DEBUG ? " ; "
-                            + (masterPinCount.get() - startingPinCount) + " successful pins since start of cycle"
-                            : ""));
+                            + MAX_PIN_ATTEMPT_CYCLES + " cycles (buffer cache undersized?)"
+                            + (DEBUG ? " ; " + (masterPinCount.get() - startingPinCount)
+                                    + " successful pins since start of cycle" : ""));
                 }
             }
         } finally {
             if (cycleCount > PIN_ATTEMPT_CYCLES_WARNING_THRESHOLD && LOGGER.isLoggable(Level.WARNING)) {
-                LOGGER.warning("Took " + cycleCount + " cycles to find free page in buffer cache.  (buffer cache " +
-                        "undersized?)" + (DEBUG ? " ; " + (masterPinCount.get() - startingPinCount) +
-                        " successful pins since start of cycle" : ""));
+                LOGGER.warning("Took " + cycleCount + " cycles to find free page in buffer cache.  (buffer cache "
+                        + "undersized?)" + (DEBUG ? " ; " + (masterPinCount.get() - startingPinCount)
+                                + " successful pins since start of cycle" : ""));
             }
         }
     }
@@ -1282,7 +1321,7 @@
     public void returnPage(ICachedPage page, boolean reinsert) {
         CachedPage cPage = (CachedPage) page;
         CacheBucket bucket;
-        if (!page.confiscated()){
+        if (!page.confiscated()) {
             return;
         }
         if (reinsert) {
@@ -1298,7 +1337,7 @@
                 cPage.next = bucket.cachedPage;
                 bucket.cachedPage = cPage;
                 cPage.pinCount.decrementAndGet();
-                if (DEBUG){
+                if (DEBUG) {
                     assert cPage.pinCount.get() == 0;
                     assert cPage.latch.getReadLockCount() == 0;
                     assert cPage.latch.getWriteHoldCount() == 0;
@@ -1314,7 +1353,7 @@
         } else {
             cPage.invalidate();
             cPage.pinCount.decrementAndGet();
-            if (DEBUG){
+            if (DEBUG) {
                 assert cPage.pinCount.get() == 0;
                 assert cPage.latch.getReadLockCount() == 0;
                 assert cPage.latch.getWriteHoldCount() == 0;
@@ -1363,23 +1402,23 @@
      * _ONLY_ call this if you absolutely, positively know this file has no dirty pages in the cache!
      * Bypasses the normal lifecycle of a file handle and evicts all references to it immediately.
      */
-    public void purgeHandle(int fileId) throws HyracksDataException{
-        synchronized(fileInfoMap){
-                BufferedFileHandle fh = fileInfoMap.get(fileId);
-                if (fh != null){
-                    ioManager.close(fh.getFileHandle());
-                    fileInfoMap.remove(fileId);
-                    fileMapManager.unregisterFile(fileId);
-                }
+    public void purgeHandle(int fileId) throws HyracksDataException {
+        synchronized (fileInfoMap) {
+            BufferedFileHandle fh = fileInfoMap.get(fileId);
+            if (fh != null) {
+                ioManager.close(fh.getFileHandle());
+                fileInfoMap.remove(fileId);
+                fileMapManager.unregisterFile(fileId);
+            }
         }
     }
 
     static class BufferCacheHeaderHelper {
         private static final int FRAME_MULTIPLIER_OFF = 0;
-        private static final int EXTRA_BLOCK_PAGE_ID_OFF = FRAME_MULTIPLIER_OFF + 4;  // 4
+        private static final int EXTRA_BLOCK_PAGE_ID_OFF = FRAME_MULTIPLIER_OFF + 4; // 4
 
         private final ByteBuffer buf;
-        private final ByteBuffer [] array;
+        private final ByteBuffer[] array;
 
         private BufferCacheHeaderHelper(int pageSize) {
             buf = ByteBuffer.allocate(RESERVED_HEADER_BYTES + pageSize);
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/DebugBufferCache.java b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/DebugBufferCache.java
index 4461069..8f7a965 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/DebugBufferCache.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/DebugBufferCache.java
@@ -52,9 +52,10 @@
     }
 
     @Override
-    public void createFile(FileReference fileRef) throws HyracksDataException {
-        bufferCache.createFile(fileRef);
+    public int createFile(FileReference fileRef) throws HyracksDataException {
+        int fileId = bufferCache.createFile(fileRef);
         createFileCount.addAndGet(1);
+        return fileId;
     }
 
     @Override
@@ -70,8 +71,8 @@
     }
 
     @Override
-    public void deleteFile(int fileId, boolean flushDirtyPages) throws HyracksDataException {
-        bufferCache.deleteFile(fileId, flushDirtyPages);
+    public void deleteFile(int fileId) throws HyracksDataException {
+        bufferCache.deleteFile(fileId);
         deleteFileCount.addAndGet(1);
     }
 
@@ -249,4 +250,16 @@
             throws HyracksDataException {
         bufferCache.resizePage(page, multiplier, extraPageBlockHelper);
     }
+
+    @Override
+    public int openFile(FileReference fileRef) throws HyracksDataException {
+        openFileCount.incrementAndGet();
+        return bufferCache.openFile(fileRef);
+    }
+
+    @Override
+    public void deleteFile(FileReference file) throws HyracksDataException {
+        deleteFileCount.incrementAndGet();
+        bufferCache.deleteFile(file);
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/IBufferCache.java b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/IBufferCache.java
index a3fc0e2..789f7b7 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/IBufferCache.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/buffercache/IBufferCache.java
@@ -28,13 +28,65 @@
     int INVALID_PAGEID = -1;
     int RESERVED_HEADER_BYTES = 8;
 
-    void createFile(FileReference fileRef) throws HyracksDataException;
+    /**
+     * Create file on disk
+     *
+     * @param fileRef
+     *            the file to create
+     * @return the file id
+     * @throws HyracksDataException
+     *             if the file already exists or attempt to create the file failed
+     */
+    int createFile(FileReference fileRef) throws HyracksDataException;
 
+    /**
+     * Open the file and register it (if not registered) with the file map manager
+     *
+     * @param fileRef
+     *            the file to open
+     * @return the file id
+     * @throws HyracksDataException
+     *             if the file doesn't exist or buffer cache failed to open the file
+     */
+    int openFile(FileReference fileRef) throws HyracksDataException;
+
+    /**
+     * Open the mapped file with the passed file id
+     *
+     * @param fileId
+     *            the file id
+     * @throws HyracksDataException
+     *             if the file doesn't exist or buffer cache fails to open the file
+     */
     void openFile(int fileId) throws HyracksDataException;
 
+    /**
+     * close the file
+     *
+     * @param fileId
+     *            the file id
+     * @throws HyracksDataException
+     *             if file doesn't exist or is not open
+     */
     void closeFile(int fileId) throws HyracksDataException;
 
-    void deleteFile(int fileId, boolean flushDirtyPages) throws HyracksDataException;
+    /**
+     * delete the file from memory and disk
+     *
+     * @param fileId
+     *            the file id
+     * @throws HyracksDataException
+     *             if the file doesn't exist or if a failure to delete takes place
+     */
+    void deleteFile(int fileId) throws HyracksDataException;
+
+    /**
+     * Delete from memory if registered and from disk
+     *
+     * @param file
+     * @throws HyracksDataException
+     */
+    void deleteFile(FileReference file) throws HyracksDataException;
 
     ICachedPage tryPin(long dpid) throws HyracksDataException;
 
@@ -74,9 +126,9 @@
 
     void setPageDiskId(ICachedPage page, long dpid);
 
-    public boolean isReplicationEnabled();
+    boolean isReplicationEnabled();
 
-    public IIOReplicationManager getIOReplicationManager();
+    IIOReplicationManager getIOReplicationManager();
 
     void purgeHandle(int fileId) throws HyracksDataException;
 
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/TransientFileMapManager.java b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/FileMapManager.java
similarity index 64%
rename from hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/TransientFileMapManager.java
rename to hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/FileMapManager.java
index 66d54b1..209974e 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/TransientFileMapManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/FileMapManager.java
@@ -18,24 +18,25 @@
  */
 package org.apache.hyracks.storage.common.file;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
 
+import org.apache.hyracks.api.exceptions.ErrorCode;
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
 
-public class TransientFileMapManager implements IFileMapManager {
+public class FileMapManager implements IFileMapManager {
     private static final long serialVersionUID = 1L;
 
-    private Map<Integer, FileReference> id2nameMap = new HashMap<Integer, FileReference>();
-    private Map<FileReference, Integer> name2IdMap = new HashMap<FileReference, Integer>();
+    private ConcurrentMap<Integer, FileReference> id2nameMap = new ConcurrentHashMap<>();
+    private ConcurrentMap<FileReference, Integer> name2IdMap = new ConcurrentHashMap<>();
     private int idCounter = 0;
 
     @Override
     public FileReference lookupFileName(int fileId) throws HyracksDataException {
         FileReference fRef = id2nameMap.get(fileId);
         if (fRef == null) {
-            throw new HyracksDataException("No mapping found for id: " + fileId);
+            throw HyracksDataException.create(ErrorCode.NO_MAPPING_FOR_FILE_ID, fileId);
         }
         return fRef;
     }
@@ -44,7 +45,7 @@
     public int lookupFileId(FileReference fileRef) throws HyracksDataException {
         Integer fileId = name2IdMap.get(fileRef);
         if (fileId == null) {
-            throw new HyracksDataException("No mapping found for name: " + fileRef);
+            throw HyracksDataException.create(ErrorCode.NO_MAPPING_FOR_FILENAME, fileRef);
         }
         return fileId;
     }
@@ -60,16 +61,24 @@
     }
 
     @Override
-    public void unregisterFile(int fileId) throws HyracksDataException {
+    public synchronized FileReference unregisterFile(int fileId) throws HyracksDataException {
         FileReference fileRef = id2nameMap.remove(fileId);
+        if (fileRef == null) {
+            throw HyracksDataException.create(ErrorCode.NO_MAPPING_FOR_FILE_ID, fileId);
+        }
         name2IdMap.remove(fileRef);
+        return fileRef;
     }
 
     @Override
-    public void registerFile(FileReference fileRef) throws HyracksDataException {
-        Integer fileId = idCounter++;
+    public synchronized int registerFile(FileReference fileRef) throws HyracksDataException {
+        if (isMapped(fileRef)) {
+            throw HyracksDataException.create(ErrorCode.FILE_ALREADY_MAPPED, fileRef);
+        }
+        int fileId = idCounter++;
         id2nameMap.put(fileId, fileRef);
         name2IdMap.put(fileRef, fileId);
+        return fileId;
     }
 
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/IFileMapManager.java b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/IFileMapManager.java
index 0d81776..9a633b3 100644
--- a/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/IFileMapManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/file/IFileMapManager.java
@@ -34,8 +34,9 @@
      *            - file reference to register
      * @throws HyracksDataException
      *             - if a mapping for the file already exists.
+     * @return the file id
      */
-    public void registerFile(FileReference fileRef) throws HyracksDataException;
+    int registerFile(FileReference fileRef) throws HyracksDataException;
 
     /**
      * Unregister a file mapping
@@ -44,7 +45,8 @@
      *            - The file id whose mapping is to be unregistered.
      * @throws HyracksDataException
      *             - If the fileid is not mapped currently in this manager.
+     * @return the file reference
      */
-    public void unregisterFile(int fileId) throws HyracksDataException;
+    FileReference unregisterFile(int fileId) throws HyracksDataException;
 
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/storage/am/common/AbstractIndexLifecycleTest.java b/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/storage/am/common/AbstractIndexLifecycleTest.java
index 8211685..aac4df5 100644
--- a/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/storage/am/common/AbstractIndexLifecycleTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/storage/am/common/AbstractIndexLifecycleTest.java
@@ -18,14 +18,13 @@
  */
 package org.apache.hyracks.storage.am.common;
 
+import org.apache.hyracks.api.exceptions.HyracksDataException;
+import org.apache.hyracks.storage.common.IIndex;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
-import org.apache.hyracks.api.exceptions.HyracksDataException;
-import org.apache.hyracks.storage.common.IIndex;
-
 public abstract class AbstractIndexLifecycleTest {
 
     protected IIndex index;
@@ -48,10 +47,16 @@
 
     @Test
     public void validSequenceTest() throws Exception {
-        // Double create is valid
+        // Double create is invalid
         index.create();
         Assert.assertTrue(persistentStateExists());
-        index.create();
+        boolean exceptionCaught = false;
+        try {
+            index.create();
+        } catch (Exception e) {
+            exceptionCaught = true;
+        }
+        Assert.assertTrue(exceptionCaught);
         Assert.assertTrue(persistentStateExists());
 
         // Double open is valid
@@ -69,8 +74,6 @@
 
         // Insert more stuff
         performInsertions();
-
-        // Double close is valid
         index.deactivate();
 
         // Check that the inserted stuff is still there
@@ -78,10 +81,16 @@
         checkInsertions();
         index.deactivate();
 
-        // Double destroy is valid
+        // Double destroy is invalid
         index.destroy();
         Assert.assertFalse(persistentStateExists());
-        index.destroy();
+        exceptionCaught = false;
+        try {
+            index.destroy();
+        } catch (Exception e) {
+            exceptionCaught = true;
+        }
+        Assert.assertTrue(exceptionCaught);
         Assert.assertFalse(persistentStateExists());
     }
 
@@ -89,20 +98,34 @@
     public void invalidSequenceTest1() throws Exception {
         index.create();
         index.activate();
-        index.create();
+        try {
+            index.create();
+        } finally {
+            index.deactivate();
+            index.destroy();
+        }
     }
 
     @Test(expected = HyracksDataException.class)
     public void invalidSequenceTest2() throws Exception {
         index.create();
         index.activate();
-        index.destroy();
+        try {
+            index.destroy();
+        } finally {
+            index.deactivate();
+            index.destroy();
+        }
     }
 
     @Test(expected = HyracksDataException.class)
     public void invalidSequenceTest3() throws Exception {
         index.create();
-        index.clear();
+        try {
+            index.clear();
+        } finally {
+            index.destroy();
+        }
     }
 
     @Test(expected = HyracksDataException.class)
@@ -114,7 +137,12 @@
     public void invalidSequenceTest5() throws Exception {
         index.create();
         index.activate();
-        index.activate();
+        try {
+            index.activate();
+        } finally {
+            index.deactivate();
+            index.destroy();
+        }
     }
 
     @Test(expected = HyracksDataException.class)
@@ -122,6 +150,10 @@
         index.create();
         index.activate();
         index.deactivate();
-        index.deactivate();
+        try {
+            index.deactivate();
+        } finally {
+            index.destroy();
+        }
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/test/support/TestStorageManager.java b/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/test/support/TestStorageManager.java
index 3caeedd..350de74 100644
--- a/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/test/support/TestStorageManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/test/support/TestStorageManager.java
@@ -24,7 +24,6 @@
 import org.apache.hyracks.storage.common.IResourceLifecycleManager;
 import org.apache.hyracks.storage.common.IStorageManager;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.storage.common.file.ResourceIdFactory;
 
 public class TestStorageManager implements IStorageManager {
@@ -36,11 +35,6 @@
     }
 
     @Override
-    public IFileMapProvider getFileMapProvider(INCServiceContext ctx) {
-        return TestStorageManagerComponentHolder.getFileMapProvider();
-    }
-
-    @Override
     public ILocalResourceRepository getLocalResourceRepository(INCServiceContext ctx) {
         return TestStorageManagerComponentHolder.getLocalResourceRepository();
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/test/support/TestStorageManagerComponentHolder.java b/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/test/support/TestStorageManagerComponentHolder.java
index d9c4b85..3060b25 100644
--- a/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/test/support/TestStorageManagerComponentHolder.java
+++ b/hyracks-fullstack/hyracks/hyracks-test-support/src/main/java/org/apache/hyracks/test/support/TestStorageManagerComponentHolder.java
@@ -43,12 +43,12 @@
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICacheMemoryAllocator;
 import org.apache.hyracks.storage.common.buffercache.IPageReplacementStrategy;
+import org.apache.hyracks.storage.common.file.FileMapManager;
 import org.apache.hyracks.storage.common.file.IFileMapManager;
 import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.storage.common.file.ILocalResourceRepositoryFactory;
 import org.apache.hyracks.storage.common.file.ResourceIdFactory;
 import org.apache.hyracks.storage.common.file.ResourceIdFactoryProvider;
-import org.apache.hyracks.storage.common.file.TransientFileMapManager;
 import org.apache.hyracks.storage.common.file.TransientLocalResourceRepositoryFactory;
 
 public class TestStorageManagerComponentHolder {
@@ -98,9 +98,9 @@
         return bufferCache;
     }
 
-    public synchronized static IFileMapProvider getFileMapProvider() {
+    private synchronized static IFileMapProvider getFileMapProvider() {
         if (fileMapProvider == null) {
-            fileMapProvider = new TransientFileMapManager();
+            fileMapProvider = new FileMapManager();
         }
         return fileMapProvider;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/src/test/java/org/apache/hyracks/storage/am/bloomfilter/BloomFilterTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/src/test/java/org/apache/hyracks/storage/am/bloomfilter/BloomFilterTest.java
index 26d6d85..35779ac 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/src/test/java/org/apache/hyracks/storage/am/bloomfilter/BloomFilterTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/src/test/java/org/apache/hyracks/storage/am/bloomfilter/BloomFilterTest.java
@@ -62,13 +62,12 @@
         int numElements = 100;
         int[] keyFields = { 0 };
 
-        BloomFilter bf = new BloomFilter(bufferCache, harness.getFileMapProvider(), harness.getFileReference(),
-                keyFields);
+        BloomFilter bf = new BloomFilter(bufferCache, harness.getFileReference(), keyFields);
 
         double acceptanleFalsePositiveRate = 0.1;
         int maxBucketsPerElement = BloomCalculations.maxBucketsPerElement(numElements);
-        BloomFilterSpecification bloomFilterSpec = BloomCalculations.computeBloomSpec(maxBucketsPerElement,
-                acceptanleFalsePositiveRate);
+        BloomFilterSpecification bloomFilterSpec =
+                BloomCalculations.computeBloomSpec(maxBucketsPerElement, acceptanleFalsePositiveRate);
 
         bf.create();
         bf.activate();
@@ -121,13 +120,12 @@
         int numElements = 10000;
         int[] keyFields = { 2, 4, 1 };
 
-        BloomFilter bf = new BloomFilter(bufferCache, harness.getFileMapProvider(), harness.getFileReference(),
-                keyFields);
+        BloomFilter bf = new BloomFilter(bufferCache, harness.getFileReference(), keyFields);
 
         double acceptanleFalsePositiveRate = 0.1;
         int maxBucketsPerElement = BloomCalculations.maxBucketsPerElement(numElements);
-        BloomFilterSpecification bloomFilterSpec = BloomCalculations.computeBloomSpec(maxBucketsPerElement,
-                acceptanleFalsePositiveRate);
+        BloomFilterSpecification bloomFilterSpec =
+                BloomCalculations.computeBloomSpec(maxBucketsPerElement, acceptanleFalsePositiveRate);
 
         bf.create();
         bf.activate();
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/src/test/java/org/apache/hyracks/storage/am/bloomfilter/util/BloomFilterTestHarness.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/src/test/java/org/apache/hyracks/storage/am/bloomfilter/util/BloomFilterTestHarness.java
index 04519e5..6ccb2be 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/src/test/java/org/apache/hyracks/storage/am/bloomfilter/util/BloomFilterTestHarness.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/src/test/java/org/apache/hyracks/storage/am/bloomfilter/util/BloomFilterTestHarness.java
@@ -29,7 +29,6 @@
 import org.apache.hyracks.api.io.IIOManager;
 import org.apache.hyracks.storage.am.config.AccessMethodTestsConfig;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 
@@ -45,7 +44,6 @@
     protected IIOManager ioManager;
     protected IHyracksTaskContext ctx;
     protected IBufferCache bufferCache;
-    protected IFileMapProvider fileMapProvider;
     protected FileReference file;
 
     protected final Random rnd = new Random();
@@ -70,7 +68,6 @@
         TestStorageManagerComponentHolder.init(pageSize, numPages, maxOpenFiles);
         ioManager = ctx.getIoManager();
         bufferCache = TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        fileMapProvider = TestStorageManagerComponentHolder.getFileMapProvider();
         file = ioManager.getFileReference(0, simpleDateFormat.format(new Date()));
         rnd.setSeed(RANDOM_SEED);
     }
@@ -88,10 +85,6 @@
         return bufferCache;
     }
 
-    public IFileMapProvider getFileMapProvider() {
-        return fileMapProvider;
-    }
-
     public Random getRandom() {
         return rnd;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeBulkLoadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeBulkLoadTest.java
index 76a9078..394f989 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeBulkLoadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeBulkLoadTest.java
@@ -50,10 +50,9 @@
     @SuppressWarnings("rawtypes")
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, numKeys, leafType, harness.getPageManagerFactory()
-                        .createPageManager(harness.getBufferCache()));
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes, numKeys,
+                leafType, harness.getPageManagerFactory().createPageManager(harness.getBufferCache()));
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeDeleteTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeDeleteTest.java
index 905fd22..edf02fc 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeDeleteTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeDeleteTest.java
@@ -50,10 +50,9 @@
     @SuppressWarnings("rawtypes")
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, numKeys, leafType, harness.getPageManagerFactory()
-                        .createPageManager(harness.getBufferCache()));
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes, numKeys,
+                leafType, harness.getPageManagerFactory().createPageManager(harness.getBufferCache()));
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeExamplesTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeExamplesTest.java
index 6c6161f..18580b0 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeExamplesTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeExamplesTest.java
@@ -52,7 +52,7 @@
         ITreeIndexMetadataFrameFactory metaFrameFactory = new LIFOMetaDataFrameFactory();
         LinkedMetaDataPageManager freePageManager =
                 new LinkedMetaDataPageManager(harness.getBufferCache(), metaFrameFactory);
-        return BTreeUtils.createBTree(harness.getBufferCache(), harness.getFileMapProvider(), typeTraits, cmpFactories,
+        return BTreeUtils.createBTree(harness.getBufferCache(), typeTraits, cmpFactories,
                 BTreeLeafFrameType.REGULAR_NSM, harness.getFileReference(), freePageManager);
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeInsertTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeInsertTest.java
index 14810a7..66c80fa 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeInsertTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeInsertTest.java
@@ -33,10 +33,10 @@
  * Tests the BTree insert operation with strings and integer fields using
  * various numbers of key and payload fields. Each tests first fills a BTree with
  * randomly generated tuples. We compare the following operations against expected results:
- *      1) Point searches for all tuples
- *      2) Ordered scan
- *      3) Disk-order scan
- *      4) Range search (and prefix search for composite keys)
+ * 1) Point searches for all tuples
+ * 2) Ordered scan
+ * 3) Disk-order scan
+ * 4) Range search (and prefix search for composite keys)
  */
 public class BTreeInsertTest extends OrderedIndexInsertTest {
 
@@ -59,10 +59,9 @@
     @SuppressWarnings("rawtypes")
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, numKeys, leafType, harness.getPageManagerFactory()
-                        .createPageManager(harness.getBufferCache()));
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes, numKeys,
+                leafType, harness.getPageManagerFactory().createPageManager(harness.getBufferCache()));
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeLifecycleTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeLifecycleTest.java
index a096d59..7caa40c 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeLifecycleTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeLifecycleTest.java
@@ -36,7 +36,8 @@
     private final TreeIndexTestUtils titu = new OrderedIndexTestUtils();
 
     @SuppressWarnings("rawtypes")
-    private final ISerializerDeserializer[] fieldSerdes = new ISerializerDeserializer[] { IntegerSerializerDeserializer.INSTANCE };
+    private final ISerializerDeserializer[] fieldSerdes =
+            new ISerializerDeserializer[] { IntegerSerializerDeserializer.INSTANCE };
 
     private ITreeIndexFrame frame = null;
 
@@ -46,20 +47,14 @@
     @Override
     public void setup() throws Exception {
         harness.setUp();
-        testCtx = BTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, fieldSerdes.length, BTreeLeafFrameType.REGULAR_NSM, harness
-                        .getPageManagerFactory().createPageManager(harness.getBufferCache()));
+        testCtx = BTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes,
+                fieldSerdes.length, BTreeLeafFrameType.REGULAR_NSM,
+                harness.getPageManagerFactory().createPageManager(harness.getBufferCache()));
         index = testCtx.getIndex();
     }
 
     @Override
     public void tearDown() throws HyracksDataException {
-        try {
-            testCtx.getIndex().deactivate();
-        } catch (Exception e) {
-        } finally {
-            testCtx.getIndex().destroy();
-        }
         harness.tearDown();
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeModificationOperationCallbackTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeModificationOperationCallbackTest.java
index defb0bf..304bf14 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeModificationOperationCallbackTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeModificationOperationCallbackTest.java
@@ -37,9 +37,9 @@
     protected void createIndexInstance() throws Exception {
         IMetadataPageManagerFactory freePageManagerFactory = new LinkedMetadataPageManagerFactory();
         IMetadataPageManager freePageManager = freePageManagerFactory.createPageManager(harness.getBufferCache());
-        index = BTreeUtils.createBTree(harness.getBufferCache(), harness.getFileMapProvider(), SerdeUtils
-                .serdesToTypeTraits(keySerdes), SerdeUtils.serdesToComparatorFactories(keySerdes, keySerdes.length),
-                BTreeLeafFrameType.REGULAR_NSM, harness.getFileReference(), freePageManager);
+        index = BTreeUtils.createBTree(harness.getBufferCache(), SerdeUtils.serdesToTypeTraits(keySerdes),
+                SerdeUtils.serdesToComparatorFactories(keySerdes, keySerdes.length), BTreeLeafFrameType.REGULAR_NSM,
+                harness.getFileReference(), freePageManager);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSearchCursorTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSearchCursorTest.java
index 1b6f42b..cc4f444 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSearchCursorTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSearchCursorTest.java
@@ -98,16 +98,16 @@
 
         IMetadataPageManager freePageManager = new LinkedMetaDataPageManager(bufferCache, metaFrameFactory);
 
-        BTree btree = new BTree(bufferCache, harness.getFileMapProvider(), freePageManager, interiorFrameFactory,
-                leafFrameFactory, cmpFactories, fieldCount, harness.getFileReference());
+        BTree btree = new BTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                fieldCount, harness.getFileReference());
         btree.create();
         btree.activate();
 
         ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(fieldCount);
         ArrayTupleReference tuple = new ArrayTupleReference();
 
-        ITreeIndexAccessor indexAccessor = btree.createAccessor(TestOperationCallback.INSTANCE,
-                TestOperationCallback.INSTANCE);
+        ITreeIndexAccessor indexAccessor =
+                btree.createAccessor(TestOperationCallback.INSTANCE, TestOperationCallback.INSTANCE);
 
         // generate keys
         int numKeys = 50;
@@ -174,16 +174,16 @@
 
         IMetadataPageManager freePageManager = new LinkedMetaDataPageManager(bufferCache, metaFrameFactory);
 
-        BTree btree = new BTree(bufferCache, harness.getFileMapProvider(), freePageManager, interiorFrameFactory,
-                leafFrameFactory, cmpFactories, fieldCount, harness.getFileReference());
+        BTree btree = new BTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                fieldCount, harness.getFileReference());
         btree.create();
         btree.activate();
 
         ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(fieldCount);
         ArrayTupleReference tuple = new ArrayTupleReference();
 
-        ITreeIndexAccessor indexAccessor = btree.createAccessor(TestOperationCallback.INSTANCE,
-                TestOperationCallback.INSTANCE);
+        ITreeIndexAccessor indexAccessor =
+                btree.createAccessor(TestOperationCallback.INSTANCE, TestOperationCallback.INSTANCE);
 
         // generate keys
         int numKeys = 50;
@@ -247,16 +247,16 @@
 
         IMetadataPageManager freePageManager = new LinkedMetaDataPageManager(bufferCache, metaFrameFactory);
 
-        BTree btree = new BTree(bufferCache, harness.getFileMapProvider(), freePageManager, interiorFrameFactory,
-                leafFrameFactory, cmpFactories, fieldCount, harness.getFileReference());
+        BTree btree = new BTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                fieldCount, harness.getFileReference());
         btree.create();
         btree.activate();
 
         ArrayTupleBuilder tupleBuilder = new ArrayTupleBuilder(fieldCount);
         ArrayTupleReference tuple = new ArrayTupleReference();
 
-        ITreeIndexAccessor indexAccessor = btree.createAccessor(TestOperationCallback.INSTANCE,
-                TestOperationCallback.INSTANCE);
+        ITreeIndexAccessor indexAccessor =
+                btree.createAccessor(TestOperationCallback.INSTANCE, TestOperationCallback.INSTANCE);
 
         // generate keys
         int numKeys = 50;
@@ -309,8 +309,8 @@
         searchCmps[0] = PointableBinaryComparatorFactory.of(IntegerPointable.FACTORY).createBinaryComparator();
         MultiComparator searchCmp = new MultiComparator(searchCmps);
 
-        RangePredicate rangePred = new RangePredicate(lowKey, highKey, lowKeyInclusive, highKeyInclusive, searchCmp,
-                searchCmp);
+        RangePredicate rangePred =
+                new RangePredicate(lowKey, highKey, lowKeyInclusive, highKeyInclusive, searchCmp, searchCmp);
         return rangePred;
     }
 
@@ -356,8 +356,8 @@
 
                 ITreeIndexCursor rangeCursor = new BTreeRangeSearchCursor(leafFrame, false);
                 RangePredicate rangePred = createRangePredicate(lowKey, highKey, lowKeyInclusive, highKeyInclusive);
-                ITreeIndexAccessor indexAccessor = btree.createAccessor(TestOperationCallback.INSTANCE,
-                        TestOperationCallback.INSTANCE);
+                ITreeIndexAccessor indexAccessor =
+                        btree.createAccessor(TestOperationCallback.INSTANCE, TestOperationCallback.INSTANCE);
                 indexAccessor.search(rangeCursor, rangePred);
 
                 try {
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSearchOperationCallbackTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSearchOperationCallbackTest.java
index c9248a6..003dd39 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSearchOperationCallbackTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSearchOperationCallbackTest.java
@@ -36,10 +36,9 @@
     @Override
     protected void createIndexInstance() throws Exception {
         ITreeIndexMetadataFrameFactory metaFrameFactory = new LIFOMetaDataFrameFactory();
-        LinkedMetaDataPageManager freePageManager = new LinkedMetaDataPageManager(harness.getBufferCache(),
-                metaFrameFactory);
-        index = BTreeUtils.createBTree(harness.getBufferCache(), harness.getFileMapProvider(),
-                SerdeUtils.serdesToTypeTraits(keySerdes),
+        LinkedMetaDataPageManager freePageManager =
+                new LinkedMetaDataPageManager(harness.getBufferCache(), metaFrameFactory);
+        index = BTreeUtils.createBTree(harness.getBufferCache(), SerdeUtils.serdesToTypeTraits(keySerdes),
                 SerdeUtils.serdesToComparatorFactories(keySerdes, keySerdes.length), BTreeLeafFrameType.REGULAR_NSM,
                 harness.getFileReference(), freePageManager);
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSortedInsertTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSortedInsertTest.java
index 164f699..08f3cf6 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSortedInsertTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeSortedInsertTest.java
@@ -59,10 +59,9 @@
     @SuppressWarnings("rawtypes")
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, numKeys, leafType, harness.getPageManagerFactory()
-                        .createPageManager(harness.getBufferCache()));
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes, numKeys,
+                leafType, harness.getPageManagerFactory().createPageManager(harness.getBufferCache()));
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeStatsTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeStatsTest.java
index ee7e968..7281da6 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeStatsTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeStatsTest.java
@@ -58,7 +58,6 @@
 import org.apache.hyracks.storage.am.common.util.TreeIndexStats;
 import org.apache.hyracks.storage.am.common.util.TreeIndexStatsGatherer;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 import org.junit.Test;
@@ -77,7 +76,6 @@
 
         TestStorageManagerComponentHolder.init(PAGE_SIZE, NUM_PAGES, MAX_OPEN_FILES);
         IBufferCache bufferCache = harness.getBufferCache();
-        IFileMapProvider fmp = harness.getFileMapProvider();
 
         // declare fields
         int fieldCount = 2;
@@ -101,7 +99,7 @@
 
         IMetadataPageManager freePageManager = new LinkedMetaDataPageManager(bufferCache, metaFrameFactory);
 
-        BTree btree = new BTree(bufferCache, fmp, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+        BTree btree = new BTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
                 fieldCount, harness.getFileReference());
         btree.create();
         btree.activate();
@@ -163,16 +161,15 @@
             }
         }
 
-        int fileId = fmp.lookupFileId(harness.getFileReference());
-        TreeIndexStatsGatherer statsGatherer =
-                new TreeIndexStatsGatherer(bufferCache, freePageManager, fileId, btree.getRootPageId());
+        TreeIndexStatsGatherer statsGatherer = new TreeIndexStatsGatherer(bufferCache, freePageManager,
+                harness.getFileReference(), btree.getRootPageId());
         TreeIndexStats stats = statsGatherer.gatherStats(leafFrame, interiorFrame, metaFrame);
         if (LOGGER.isLoggable(Level.INFO)) {
             LOGGER.info("\n" + stats.toString());
         }
 
         TreeIndexBufferCacheWarmup bufferCacheWarmup =
-                new TreeIndexBufferCacheWarmup(bufferCache, freePageManager, fileId);
+                new TreeIndexBufferCacheWarmup(bufferCache, freePageManager, harness.getFileReference());
         bufferCacheWarmup.warmup(leafFrame, metaFrame, new int[] { 1, 2 }, new int[] { 2, 5 });
 
         btree.deactivate();
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpdateSearchTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpdateSearchTest.java
index 78023a2..78c92eb 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpdateSearchTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpdateSearchTest.java
@@ -82,8 +82,8 @@
         IBTreeLeafFrame leafFrame = (IBTreeLeafFrame) leafFrameFactory.createFrame();
 
         IMetadataPageManager freePageManager = new LinkedMetaDataPageManager(bufferCache, metaFrameFactory);
-        BTree btree = new BTree(bufferCache, harness.getFileMapProvider(), freePageManager, interiorFrameFactory,
-                leafFrameFactory, cmpFactories, fieldCount, harness.getFileReference());
+        BTree btree = new BTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                fieldCount, harness.getFileReference());
         btree.create();
         btree.activate();
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpdateTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpdateTest.java
index a8567e4..3374fec 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpdateTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpdateTest.java
@@ -50,10 +50,9 @@
     @SuppressWarnings("rawtypes")
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, numKeys, leafType, harness.getPageManagerFactory()
-                        .createPageManager(harness.getBufferCache()));
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes, numKeys,
+                leafType, harness.getPageManagerFactory().createPageManager(harness.getBufferCache()));
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpsertTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpsertTest.java
index 2d10a25..bc6a94f 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpsertTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/BTreeUpsertTest.java
@@ -33,10 +33,10 @@
  * Tests the BTree insert operation with strings and integer fields using
  * various numbers of key and payload fields. Each tests first fills a BTree with
  * randomly generated tuples. We compare the following operations against expected results:
- *      1) Point searches for all tuples
- *      2) Ordered scan
- *      3) Disk-order scan
- *      4) Range search (and prefix search for composite keys)
+ * 1) Point searches for all tuples
+ * 2) Ordered scan
+ * 3) Disk-order scan
+ * 4) Range search (and prefix search for composite keys)
  */
 public class BTreeUpsertTest extends OrderedIndexUpsertTest {
 
@@ -59,10 +59,9 @@
     @SuppressWarnings("rawtypes")
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, numKeys, leafType, harness.getPageManagerFactory()
-                        .createPageManager(harness.getBufferCache()));
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return BTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes, numKeys,
+                leafType, harness.getPageManagerFactory().createPageManager(harness.getBufferCache()));
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/FieldPrefixNSMTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/FieldPrefixNSMTest.java
index 2f1b89f..33177b0 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/FieldPrefixNSMTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/FieldPrefixNSMTest.java
@@ -49,7 +49,6 @@
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -128,10 +127,8 @@
         rnd.setSeed(50);
 
         IBufferCache bufferCache = harness.getBufferCache();
-        IFileMapProvider fileMapProvider = harness.getFileMapProvider();
         bufferCache.createFile(harness.getFileReference());
-        int btreeFileId = fileMapProvider.lookupFileId(harness.getFileReference());
-        bufferCache.openFile(btreeFileId);
+        int btreeFileId = bufferCache.openFile(harness.getFileReference());
         IHyracksTaskContext ctx = harness.getHyracksTaskContext();
         ICachedPage page = bufferCache.pin(BufferedFileHandle.getDiskPageId(btreeFileId, 0), true);
         try {
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/StorageFileAccessTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/StorageFileAccessTest.java
index d62d0ad..6dcb3a4 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/StorageFileAccessTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/StorageFileAccessTest.java
@@ -24,14 +24,13 @@
 import java.util.Random;
 import java.util.logging.Level;
 
-import org.junit.Test;
-
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.storage.am.btree.util.AbstractBTreeTest;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
 import org.apache.hyracks.storage.common.sync.LatchType;
+import org.junit.Test;
 
 public class StorageFileAccessTest extends AbstractBTreeTest {
     public class PinnedLatchedPage {
@@ -66,7 +65,7 @@
         private int loopCount = 0;
         private boolean fileIsOpen = false;
         private Random rnd = new Random(50);
-        private List<PinnedLatchedPage> pinnedPages = new LinkedList<PinnedLatchedPage>();
+        private List<PinnedLatchedPage> pinnedPages = new LinkedList<>();
 
         public FileAccessWorker(int workerId, IBufferCache bufferCache, FileAccessType fta, int fileId, int maxPages,
                 int maxPinnedPages, int maxLoopCount, int closeFileChance, long thinkTime) {
@@ -259,8 +258,7 @@
     public void oneThreadOneFileTest() throws Exception {
         IBufferCache bufferCache = harness.getBufferCache();
         bufferCache.createFile(harness.getFileReference());
-        int btreeFileId = harness.getFileMapProvider().lookupFileId(harness.getFileReference());
-        bufferCache.openFile(btreeFileId);
+        int btreeFileId = bufferCache.openFile(harness.getFileReference());
         Thread worker = new Thread(new FileAccessWorker(0, harness.getBufferCache(), FileAccessType.FTA_UNLATCHED,
                 btreeFileId, 10, 10, 100, 10, 0));
         worker.start();
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/multithread/BTreeMultiThreadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/multithread/BTreeMultiThreadTest.java
index fdc5e95..fc58452 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/multithread/BTreeMultiThreadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/multithread/BTreeMultiThreadTest.java
@@ -52,7 +52,7 @@
     @Override
     protected ITreeIndex createIndex(ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories,
             int[] bloomFilterKeyFields) throws HyracksDataException {
-        return BTreeUtils.createBTree(harness.getBufferCache(), harness.getFileMapProvider(), typeTraits, cmpFactories,
+        return BTreeUtils.createBTree(harness.getBufferCache(), typeTraits, cmpFactories,
                 BTreeLeafFrameType.REGULAR_NSM, harness.getFileReference(),
                 harness.getPageManagerFactory().createPageManager(harness.getBufferCache()));
     }
@@ -84,9 +84,8 @@
                 ProbabilityHelper.getUniformProbDist(insertDeleteUpdateUpsertOps.length)));
 
         // All operations mixed.
-        TestOperation[] allOps = new TestOperation[] { TestOperation.INSERT, TestOperation.DELETE,
-                TestOperation.UPDATE, TestOperation.UPSERT, TestOperation.POINT_SEARCH, TestOperation.SCAN,
-                TestOperation.DISKORDER_SCAN };
+        TestOperation[] allOps = new TestOperation[] { TestOperation.INSERT, TestOperation.DELETE, TestOperation.UPDATE,
+                TestOperation.UPSERT, TestOperation.POINT_SEARCH, TestOperation.SCAN, TestOperation.DISKORDER_SCAN };
         workloadConfs.add(new TestWorkloadConf(allOps, ProbabilityHelper.getUniformProbDist(allOps.length)));
 
         return workloadConfs;
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/util/BTreeTestContext.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/util/BTreeTestContext.java
index 2abd547..c6c43c8 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/util/BTreeTestContext.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/util/BTreeTestContext.java
@@ -31,7 +31,6 @@
 import org.apache.hyracks.storage.am.common.api.IPageManager;
 import org.apache.hyracks.storage.am.common.api.ITreeIndex;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 @SuppressWarnings("rawtypes")
 public class BTreeTestContext extends OrderedIndexTestContext {
@@ -52,14 +51,12 @@
         return btree.getComparatorFactories();
     }
 
-    public static BTreeTestContext create(IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            FileReference file, ISerializerDeserializer[] fieldSerdes, int numKeyFields, BTreeLeafFrameType leafType,
-            IPageManager pageManager)
-            throws Exception {
+    public static BTreeTestContext create(IBufferCache bufferCache, FileReference file,
+            ISerializerDeserializer[] fieldSerdes, int numKeyFields, BTreeLeafFrameType leafType,
+            IPageManager pageManager) throws Exception {
         ITypeTraits[] typeTraits = SerdeUtils.serdesToTypeTraits(fieldSerdes);
         IBinaryComparatorFactory[] cmpFactories = SerdeUtils.serdesToComparatorFactories(fieldSerdes, numKeyFields);
-        BTree btree = BTreeUtils.createBTree(bufferCache, fileMapProvider, typeTraits, cmpFactories, leafType, file,
-                pageManager);
+        BTree btree = BTreeUtils.createBTree(bufferCache, typeTraits, cmpFactories, leafType, file, pageManager);
         BTreeTestContext testCtx = new BTreeTestContext(fieldSerdes, btree);
         return testCtx;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/util/BTreeTestHarness.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/util/BTreeTestHarness.java
index f40d536..230e247 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/util/BTreeTestHarness.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/org/apache/hyracks/storage/am/btree/util/BTreeTestHarness.java
@@ -32,7 +32,6 @@
 import org.apache.hyracks.storage.am.common.freepage.LinkedMetadataPageManagerFactory;
 import org.apache.hyracks.storage.am.config.AccessMethodTestsConfig;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 
@@ -49,7 +48,6 @@
 
     protected IHyracksTaskContext ctx;
     protected IBufferCache bufferCache;
-    protected IFileMapProvider fileMapProvider;
     protected FileReference file;
     protected IMetadataPageManagerFactory pageManagerFactory;
 
@@ -76,7 +74,6 @@
         ctx = TestUtils.create(getHyracksFrameSize());
         TestStorageManagerComponentHolder.init(pageSize, numPages, maxOpenFiles);
         bufferCache = TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        fileMapProvider = TestStorageManagerComponentHolder.getFileMapProvider();
         file = ctx.getIoManager().getFileReference(0, simpleDateFormat.format(new Date()));
         pageManagerFactory = new LinkedMetadataPageManagerFactory();
         rnd.setSeed(RANDOM_SEED);
@@ -95,10 +92,6 @@
         return bufferCache;
     }
 
-    public IFileMapProvider getFileMapProvider() {
-        return fileMapProvider;
-    }
-
     public FileReference getFileReference() {
         return file;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeBulkLoadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeBulkLoadTest.java
index f96dd90..52279b8 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeBulkLoadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeBulkLoadTest.java
@@ -52,12 +52,12 @@
 
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, numKeys,
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, numKeys,
                 harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
-                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(), false);
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                false);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeDeleteTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeDeleteTest.java
index 0d2159b..2be956d 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeDeleteTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeDeleteTest.java
@@ -52,12 +52,12 @@
 
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, numKeys,
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, numKeys,
                 harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
-                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(), false);
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                false);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeExamplesTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeExamplesTest.java
index f246047..4b82349 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeExamplesTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeExamplesTest.java
@@ -49,8 +49,8 @@
             int[] bloomFilterKeyFields, ITypeTraits[] filterTypeTraits, IBinaryComparatorFactory[] filterCmpFactories,
             int[] btreeFields, int[] filterFields) throws HyracksDataException {
         return LSMBTreeUtil.createLSMTree(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), typeTraits,
-                cmpFactories, bloomFilterKeyFields, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
+                harness.getFileReference(), harness.getDiskBufferCache(), typeTraits, cmpFactories,
+                bloomFilterKeyFields, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
                 harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(), true,
                 filterTypeTraits, filterCmpFactories, btreeFields, filterFields, true,
                 harness.getMetadataPageManagerFactory());
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeFileManagerTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeFileManagerTest.java
index c8aaaab3..282623c 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeFileManagerTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeFileManagerTest.java
@@ -18,6 +18,8 @@
  */
 package org.apache.hyracks.storage.am.lsm.btree;
 
+import java.io.File;
+
 import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer;
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.dataflow.common.comm.io.ArrayTupleBuilder;
@@ -34,8 +36,6 @@
 import org.junit.Before;
 import org.junit.Test;
 
-import java.io.File;
-
 public class LSMBTreeFileManagerTest {
 
     private final LSMBTreeTestHarness harness = new LSMBTreeTestHarness();
@@ -53,12 +53,11 @@
     @Test
     public void deleteOrphanedFilesTest() throws Exception {
         ISerializerDeserializer[] fieldSerdes = { IntegerSerializerDeserializer.INSTANCE };
-        LSMBTreeTestContext ctx =
-                LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                                .getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(),
-                        fieldSerdes, 1, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness
-                                .getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
-                        harness.getMetadataPageManagerFactory(), false);
+        LSMBTreeTestContext ctx = LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, 1,
+                harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                false);
         ctx.getIndex().create();
         ctx.getIndex().activate();
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeFilterMergeTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeFilterMergeTest.java
index 96f29e4..29259c0 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeFilterMergeTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeFilterMergeTest.java
@@ -51,12 +51,12 @@
 
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, numKeys,
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, numKeys,
                 harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
-                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(), filtered);
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                filtered);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeInsertTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeInsertTest.java
index fe1082f..28eedd0 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeInsertTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeInsertTest.java
@@ -52,12 +52,12 @@
 
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes,
-                numKeys, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness
-                        .getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(), harness
-                                .getMetadataPageManagerFactory(), false);
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, numKeys,
+                harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                false);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeLifecycleTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeLifecycleTest.java
index adeb67d..98c5fb0 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeLifecycleTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeLifecycleTest.java
@@ -32,7 +32,8 @@
 public class LSMBTreeLifecycleTest extends AbstractIndexLifecycleTest {
 
     @SuppressWarnings("rawtypes")
-    private final ISerializerDeserializer[] fieldSerdes = new ISerializerDeserializer[] { IntegerSerializerDeserializer.INSTANCE };
+    private final ISerializerDeserializer[] fieldSerdes =
+            new ISerializerDeserializer[] { IntegerSerializerDeserializer.INSTANCE };
     private final LSMBTreeTestHarness harness = new LSMBTreeTestHarness();
     private final TreeIndexTestUtils titu = new OrderedIndexTestUtils();
 
@@ -56,22 +57,16 @@
     @Override
     public void setup() throws Exception {
         harness.setUp();
-        testCtx = LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, fieldSerdes.length,
+        testCtx = LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, fieldSerdes.length,
                 harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
-                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(), false);
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                false);
         index = testCtx.getIndex();
     }
 
     @Override
     public void tearDown() throws Exception {
-        try {
-            index.deactivate();
-        } catch (Exception e) {
-        } finally {
-            index.destroy();
-        }
         harness.tearDown();
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeMergeTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeMergeTest.java
index 76ff003..f24db13 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeMergeTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeMergeTest.java
@@ -51,12 +51,12 @@
 
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, numKeys,
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, numKeys,
                 harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
-                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(), filtered);
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                filtered);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeModificationOperationCallbackTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeModificationOperationCallbackTest.java
index 27b012e..3f6e74a 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeModificationOperationCallbackTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeModificationOperationCallbackTest.java
@@ -47,8 +47,7 @@
     @Override
     protected void createIndexInstance() throws Exception {
         index = LSMBTreeUtil.createLSMTree(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(),
-                SerdeUtils.serdesToTypeTraits(keySerdes),
+                harness.getFileReference(), harness.getDiskBufferCache(), SerdeUtils.serdesToTypeTraits(keySerdes),
                 SerdeUtils.serdesToComparatorFactories(keySerdes, keySerdes.length), bloomFilterKeyFields,
                 harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
                 NoOpOperationTrackerFactory.INSTANCE.getOperationTracker(null), harness.getIOScheduler(),
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeMultiBulkLoadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeMultiBulkLoadTest.java
index ea16368..0ce9051 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeMultiBulkLoadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeMultiBulkLoadTest.java
@@ -53,12 +53,12 @@
 
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, numKeys,
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, numKeys,
                 harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
-                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(), false);
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                false);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeScanDiskComponentsTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeScanDiskComponentsTest.java
index 3ba53dd..cb20b81 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeScanDiskComponentsTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeScanDiskComponentsTest.java
@@ -19,7 +19,7 @@
 
 package org.apache.hyracks.storage.am.lsm.btree;
 
-import static org.junit.Assert.*;
+import static org.junit.Assert.fail;
 
 import java.io.ByteArrayInputStream;
 import java.io.DataInput;
@@ -78,10 +78,10 @@
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
             BTreeLeafFrameType leafType, boolean filtered) throws Exception {
         return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes,
-                numKeys, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
-                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
-                harness.getMetadataPageManagerFactory(), false);
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, numKeys,
+                harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                false);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeSearchOperationCallbackTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeSearchOperationCallbackTest.java
index 0b260b4..f841d99 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeSearchOperationCallbackTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeSearchOperationCallbackTest.java
@@ -52,15 +52,13 @@
 
     @Override
     protected void createIndexInstance() throws Exception {
-        index = LSMBTreeUtil.createLSMTree(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(),
-                SerdeUtils.serdesToTypeTraits(keySerdes),
+        index = LSMBTreeUtil.createLSMTree(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), SerdeUtils.serdesToTypeTraits(keySerdes),
                 SerdeUtils.serdesToComparatorFactories(keySerdes, keySerdes.length), bloomFilterKeyFields,
                 harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
                 NoOpOperationTrackerFactory.INSTANCE.getOperationTracker(null), harness.getIOScheduler(),
-                harness.getIOOperationCallback(), true, null, null, null, null, true, harness
-                        .getMetadataPageManagerFactory());
+                harness.getIOOperationCallback(), true, null, null, null, null, true,
+                harness.getMetadataPageManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeUpdateTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeUpdateTest.java
index fdd1ec3..7a4af94 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeUpdateTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/LSMBTreeUpdateTest.java
@@ -52,12 +52,12 @@
 
     @Override
     protected OrderedIndexTestContext createTestContext(ISerializerDeserializer[] fieldSerdes, int numKeys,
-                                                        BTreeLeafFrameType leafType, boolean filtered) throws Exception {
-        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes,
-                numKeys, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness
-                        .getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(), harness
-                                .getMetadataPageManagerFactory(), false);
+            BTreeLeafFrameType leafType, boolean filtered) throws Exception {
+        return LSMBTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, numKeys,
+                harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
+                harness.getIOScheduler(), harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory(),
+                false);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/multithread/LSMBTreeMultiThreadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/multithread/LSMBTreeMultiThreadTest.java
index 9abc321..531a4fd 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/multithread/LSMBTreeMultiThreadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/multithread/LSMBTreeMultiThreadTest.java
@@ -53,8 +53,8 @@
     protected ITreeIndex createIndex(ITypeTraits[] typeTraits, IBinaryComparatorFactory[] cmpFactories,
             int[] bloomFilterKeyFields) throws HyracksDataException {
         return LSMBTreeUtil.createLSMTree(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), typeTraits,
-                cmpFactories, bloomFilterKeyFields, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
+                harness.getFileReference(), harness.getDiskBufferCache(), typeTraits, cmpFactories,
+                bloomFilterKeyFields, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
                 harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(), true, null,
                 null, null, null, true, harness.getMetadataPageManagerFactory());
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/BTreeRunner.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/BTreeRunner.java
index 0a36548..df6558c 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/BTreeRunner.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/BTreeRunner.java
@@ -28,7 +28,6 @@
 import org.apache.hyracks.storage.am.common.api.ITreeIndexMetadataFrameFactory;
 import org.apache.hyracks.storage.am.common.frames.LIFOMetaDataFrameFactory;
 import org.apache.hyracks.storage.am.common.freepage.LinkedMetaDataPageManager;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 
@@ -47,10 +46,9 @@
         IHyracksTaskContext ctx = TestUtils.create(HYRACKS_FRAME_SIZE);
         TestStorageManagerComponentHolder.init(pageSize, numPages, MAX_OPEN_FILES);
         bufferCache = TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        IFileMapProvider fmp = TestStorageManagerComponentHolder.getFileMapProvider();
         ITreeIndexMetadataFrameFactory metaFrameFactory = new LIFOMetaDataFrameFactory();
         LinkedMetaDataPageManager freePageManager = new LinkedMetaDataPageManager(bufferCache, metaFrameFactory);
-        btree = BTreeUtils.createBTree(bufferCache, fmp, typeTraits, cmpFactories, BTreeLeafFrameType.REGULAR_NSM, file,
+        btree = BTreeUtils.createBTree(bufferCache, typeTraits, cmpFactories, BTreeLeafFrameType.REGULAR_NSM, file,
                 freePageManager);
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/InMemoryBTreeRunner.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/InMemoryBTreeRunner.java
index 9ae5aae..d0b798a 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/InMemoryBTreeRunner.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/InMemoryBTreeRunner.java
@@ -41,7 +41,6 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.VirtualBufferCache;
 import org.apache.hyracks.storage.common.buffercache.HeapBufferAllocator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.TransientFileMapManager;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 
 public class InMemoryBTreeRunner extends Thread implements IExperimentRunner {
@@ -73,8 +72,8 @@
         ITreeIndexFrameFactory leafFrameFactory = new BTreeNSMLeafFrameFactory(tupleWriterFactory);
         ITreeIndexFrameFactory interiorFrameFactory = new BTreeNSMInteriorFrameFactory(tupleWriterFactory);
         IPageManager freePageManager = new VirtualFreePageManager(bufferCache);
-        btree = new BTree(bufferCache, new TransientFileMapManager(), freePageManager, interiorFrameFactory,
-                leafFrameFactory, cmpFactories, typeTraits.length, file);
+        btree = new BTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                typeTraits.length, file);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/LSMTreeRunner.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/LSMTreeRunner.java
index 15f2821..0c31795 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/LSMTreeRunner.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/perf/LSMTreeRunner.java
@@ -46,7 +46,6 @@
 import org.apache.hyracks.storage.common.IIndexAccessor;
 import org.apache.hyracks.storage.common.buffercache.HeapBufferAllocator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 
@@ -95,7 +94,6 @@
 
         ioDeviceId = 0;
         file = ioManager.resolveAbsolutePath(onDiskDir);
-        IFileMapProvider fmp = TestStorageManagerComponentHolder.getFileMapProvider();
 
         List<IVirtualBufferCache> virtualBufferCaches = new ArrayList<>();
         for (int i = 0; i < 2; i++) {
@@ -107,7 +105,7 @@
         this.ioScheduler = AsynchronousScheduler.INSTANCE;
         AsynchronousScheduler.INSTANCE.init(threadFactory);
 
-        lsmtree = LSMBTreeUtil.createLSMTree(ioManager, virtualBufferCaches, file, bufferCache, fmp, typeTraits,
+        lsmtree = LSMBTreeUtil.createLSMTree(ioManager, virtualBufferCaches, file, bufferCache, typeTraits,
                 cmpFactories, bloomFilterKeyFields, bloomFilterFalsePositiveRate, new NoMergePolicy(),
                 new ThreadCountingTracker(), ioScheduler, NoOpIOOperationCallbackFactory.INSTANCE.createIoOpCallback(),
                 true, null, null, null, null, true, TestStorageManagerComponentHolder.getMetadataPageManagerFactory());
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/util/LSMBTreeTestContext.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/util/LSMBTreeTestContext.java
index d8d6e5c..8667d85 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/util/LSMBTreeTestContext.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/util/LSMBTreeTestContext.java
@@ -41,12 +41,12 @@
 import org.apache.hyracks.storage.am.lsm.common.api.ILSMOperationTracker;
 import org.apache.hyracks.storage.am.lsm.common.api.IVirtualBufferCache;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 @SuppressWarnings("rawtypes")
 public final class LSMBTreeTestContext extends OrderedIndexTestContext {
 
-    public LSMBTreeTestContext(ISerializerDeserializer[] fieldSerdes, ITreeIndex treeIndex, boolean filtered) throws HyracksDataException {
+    public LSMBTreeTestContext(ISerializerDeserializer[] fieldSerdes, ITreeIndex treeIndex, boolean filtered)
+            throws HyracksDataException {
         super(fieldSerdes, treeIndex, filtered);
     }
 
@@ -71,12 +71,10 @@
     }
 
     public static LSMBTreeTestContext create(IIOManager ioManager, List<IVirtualBufferCache> virtualBufferCaches,
-                                             FileReference file, IBufferCache diskBufferCache, IFileMapProvider diskFileMapProvider,
-                                             ISerializerDeserializer[] fieldSerdes,
-                                             int numKeyFields, double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy,
-                                             ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-                                             IMetadataPageManagerFactory metadataPageManagerFactory, boolean filtered)
-            throws Exception {
+            FileReference file, IBufferCache diskBufferCache, ISerializerDeserializer[] fieldSerdes, int numKeyFields,
+            double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
+            ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
+            IMetadataPageManagerFactory metadataPageManagerFactory, boolean filtered) throws Exception {
         ITypeTraits[] typeTraits = SerdeUtils.serdesToTypeTraits(fieldSerdes);
         IBinaryComparatorFactory[] cmpFactories = SerdeUtils.serdesToComparatorFactories(fieldSerdes, numKeyFields);
         int[] bloomFilterKeyFields = new int[numKeyFields];
@@ -84,25 +82,23 @@
             bloomFilterKeyFields[i] = i;
         }
         LSMBTree lsmTree;
-        if(filtered) {
+        if (filtered) {
             ITypeTraits[] filterTypeTraits = new ITypeTraits[1];
             filterTypeTraits[0] = typeTraits[0];
             int[] btreefields = new int[typeTraits.length];
             for (int i = 0; i < btreefields.length; i++) {
                 btreefields[i] = i;
             }
-            int[] filterfields = {btreefields.length};
-            IBinaryComparatorFactory[] filterCmp = {cmpFactories[0]};
-            lsmTree = LSMBTreeUtil.createLSMTree(ioManager, virtualBufferCaches, file, diskBufferCache,
-                    diskFileMapProvider, typeTraits, cmpFactories, bloomFilterKeyFields, bloomFilterFalsePositiveRate,
-                    mergePolicy, opTracker, ioScheduler, ioOpCallback, true, filterTypeTraits, filterCmp, btreefields, filterfields, true,
+            int[] filterfields = { btreefields.length };
+            IBinaryComparatorFactory[] filterCmp = { cmpFactories[0] };
+            lsmTree = LSMBTreeUtil.createLSMTree(ioManager, virtualBufferCaches, file, diskBufferCache, typeTraits,
+                    cmpFactories, bloomFilterKeyFields, bloomFilterFalsePositiveRate, mergePolicy, opTracker,
+                    ioScheduler, ioOpCallback, true, filterTypeTraits, filterCmp, btreefields, filterfields, true,
                     metadataPageManagerFactory);
-        }
-        else{
-            lsmTree = LSMBTreeUtil.createLSMTree(ioManager, virtualBufferCaches, file, diskBufferCache,
-                    diskFileMapProvider, typeTraits, cmpFactories, bloomFilterKeyFields, bloomFilterFalsePositiveRate,
-                    mergePolicy, opTracker, ioScheduler, ioOpCallback, true, null,null,null,null, true,
-                    metadataPageManagerFactory);
+        } else {
+            lsmTree = LSMBTreeUtil.createLSMTree(ioManager, virtualBufferCaches, file, diskBufferCache, typeTraits,
+                    cmpFactories, bloomFilterKeyFields, bloomFilterFalsePositiveRate, mergePolicy, opTracker,
+                    ioScheduler, ioOpCallback, true, null, null, null, null, true, metadataPageManagerFactory);
         }
         LSMBTreeTestContext testCtx = new LSMBTreeTestContext(fieldSerdes, lsmTree, filtered);
         return testCtx;
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/util/LSMBTreeTestHarness.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/util/LSMBTreeTestHarness.java
index 2b5b4fb..95a979f 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/util/LSMBTreeTestHarness.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/org/apache/hyracks/storage/am/lsm/btree/util/LSMBTreeTestHarness.java
@@ -49,7 +49,6 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.VirtualBufferCache;
 import org.apache.hyracks.storage.common.buffercache.HeapBufferAllocator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 
@@ -73,7 +72,6 @@
     protected IOManager ioManager;
     protected int ioDeviceId;
     protected IBufferCache diskBufferCache;
-    protected IFileMapProvider diskFileMapProvider;
     protected List<IVirtualBufferCache> virtualBufferCaches;
     protected IHyracksTaskContext ctx;
     protected ILSMIOOperationScheduler ioScheduler;
@@ -113,7 +111,6 @@
         TestStorageManagerComponentHolder.init(diskPageSize, diskNumPages, diskMaxOpenFiles);
         file = ioManager.resolveAbsolutePath(onDiskDir);
         diskBufferCache = TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        diskFileMapProvider = TestStorageManagerComponentHolder.getFileMapProvider();
         virtualBufferCaches = new ArrayList<>();
         for (int i = 0; i < numMutableComponents; i++) {
             IVirtualBufferCache virtualBufferCache =
@@ -179,10 +176,6 @@
         return diskBufferCache;
     }
 
-    public IFileMapProvider getDiskFileMapProvider() {
-        return diskFileMapProvider;
-    }
-
     public List<IVirtualBufferCache> getVirtualBufferCaches() {
         return virtualBufferCaches;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/component/TestLsmIndexFileManager.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/component/TestLsmIndexFileManager.java
index 9d8f208..1c75387 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/component/TestLsmIndexFileManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/component/TestLsmIndexFileManager.java
@@ -29,12 +29,11 @@
 import org.apache.hyracks.storage.am.common.api.ITreeIndex;
 import org.apache.hyracks.storage.am.lsm.common.impls.AbstractLSMIndexFileManager;
 import org.apache.hyracks.storage.am.lsm.common.impls.TreeIndexFactory;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 public class TestLsmIndexFileManager extends AbstractLSMIndexFileManager {
 
-    public TestLsmIndexFileManager(IIOManager ioManager, IFileMapProvider fileMapProvider, FileReference file) {
-        super(ioManager, fileMapProvider, file, null);
+    public TestLsmIndexFileManager(IIOManager ioManager, FileReference file) {
+        super(ioManager, file, null);
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/test/LSMIndexFileManagerTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/test/LSMIndexFileManagerTest.java
index 67a6f69..56618e7 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/test/LSMIndexFileManagerTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/test/LSMIndexFileManagerTest.java
@@ -36,12 +36,12 @@
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
 import org.apache.hyracks.api.io.IODeviceHandle;
+import org.apache.hyracks.api.util.IoUtil;
 import org.apache.hyracks.control.nc.io.DefaultDeviceResolver;
 import org.apache.hyracks.control.nc.io.IOManager;
 import org.apache.hyracks.storage.am.lsm.common.api.ILSMIndexFileManager;
 import org.apache.hyracks.storage.am.lsm.common.component.TestLsmIndexFileManager;
 import org.apache.hyracks.storage.am.lsm.common.impls.LSMComponentFileReferences;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.junit.After;
 import org.junit.Before;
@@ -55,7 +55,6 @@
     protected final static SimpleDateFormat simpleDateFormat = new SimpleDateFormat("ddMMyy-hhmmssSS");
     protected final static String sep = System.getProperty("file.separator");
     protected IOManager ioManager;
-    protected IFileMapProvider fileMapProvider;
     protected String baseDir;
     protected FileReference file;
 
@@ -63,7 +62,6 @@
     public void setUp() throws HyracksDataException {
         TestStorageManagerComponentHolder.init(DEFAULT_PAGE_SIZE, DEFAULT_NUM_PAGES, DEFAULT_MAX_OPEN_FILES);
         ioManager = TestStorageManagerComponentHolder.getIOManager();
-        fileMapProvider = TestStorageManagerComponentHolder.getFileMapProvider();
         baseDir = ioManager.getIODevices().get(DEFAULT_IO_DEVICE_ID).getMount() + sep + "lsm_tree"
                 + simpleDateFormat.format(new Date()) + sep;
         File f = new File(baseDir);
@@ -78,7 +76,7 @@
     }
 
     public void sortOrderTest(boolean testFlushFileName) throws InterruptedException, HyracksDataException {
-        ILSMIndexFileManager fileManager = new TestLsmIndexFileManager(ioManager, fileMapProvider, file);
+        ILSMIndexFileManager fileManager = new TestLsmIndexFileManager(ioManager, file);
         LinkedList<String> fileNames = new LinkedList<>();
 
         int numFileNames = 100;
@@ -121,9 +119,11 @@
         String dirPath = ioManager.getIODevices().get(DEFAULT_IO_DEVICE_ID).getMount() + sep + "lsm_tree"
                 + simpleDateFormat.format(new Date()) + sep;
         File f = new File(dirPath);
-        f.mkdirs();
+        if (f.exists()) {
+            IoUtil.delete(f);
+        }
         FileReference file = ioManager.resolveAbsolutePath(f.getAbsolutePath());
-        ILSMIndexFileManager fileManager = new TestLsmIndexFileManager(ioManager, fileMapProvider, file);
+        ILSMIndexFileManager fileManager = new TestLsmIndexFileManager(ioManager, file);
         fileManager.createDirs();
 
         List<FileReference> flushFiles = new ArrayList<>();
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/test/VirtualBufferCacheTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/test/VirtualBufferCacheTest.java
index 59afa19..5ff5a11 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/test/VirtualBufferCacheTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/src/test/java/org/apache/hyracks/storage/am/lsm/common/test/VirtualBufferCacheTest.java
@@ -121,7 +121,7 @@
 
     private void deleteFiles() throws Exception {
         for (int i = 0; i < NUM_FILES; i++) {
-            vbc.deleteFile(fileStates[i].fileId, false);
+            vbc.deleteFile(fileStates[i].fileId);
         }
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/common/LSMInvertedIndexTestHarness.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/common/LSMInvertedIndexTestHarness.java
index daf400f..51fbb58 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/common/LSMInvertedIndexTestHarness.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/common/LSMInvertedIndexTestHarness.java
@@ -48,7 +48,6 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.VirtualBufferCache;
 import org.apache.hyracks.storage.common.buffercache.HeapBufferAllocator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 
@@ -68,7 +67,6 @@
     protected IOManager ioManager;
     protected int ioDeviceId;
     protected IBufferCache diskBufferCache;
-    protected IFileMapProvider diskFileMapProvider;
     protected List<IVirtualBufferCache> virtualBufferCaches;
     protected IHyracksTaskContext ctx;
     protected ILSMIOOperationScheduler ioScheduler;
@@ -109,7 +107,6 @@
         ctx = TestUtils.create(getHyracksFrameSize());
         TestStorageManagerComponentHolder.init(diskPageSize, diskNumPages, diskMaxOpenFiles);
         diskBufferCache = TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        diskFileMapProvider = TestStorageManagerComponentHolder.getFileMapProvider();
         virtualBufferCaches = new ArrayList<>();
         for (int i = 0; i < numMutableComponents; i++) {
             IVirtualBufferCache virtualBufferCache = new MultitenantVirtualBufferCache(
@@ -184,10 +181,6 @@
         return diskBufferCache;
     }
 
-    public IFileMapProvider getDiskFileMapProvider() {
-        return diskFileMapProvider;
-    }
-
     public List<IVirtualBufferCache> getVirtualBufferCaches() {
         return virtualBufferCaches;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndexLifecycleTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndexLifecycleTest.java
index b05b838..0db06e5 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndexLifecycleTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndexLifecycleTest.java
@@ -53,29 +53,22 @@
     public void setup() throws Exception {
         harness.setUp();
         ITypeTraits[] tokenTypeTraits = new ITypeTraits[] { UTF8StringPointable.TYPE_TRAITS };
-        IBinaryComparatorFactory[] tokenCmpFactories = new IBinaryComparatorFactory[] { PointableBinaryComparatorFactory
-                .of(UTF8StringPointable.FACTORY) };
+        IBinaryComparatorFactory[] tokenCmpFactories =
+                new IBinaryComparatorFactory[] { PointableBinaryComparatorFactory.of(UTF8StringPointable.FACTORY) };
         ITypeTraits[] invListTypeTraits = new ITypeTraits[] { IntegerPointable.TYPE_TRAITS };
-        IBinaryComparatorFactory[] invListCmpFactories = new IBinaryComparatorFactory[] { PointableBinaryComparatorFactory
-                .of(IntegerPointable.FACTORY) };
+        IBinaryComparatorFactory[] invListCmpFactories =
+                new IBinaryComparatorFactory[] { PointableBinaryComparatorFactory.of(IntegerPointable.FACTORY) };
         IInvertedListBuilder invListBuilder = new FixedSizeElementInvertedListBuilder(invListTypeTraits);
-        FileReference btreeFile = harness.getIOManager().resolveAbsolutePath(harness.getInvListsFileRef().getFile()
-                .getAbsolutePath()
-                + "_btree");
-        index = new OnDiskInvertedIndex(harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), invListBuilder,
-                invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories,
-                harness.getInvListsFileRef(), btreeFile, harness.getMetadataPageManagerFactory());
+        FileReference btreeFile = harness.getIOManager()
+                .resolveAbsolutePath(harness.getInvListsFileRef().getFile().getAbsolutePath() + "_btree");
+        index = new OnDiskInvertedIndex(harness.getDiskBufferCache(), invListBuilder, invListTypeTraits,
+                invListCmpFactories, tokenTypeTraits, tokenCmpFactories, harness.getInvListsFileRef(), btreeFile,
+                harness.getMetadataPageManagerFactory());
 
     }
 
     @Override
     public void tearDown() throws Exception {
-        try {
-            index.deactivate();
-        } catch (Exception e) {
-        } finally {
-            index.destroy();
-        }
         harness.tearDown();
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/util/LSMInvertedIndexTestContext.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/util/LSMInvertedIndexTestContext.java
index dcc9064..d868118 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/util/LSMInvertedIndexTestContext.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/org/apache/hyracks/storage/am/lsm/invertedindex/util/LSMInvertedIndexTestContext.java
@@ -143,36 +143,34 @@
             }
             case ONDISK: {
                 invIndex = InvertedIndexUtils.createOnDiskInvertedIndex(ioManager, harness.getDiskBufferCache(),
-                        harness.getDiskFileMapProvider(), invListTypeTraits, invListCmpFactories, tokenTypeTraits,
-                        tokenCmpFactories, harness.getInvListsFileRef(), harness.getMetadataPageManagerFactory());
+                        invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories,
+                        harness.getInvListsFileRef(), harness.getMetadataPageManagerFactory());
                 break;
             }
             case PARTITIONED_ONDISK: {
                 invIndex = InvertedIndexUtils.createPartitionedOnDiskInvertedIndex(ioManager,
-                        harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), invListTypeTraits,
-                        invListCmpFactories, tokenTypeTraits, tokenCmpFactories, harness.getInvListsFileRef(),
-                        harness.getMetadataPageManagerFactory());
+                        harness.getDiskBufferCache(), invListTypeTraits, invListCmpFactories, tokenTypeTraits,
+                        tokenCmpFactories, harness.getInvListsFileRef(), harness.getMetadataPageManagerFactory());
                 break;
             }
             case LSM: {
                 invIndex = InvertedIndexUtils.createLSMInvertedIndex(ioManager, harness.getVirtualBufferCaches(),
-                        harness.getDiskFileMapProvider(), invListTypeTraits, invListCmpFactories, tokenTypeTraits,
-                        tokenCmpFactories, tokenizerFactory, harness.getDiskBufferCache(), harness.getOnDiskDir(),
-                        harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
-                        harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
-                        invertedIndexFields, filterTypeTraits, filterCmpFactories, filterFields,
-                        filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, true,
+                        invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories, tokenizerFactory,
+                        harness.getDiskBufferCache(), harness.getOnDiskDir(), harness.getBoomFilterFalsePositiveRate(),
+                        harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(),
+                        harness.getIOOperationCallback(), invertedIndexFields, filterTypeTraits, filterCmpFactories,
+                        filterFields, filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, true,
                         harness.getMetadataPageManagerFactory());
                 break;
             }
             case PARTITIONED_LSM: {
                 invIndex = InvertedIndexUtils.createPartitionedLSMInvertedIndex(ioManager,
-                        harness.getVirtualBufferCaches(), harness.getDiskFileMapProvider(), invListTypeTraits,
-                        invListCmpFactories, tokenTypeTraits, tokenCmpFactories, tokenizerFactory,
-                        harness.getDiskBufferCache(), harness.getOnDiskDir(), harness.getBoomFilterFalsePositiveRate(),
-                        harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(),
-                        harness.getIOOperationCallback(), invertedIndexFields, filterTypeTraits, filterCmpFactories,
-                        filterFields, filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, true,
+                        harness.getVirtualBufferCaches(), invListTypeTraits, invListCmpFactories, tokenTypeTraits,
+                        tokenCmpFactories, tokenizerFactory, harness.getDiskBufferCache(), harness.getOnDiskDir(),
+                        harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
+                        harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
+                        invertedIndexFields, filterTypeTraits, filterCmpFactories, filterFields,
+                        filterFieldsForNonBulkLoadOps, invertedIndexFieldsForNonBulkLoadOps, true,
                         harness.getMetadataPageManagerFactory());
                 break;
             }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeBulkLoadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeBulkLoadTest.java
index 85070a8..8b8da4a 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeBulkLoadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeBulkLoadTest.java
@@ -56,10 +56,9 @@
     protected AbstractRTreeTestContext createTestContext(ISerializerDeserializer[] fieldSerdes,
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
-        return LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, valueProviderFactories,
-                numKeys, rtreePolicyType, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
+        return LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                rtreePolicyType, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
                 harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
                 harness.getMetadataPageManagerFactory());
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeDeleteTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeDeleteTest.java
index 5437713..1cb0155 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeDeleteTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeDeleteTest.java
@@ -56,12 +56,11 @@
     protected AbstractRTreeTestContext createTestContext(ISerializerDeserializer[] fieldSerdes,
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
-        return LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, valueProviderFactories,
-                numKeys, rtreePolicyType, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
-                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(), harness
-                        .getMetadataPageManagerFactory());
+        return LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                rtreePolicyType, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
+                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
+                harness.getMetadataPageManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeExamplesTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeExamplesTest.java
index 00cb223..90e805d 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeExamplesTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeExamplesTest.java
@@ -44,10 +44,10 @@
             RTreePolicyType rtreePolicyType, int[] rtreeFields, int[] btreeFields, ITypeTraits[] filterTypeTraits,
             IBinaryComparatorFactory[] filterCmpFactories, int[] filterFields) throws HyracksDataException {
         return LSMRTreeUtils.createLSMTree(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), typeTraits,
-                rtreeCmpFactories, btreeCmpFactories, valueProviderFactories, rtreePolicyType,
-                harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
-                harness.getIOScheduler(), harness.getIOOperationCallback(),
+                harness.getFileReference(), harness.getDiskBufferCache(), typeTraits, rtreeCmpFactories,
+                btreeCmpFactories, valueProviderFactories, rtreePolicyType, harness.getBoomFilterFalsePositiveRate(),
+                harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(),
+                harness.getIOOperationCallback(),
                 LSMRTreeUtils.proposeBestLinearizer(typeTraits, rtreeCmpFactories.length), rtreeFields, btreeFields,
                 filterTypeTraits, filterCmpFactories, filterFields, true, false,
                 harness.getMetadataPageManagerFactory());
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeInsertTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeInsertTest.java
index 7b112c6..fa8de56 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeInsertTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeInsertTest.java
@@ -56,12 +56,11 @@
     protected AbstractRTreeTestContext createTestContext(ISerializerDeserializer[] fieldSerdes,
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
-        return LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, valueProviderFactories,
-                numKeys, rtreePolicyType, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
-                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(), harness
-                        .getMetadataPageManagerFactory());
+        return LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                rtreePolicyType, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
+                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
+                harness.getMetadataPageManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeLifecycleTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeLifecycleTest.java
index d49e709..6a7106b 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeLifecycleTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeLifecycleTest.java
@@ -39,8 +39,8 @@
     private final ISerializerDeserializer[] fieldSerdes = { IntegerSerializerDeserializer.INSTANCE,
             IntegerSerializerDeserializer.INSTANCE, IntegerSerializerDeserializer.INSTANCE,
             IntegerSerializerDeserializer.INSTANCE, IntegerSerializerDeserializer.INSTANCE };
-    private final IPrimitiveValueProviderFactory[] valueProviderFactories = RTreeUtils
-            .createPrimitiveValueProviderFactories(4, IntegerPointable.FACTORY);
+    private final IPrimitiveValueProviderFactory[] valueProviderFactories =
+            RTreeUtils.createPrimitiveValueProviderFactories(4, IntegerPointable.FACTORY);
     private final int numKeys = 4;
 
     private final LSMRTreeTestHarness harness = new LSMRTreeTestHarness();
@@ -66,23 +66,16 @@
     @Override
     public void setup() throws Exception {
         harness.setUp();
-        testCtx = LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(),
-                harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes, valueProviderFactories,
-                numKeys, RTreePolicyType.RTREE, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
-                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(), harness
-                        .getMetadataPageManagerFactory());
+        testCtx = LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                RTreePolicyType.RTREE, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
+                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
+                harness.getMetadataPageManagerFactory());
         index = testCtx.getIndex();
     }
 
     @Override
     public void tearDown() throws Exception {
-        try {
-            index.deactivate();
-        } catch (Exception e) {
-        } finally {
-            index.destroy();
-        }
         harness.tearDown();
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeMergeTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeMergeTest.java
index feed391..04ec368 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeMergeTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeMergeTest.java
@@ -55,11 +55,11 @@
     protected AbstractRTreeTestContext createTestContext(ISerializerDeserializer[] fieldSerdes,
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
-        return LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(), harness
-                .getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), fieldSerdes,
-                valueProviderFactories, numKeys, rtreePolicyType, harness.getBoomFilterFalsePositiveRate(), harness
-                        .getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(), harness
-                                .getIOOperationCallback(), harness.getMetadataPageManagerFactory());
+        return LSMRTreeTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                rtreePolicyType, harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(),
+                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
+                harness.getMetadataPageManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesBulkLoadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesBulkLoadTest.java
index 91fc323..42b4f68 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesBulkLoadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesBulkLoadTest.java
@@ -57,10 +57,9 @@
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
         return LSMRTreeWithAntiMatterTuplesTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(),
-                fieldSerdes, valueProviderFactories, numKeys, rtreePolicyType, harness.getMergePolicy(),
-                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
-                harness.getMetadataPageManagerFactory());
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                rtreePolicyType, harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(),
+                harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesDeleteTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesDeleteTest.java
index 6ab4967..d643b1c 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesDeleteTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesDeleteTest.java
@@ -57,10 +57,9 @@
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
         return LSMRTreeWithAntiMatterTuplesTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(),
-                fieldSerdes, valueProviderFactories, numKeys, rtreePolicyType, harness.getMergePolicy(),
-                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
-                harness.getMetadataPageManagerFactory());
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                rtreePolicyType, harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(),
+                harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesExamplesTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesExamplesTest.java
index 835ae64..ea90a43 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesExamplesTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesExamplesTest.java
@@ -44,8 +44,8 @@
             RTreePolicyType rtreePolicyType, int[] rtreeFields, int[] btreeFields, ITypeTraits[] filterTypeTraits,
             IBinaryComparatorFactory[] filterCmpFactories, int[] filterFields) throws HyracksDataException {
         return LSMRTreeUtils.createLSMTreeWithAntiMatterTuples(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), typeTraits,
-                rtreeCmpFactories, btreeCmpFactories, valueProviderFactories, rtreePolicyType, harness.getMergePolicy(),
+                harness.getFileReference(), harness.getDiskBufferCache(), typeTraits, rtreeCmpFactories,
+                btreeCmpFactories, valueProviderFactories, rtreePolicyType, harness.getMergePolicy(),
                 harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
                 LSMRTreeUtils.proposeBestLinearizer(typeTraits, rtreeCmpFactories.length), rtreeFields,
                 filterTypeTraits, filterCmpFactories, filterFields, true, false,
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesInsertTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesInsertTest.java
index c881b39..abc9271 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesInsertTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesInsertTest.java
@@ -57,10 +57,9 @@
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
         return LSMRTreeWithAntiMatterTuplesTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(),
-                fieldSerdes, valueProviderFactories, numKeys, rtreePolicyType, harness.getMergePolicy(),
-                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(), harness
-                        .getMetadataPageManagerFactory());
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                rtreePolicyType, harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(),
+                harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesLifecycleTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesLifecycleTest.java
index acd40dd..cd8a465 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesLifecycleTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesLifecycleTest.java
@@ -39,8 +39,8 @@
     private final ISerializerDeserializer[] fieldSerdes = { IntegerSerializerDeserializer.INSTANCE,
             IntegerSerializerDeserializer.INSTANCE, IntegerSerializerDeserializer.INSTANCE,
             IntegerSerializerDeserializer.INSTANCE, IntegerSerializerDeserializer.INSTANCE };
-    private final IPrimitiveValueProviderFactory[] valueProviderFactories = RTreeUtils
-            .createPrimitiveValueProviderFactories(4, IntegerPointable.FACTORY);
+    private final IPrimitiveValueProviderFactory[] valueProviderFactories =
+            RTreeUtils.createPrimitiveValueProviderFactories(4, IntegerPointable.FACTORY);
     private final int numKeys = 4;
 
     private final LSMRTreeTestHarness harness = new LSMRTreeTestHarness();
@@ -66,22 +66,16 @@
     @Override
     public void setup() throws Exception {
         harness.setUp();
-        testCtx = LSMRTreeWithAntiMatterTuplesTestContext.create(harness.getIOManager(), harness
-                .getVirtualBufferCaches(), harness.getFileReference(), harness.getDiskBufferCache(), harness
-                        .getDiskFileMapProvider(), fieldSerdes, valueProviderFactories, numKeys, RTreePolicyType.RTREE,
-                harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(), harness
-                        .getIOOperationCallback(), harness.getMetadataPageManagerFactory());
+        testCtx = LSMRTreeWithAntiMatterTuplesTestContext.create(harness.getIOManager(),
+                harness.getVirtualBufferCaches(), harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes,
+                valueProviderFactories, numKeys, RTreePolicyType.RTREE, harness.getMergePolicy(),
+                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
+                harness.getMetadataPageManagerFactory());
         index = testCtx.getIndex();
     }
 
     @Override
     public void tearDown() throws Exception {
-        try {
-            index.deactivate();
-        } catch (Exception e) {
-        } finally {
-            index.destroy();
-        }
         harness.tearDown();
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesMergeTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesMergeTest.java
index 59c64db..cdd60f9 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesMergeTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesMergeTest.java
@@ -56,10 +56,9 @@
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
         return LSMRTreeWithAntiMatterTuplesTestContext.create(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(),
-                fieldSerdes, valueProviderFactories, numKeys, rtreePolicyType, harness.getMergePolicy(),
-                harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
-                harness.getMetadataPageManagerFactory());
+                harness.getFileReference(), harness.getDiskBufferCache(), fieldSerdes, valueProviderFactories, numKeys,
+                rtreePolicyType, harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(),
+                harness.getIOOperationCallback(), harness.getMetadataPageManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/multithread/LSMRTreeMultiThreadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/multithread/LSMRTreeMultiThreadTest.java
index e319d1d..91b38cb 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/multithread/LSMRTreeMultiThreadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/multithread/LSMRTreeMultiThreadTest.java
@@ -61,10 +61,10 @@
             IBinaryComparatorFactory[] btreeCmpFactories, IPrimitiveValueProviderFactory[] valueProviderFactories,
             RTreePolicyType rtreePolicyType, int[] btreeFields) throws HyracksDataException {
         return LSMRTreeUtils.createLSMTree(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), typeTraits,
-                rtreeCmpFactories, btreeCmpFactories, valueProviderFactories, rtreePolicyType,
-                harness.getBoomFilterFalsePositiveRate(), harness.getMergePolicy(), harness.getOperationTracker(),
-                harness.getIOScheduler(), harness.getIOOperationCallback(),
+                harness.getFileReference(), harness.getDiskBufferCache(), typeTraits, rtreeCmpFactories,
+                btreeCmpFactories, valueProviderFactories, rtreePolicyType, harness.getBoomFilterFalsePositiveRate(),
+                harness.getMergePolicy(), harness.getOperationTracker(), harness.getIOScheduler(),
+                harness.getIOOperationCallback(),
                 LSMRTreeUtils.proposeBestLinearizer(typeTraits, rtreeCmpFactories.length), null, btreeFields, null,
                 null, null, true, false, harness.getMetadataPageManagerFactory());
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/multithread/LSMRTreeWithAntiMatterTuplesMultiThreadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/multithread/LSMRTreeWithAntiMatterTuplesMultiThreadTest.java
index 987e015..954538b 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/multithread/LSMRTreeWithAntiMatterTuplesMultiThreadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/multithread/LSMRTreeWithAntiMatterTuplesMultiThreadTest.java
@@ -62,8 +62,8 @@
             IBinaryComparatorFactory[] btreeCmpFactories, IPrimitiveValueProviderFactory[] valueProviderFactories,
             RTreePolicyType rtreePolicyType, int[] btreeFields) throws HyracksDataException {
         return LSMRTreeUtils.createLSMTreeWithAntiMatterTuples(harness.getIOManager(), harness.getVirtualBufferCaches(),
-                harness.getFileReference(), harness.getDiskBufferCache(), harness.getDiskFileMapProvider(), typeTraits,
-                rtreeCmpFactories, btreeCmpFactories, valueProviderFactories, rtreePolicyType, harness.getMergePolicy(),
+                harness.getFileReference(), harness.getDiskBufferCache(), typeTraits, rtreeCmpFactories,
+                btreeCmpFactories, valueProviderFactories, rtreePolicyType, harness.getMergePolicy(),
                 harness.getOperationTracker(), harness.getIOScheduler(), harness.getIOOperationCallback(),
                 LSMRTreeUtils.proposeBestLinearizer(typeTraits, rtreeCmpFactories.length), null, null, null, null, true,
                 false, harness.getMetadataPageManagerFactory());
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestContext.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestContext.java
index d55daef..753fc93 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestContext.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestContext.java
@@ -43,7 +43,6 @@
 import org.apache.hyracks.storage.am.rtree.RTreeCheckTuple;
 import org.apache.hyracks.storage.am.rtree.frames.RTreePolicyType;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 @SuppressWarnings("rawtypes")
 public final class LSMRTreeTestContext extends AbstractRTreeTestContext {
@@ -75,15 +74,14 @@
     }
 
     public static LSMRTreeTestContext create(IIOManager ioManager, List<IVirtualBufferCache> virtualBufferCaches,
-            FileReference file,
-            IBufferCache diskBufferCache, IFileMapProvider diskFileMapProvider, ISerializerDeserializer[] fieldSerdes,
+            FileReference file, IBufferCache diskBufferCache, ISerializerDeserializer[] fieldSerdes,
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeyFields, RTreePolicyType rtreePolicyType,
             double bloomFilterFalsePositiveRate, ILSMMergePolicy mergePolicy, ILSMOperationTracker opTracker,
             ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
             IMetadataPageManagerFactory metadataPageManagerFactory) throws Exception {
         ITypeTraits[] typeTraits = SerdeUtils.serdesToTypeTraits(fieldSerdes);
-        IBinaryComparatorFactory[] rtreeCmpFactories = SerdeUtils.serdesToComparatorFactories(fieldSerdes,
-                numKeyFields);
+        IBinaryComparatorFactory[] rtreeCmpFactories =
+                SerdeUtils.serdesToComparatorFactories(fieldSerdes, numKeyFields);
         int numBtreeFields = fieldSerdes.length - numKeyFields;
         ISerializerDeserializer[] btreeFieldSerdes = new ISerializerDeserializer[numBtreeFields];
         int[] btreeFields = new int[numBtreeFields];
@@ -91,11 +89,10 @@
             btreeFields[i] = numKeyFields + i;
             btreeFieldSerdes[i] = fieldSerdes[numKeyFields + i];
         }
-        IBinaryComparatorFactory[] btreeCmpFactories = SerdeUtils.serdesToComparatorFactories(btreeFieldSerdes,
-                numBtreeFields);
+        IBinaryComparatorFactory[] btreeCmpFactories =
+                SerdeUtils.serdesToComparatorFactories(btreeFieldSerdes, numBtreeFields);
         LSMRTree lsmTree = LSMRTreeUtils.createLSMTree(ioManager, virtualBufferCaches, file, diskBufferCache,
-                diskFileMapProvider, typeTraits, rtreeCmpFactories, btreeCmpFactories, valueProviderFactories,
-                rtreePolicyType,
+                typeTraits, rtreeCmpFactories, btreeCmpFactories, valueProviderFactories, rtreePolicyType,
                 bloomFilterFalsePositiveRate, mergePolicy, opTracker, ioScheduler, ioOpCallback,
                 LSMRTreeUtils.proposeBestLinearizer(typeTraits, rtreeCmpFactories.length), null, btreeFields, null,
                 null, null, true, false, metadataPageManagerFactory);
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestHarness.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestHarness.java
index 1c459a1..4af7c6e 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestHarness.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestHarness.java
@@ -48,7 +48,6 @@
 import org.apache.hyracks.storage.am.lsm.common.impls.VirtualBufferCache;
 import org.apache.hyracks.storage.common.buffercache.HeapBufferAllocator;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 
@@ -69,7 +68,6 @@
     protected IOManager ioManager;
     protected int ioDeviceId;
     protected IBufferCache diskBufferCache;
-    protected IFileMapProvider diskFileMapProvider;
     protected List<IVirtualBufferCache> virtualBufferCaches;
     protected IHyracksTaskContext ctx;
     protected ILSMIOOperationScheduler ioScheduler;
@@ -109,7 +107,6 @@
         ctx = TestUtils.create(getHyracksFrameSize());
         TestStorageManagerComponentHolder.init(diskPageSize, diskNumPages, diskMaxOpenFiles);
         diskBufferCache = TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        diskFileMapProvider = TestStorageManagerComponentHolder.getFileMapProvider();
         virtualBufferCaches = new ArrayList<>();
         for (int i = 0; i < numMutableComponents; i++) {
             IVirtualBufferCache virtualBufferCache =
@@ -174,10 +171,6 @@
         return diskBufferCache;
     }
 
-    public IFileMapProvider getDiskFileMapProvider() {
-        return diskFileMapProvider;
-    }
-
     public List<IVirtualBufferCache> getVirtualBufferCaches() {
         return virtualBufferCaches;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeWithAntiMatterTuplesTestContext.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeWithAntiMatterTuplesTestContext.java
index 0653ddf..975a3d3 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeWithAntiMatterTuplesTestContext.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/org/apache/hyracks/storage/am/lsm/rtree/util/LSMRTreeWithAntiMatterTuplesTestContext.java
@@ -43,7 +43,6 @@
 import org.apache.hyracks.storage.am.rtree.RTreeCheckTuple;
 import org.apache.hyracks.storage.am.rtree.frames.RTreePolicyType;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 @SuppressWarnings("rawtypes")
 public final class LSMRTreeWithAntiMatterTuplesTestContext extends AbstractRTreeTestContext {
@@ -75,26 +74,23 @@
     }
 
     public static LSMRTreeWithAntiMatterTuplesTestContext create(IIOManager ioManager,
-            List<IVirtualBufferCache> virtualBufferCaches,
-            FileReference file, IBufferCache diskBufferCache, IFileMapProvider diskFileMapProvider,
+            List<IVirtualBufferCache> virtualBufferCaches, FileReference file, IBufferCache diskBufferCache,
             ISerializerDeserializer[] fieldSerdes, IPrimitiveValueProviderFactory[] valueProviderFactories,
             int numKeyFields, RTreePolicyType rtreePolicyType, ILSMMergePolicy mergePolicy,
             ILSMOperationTracker opTracker, ILSMIOOperationScheduler ioScheduler, ILSMIOOperationCallback ioOpCallback,
-            IMetadataPageManagerFactory metadataPageManagerFactory)
-            throws Exception {
+            IMetadataPageManagerFactory metadataPageManagerFactory) throws Exception {
         ITypeTraits[] typeTraits = SerdeUtils.serdesToTypeTraits(fieldSerdes);
-        IBinaryComparatorFactory[] rtreeCmpFactories = SerdeUtils.serdesToComparatorFactories(fieldSerdes,
-                numKeyFields);
-        IBinaryComparatorFactory[] btreeCmpFactories = SerdeUtils.serdesToComparatorFactories(fieldSerdes,
-                fieldSerdes.length);
+        IBinaryComparatorFactory[] rtreeCmpFactories =
+                SerdeUtils.serdesToComparatorFactories(fieldSerdes, numKeyFields);
+        IBinaryComparatorFactory[] btreeCmpFactories =
+                SerdeUtils.serdesToComparatorFactories(fieldSerdes, fieldSerdes.length);
         LSMRTreeWithAntiMatterTuples lsmTree = LSMRTreeUtils.createLSMTreeWithAntiMatterTuples(ioManager,
-                virtualBufferCaches,
-                file, diskBufferCache, diskFileMapProvider, typeTraits, rtreeCmpFactories, btreeCmpFactories,
+                virtualBufferCaches, file, diskBufferCache, typeTraits, rtreeCmpFactories, btreeCmpFactories,
                 valueProviderFactories, rtreePolicyType, mergePolicy, opTracker, ioScheduler, ioOpCallback,
                 LSMRTreeUtils.proposeBestLinearizer(typeTraits, rtreeCmpFactories.length), null, null, null, null, true,
                 false, metadataPageManagerFactory);
-        LSMRTreeWithAntiMatterTuplesTestContext testCtx = new LSMRTreeWithAntiMatterTuplesTestContext(fieldSerdes,
-                lsmTree);
+        LSMRTreeWithAntiMatterTuplesTestContext testCtx =
+                new LSMRTreeWithAntiMatterTuplesTestContext(fieldSerdes, lsmTree);
         return testCtx;
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeBulkLoadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeBulkLoadTest.java
index 4cc6c7d..6f934cd 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeBulkLoadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeBulkLoadTest.java
@@ -54,9 +54,8 @@
     protected AbstractRTreeTestContext createTestContext(ISerializerDeserializer[] fieldSerdes,
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
-        return RTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, valueProviderFactories, numKeys, rtreePolicyType,
-                harness.getMetadataManagerFactory());
+        return RTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes,
+                valueProviderFactories, numKeys, rtreePolicyType, harness.getMetadataManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeDeleteTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeDeleteTest.java
index 803a130..ce1ba96 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeDeleteTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeDeleteTest.java
@@ -54,9 +54,8 @@
     protected AbstractRTreeTestContext createTestContext(ISerializerDeserializer[] fieldSerdes,
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
-        return RTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, valueProviderFactories, numKeys, rtreePolicyType,
-                harness.getMetadataManagerFactory());
+        return RTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes,
+                valueProviderFactories, numKeys, rtreePolicyType, harness.getMetadataManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeExamplesTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeExamplesTest.java
index ecc6fe4..999fd65 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeExamplesTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeExamplesTest.java
@@ -53,9 +53,8 @@
             IBinaryComparatorFactory[] btreeCmpFactories, IPrimitiveValueProviderFactory[] valueProviderFactories,
             RTreePolicyType rtreePolicyType, int[] rtreeFields, int[] btreeFields, ITypeTraits[] filterTypeTraits,
             IBinaryComparatorFactory[] filterCmpFactories, int[] filterFields) throws HyracksDataException {
-        return RTreeUtils.createRTree(harness.getBufferCache(), harness.getFileMapProvider(), typeTraits,
-                valueProviderFactories, rtreeCmpFactories, rtreePolicyType, harness.getFileReference(), false,
-                harness.getMetadataManagerFactory());
+        return RTreeUtils.createRTree(harness.getBufferCache(), typeTraits, valueProviderFactories, rtreeCmpFactories,
+                rtreePolicyType, harness.getFileReference(), false, harness.getMetadataManagerFactory());
     }
 
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeInsertTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeInsertTest.java
index 57a2ac3..93be987 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeInsertTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeInsertTest.java
@@ -54,9 +54,8 @@
     protected AbstractRTreeTestContext createTestContext(ISerializerDeserializer[] fieldSerdes,
             IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeys, RTreePolicyType rtreePolicyType)
             throws Exception {
-        return RTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, valueProviderFactories, numKeys, rtreePolicyType,
-                harness.getMetadataManagerFactory());
+        return RTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes,
+                valueProviderFactories, numKeys, rtreePolicyType, harness.getMetadataManagerFactory());
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeLifecycleTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeLifecycleTest.java
index b7eb961..9745c08 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeLifecycleTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeLifecycleTest.java
@@ -42,8 +42,8 @@
     private final ISerializerDeserializer[] fieldSerdes = { IntegerSerializerDeserializer.INSTANCE,
             IntegerSerializerDeserializer.INSTANCE, IntegerSerializerDeserializer.INSTANCE,
             IntegerSerializerDeserializer.INSTANCE, IntegerSerializerDeserializer.INSTANCE };
-    private final IPrimitiveValueProviderFactory[] valueProviderFactories = RTreeUtils
-            .createPrimitiveValueProviderFactories(4, IntegerPointable.FACTORY);
+    private final IPrimitiveValueProviderFactory[] valueProviderFactories =
+            RTreeUtils.createPrimitiveValueProviderFactories(4, IntegerPointable.FACTORY);
     private final int numKeys = 4;
 
     @SuppressWarnings("rawtypes")
@@ -53,20 +53,13 @@
     @Override
     public void setup() throws Exception {
         harness.setUp();
-        testCtx = RTreeTestContext.create(harness.getBufferCache(), harness.getFileMapProvider(),
-                harness.getFileReference(), fieldSerdes, valueProviderFactories, numKeys, RTreePolicyType.RTREE,
-                harness.getMetadataManagerFactory());
+        testCtx = RTreeTestContext.create(harness.getBufferCache(), harness.getFileReference(), fieldSerdes,
+                valueProviderFactories, numKeys, RTreePolicyType.RTREE, harness.getMetadataManagerFactory());
         index = testCtx.getIndex();
     }
 
     @Override
     public void tearDown() throws HyracksDataException {
-        try {
-            testCtx.getIndex().deactivate();
-        } catch (Exception e) {
-        } finally {
-            testCtx.getIndex().destroy();
-        }
         harness.tearDown();
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeSearchCursorTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeSearchCursorTest.java
index bdb6267..31d54ae 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeSearchCursorTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/RTreeSearchCursorTest.java
@@ -121,8 +121,8 @@
         IRTreeLeafFrame leafFrame = (IRTreeLeafFrame) leafFrameFactory.createFrame();
         IMetadataPageManager freePageManager = new LinkedMetaDataPageManager(bufferCache, metaFrameFactory);
 
-        RTree rtree = new RTree(bufferCache, harness.getFileMapProvider(), freePageManager, interiorFrameFactory,
-                leafFrameFactory, cmpFactories, fieldCount, harness.getFileReference(), false);
+        RTree rtree = new RTree(bufferCache, freePageManager, interiorFrameFactory, leafFrameFactory, cmpFactories,
+                fieldCount, harness.getFileReference(), false);
         rtree.create();
         rtree.activate();
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/multithread/RTreeMultiThreadTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/multithread/RTreeMultiThreadTest.java
index 0a27be3..faa63c5 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/multithread/RTreeMultiThreadTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/multithread/RTreeMultiThreadTest.java
@@ -60,9 +60,8 @@
     protected ITreeIndex createTreeIndex(ITypeTraits[] typeTraits, IBinaryComparatorFactory[] rtreeCmpFactories,
             IBinaryComparatorFactory[] btreeCmpFactories, IPrimitiveValueProviderFactory[] valueProviderFactories,
             RTreePolicyType rtreePolicyType, int[] btreeFields) throws HyracksDataException {
-        return RTreeUtils.createRTree(harness.getBufferCache(), harness.getFileMapProvider(), typeTraits,
-                valueProviderFactories, rtreeCmpFactories, rtreePolicyType, harness.getFileReference(), false,
-                harness.getMetadataManagerFactory());
+        return RTreeUtils.createRTree(harness.getBufferCache(), typeTraits, valueProviderFactories, rtreeCmpFactories,
+                rtreePolicyType, harness.getFileReference(), false, harness.getMetadataManagerFactory());
 
     }
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/utils/RTreeTestContext.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/utils/RTreeTestContext.java
index a738e2f..bf70dc1 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/utils/RTreeTestContext.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/utils/RTreeTestContext.java
@@ -33,7 +33,6 @@
 import org.apache.hyracks.storage.am.rtree.impls.RTree;
 import org.apache.hyracks.storage.am.rtree.util.RTreeUtils;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 
 @SuppressWarnings("rawtypes")
 public class RTreeTestContext extends AbstractRTreeTestContext {
@@ -54,15 +53,14 @@
         return rtree.getComparatorFactories();
     }
 
-    public static RTreeTestContext create(IBufferCache bufferCache, IFileMapProvider fileMapProvider,
-            FileReference file, ISerializerDeserializer[] fieldSerdes,
-            IPrimitiveValueProviderFactory[] valueProviderFactories, int numKeyFields, RTreePolicyType rtreePolicyType,
-            IPageManagerFactory pageManagerFactory)
+    public static RTreeTestContext create(IBufferCache bufferCache, FileReference file,
+            ISerializerDeserializer[] fieldSerdes, IPrimitiveValueProviderFactory[] valueProviderFactories,
+            int numKeyFields, RTreePolicyType rtreePolicyType, IPageManagerFactory pageManagerFactory)
             throws Exception {
         ITypeTraits[] typeTraits = SerdeUtils.serdesToTypeTraits(fieldSerdes);
         IBinaryComparatorFactory[] cmpFactories = SerdeUtils.serdesToComparatorFactories(fieldSerdes, numKeyFields);
-        RTree rtree = RTreeUtils.createRTree(bufferCache, fileMapProvider, typeTraits, valueProviderFactories,
-                cmpFactories, rtreePolicyType, file, false, pageManagerFactory);
+        RTree rtree = RTreeUtils.createRTree(bufferCache, typeTraits, valueProviderFactories, cmpFactories,
+                rtreePolicyType, file, false, pageManagerFactory);
         RTreeTestContext testCtx = new RTreeTestContext(fieldSerdes, rtree);
         return testCtx;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/utils/RTreeTestHarness.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/utils/RTreeTestHarness.java
index c9975cd..5ad777d 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/utils/RTreeTestHarness.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/org/apache/hyracks/storage/am/rtree/utils/RTreeTestHarness.java
@@ -32,7 +32,6 @@
 import org.apache.hyracks.storage.am.common.freepage.LinkedMetadataPageManagerFactory;
 import org.apache.hyracks.storage.am.config.AccessMethodTestsConfig;
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 
@@ -47,7 +46,6 @@
 
     protected IHyracksTaskContext ctx;
     protected IBufferCache bufferCache;
-    protected IFileMapProvider fileMapProvider;
     protected int treeFileId;
 
     protected final Random rnd = new Random();
@@ -78,7 +76,6 @@
         file = ioManager.resolve(fileName);
         ctx = TestUtils.create(getHyracksFrameSize());
         bufferCache = TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        fileMapProvider = TestStorageManagerComponentHolder.getFileMapProvider();
         rnd.setSeed(RANDOM_SEED);
     }
 
@@ -96,10 +93,6 @@
         return bufferCache;
     }
 
-    public IFileMapProvider getFileMapProvider() {
-        return fileMapProvider;
-    }
-
     public String getFileName() {
         return fileName;
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/src/test/java/org/apache/hyracks/storage/common/BufferCacheRegressionTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/src/test/java/org/apache/hyracks/storage/common/BufferCacheRegressionTest.java
index cccbc5d..3a857cc 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/src/test/java/org/apache/hyracks/storage/common/BufferCacheRegressionTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/src/test/java/org/apache/hyracks/storage/common/BufferCacheRegressionTest.java
@@ -34,10 +34,10 @@
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 import org.junit.After;
+import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -73,7 +73,13 @@
     @Test
     public void testFlushBehaviorOnFileEviction() throws IOException {
         flushBehaviorTest(true);
-        flushBehaviorTest(false);
+        boolean exceptionCaught = false;
+        try {
+            flushBehaviorTest(false);
+        } catch (Exception e) {
+            exceptionCaught = true;
+        }
+        Assert.assertTrue(exceptionCaught);
     }
 
     private void flushBehaviorTest(boolean deleteFile) throws IOException {
@@ -81,12 +87,10 @@
 
         IBufferCache bufferCache =
                 TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        IFileMapProvider fmp = TestStorageManagerComponentHolder.getFileMapProvider();
         IOManager ioManager = TestStorageManagerComponentHolder.getIOManager();
 
         FileReference firstFileRef = ioManager.resolve(fileName);
-        bufferCache.createFile(firstFileRef);
-        int firstFileId = fmp.lookupFileId(firstFileRef);
+        int firstFileId = bufferCache.createFile(firstFileRef);
         bufferCache.openFile(firstFileId);
 
         // Fill the first page with known data and make it dirty by write
@@ -104,13 +108,12 @@
         }
         bufferCache.closeFile(firstFileId);
         if (deleteFile) {
-            bufferCache.deleteFile(firstFileId, false);
+            bufferCache.deleteFile(firstFileId);
         }
 
         // Create a file with the same name.
         FileReference secondFileRef = ioManager.resolve(fileName);
-        bufferCache.createFile(secondFileRef);
-        int secondFileId = fmp.lookupFileId(secondFileRef);
+        int secondFileId = bufferCache.createFile(secondFileRef);
 
         // This open will replace the firstFileRef's slot in the BufferCache,
         // causing it's pages to be cleaned up. We want to make sure that those
@@ -147,7 +150,7 @@
         ioManager.close(testFileHandle);
         bufferCache.closeFile(secondFileId);
         if (deleteFile) {
-            bufferCache.deleteFile(secondFileId, false);
+            bufferCache.deleteFile(secondFileId);
         }
         bufferCache.close();
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/src/test/java/org/apache/hyracks/storage/common/BufferCacheTest.java b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/src/test/java/org/apache/hyracks/storage/common/BufferCacheTest.java
index 4a08881..e688ee5 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/src/test/java/org/apache/hyracks/storage/common/BufferCacheTest.java
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/src/test/java/org/apache/hyracks/storage/common/BufferCacheTest.java
@@ -35,7 +35,6 @@
 import org.apache.hyracks.storage.common.buffercache.IBufferCache;
 import org.apache.hyracks.storage.common.buffercache.ICachedPage;
 import org.apache.hyracks.storage.common.file.BufferedFileHandle;
-import org.apache.hyracks.storage.common.file.IFileMapProvider;
 import org.apache.hyracks.test.support.TestStorageManagerComponentHolder;
 import org.apache.hyracks.test.support.TestUtils;
 import org.junit.AfterClass;
@@ -65,12 +64,11 @@
         TestStorageManagerComponentHolder.init(PAGE_SIZE, NUM_PAGES, MAX_OPEN_FILES);
         IBufferCache bufferCache =
                 TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        IFileMapProvider fmp = TestStorageManagerComponentHolder.getFileMapProvider();
+
         IIOManager ioManager = TestStorageManagerComponentHolder.getIOManager();
         String fileName = getFileName();
         FileReference file = ioManager.resolve(fileName);
-        bufferCache.createFile(file);
-        int fileId = fmp.lookupFileId(file);
+        int fileId = bufferCache.createFile(file);
         int num = 10;
         int testPageId = 0;
 
@@ -148,7 +146,6 @@
         TestStorageManagerComponentHolder.init(PAGE_SIZE, NUM_PAGES, MAX_OPEN_FILES);
         IBufferCache bufferCache =
                 TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        IFileMapProvider fmp = TestStorageManagerComponentHolder.getFileMapProvider();
         IIOManager ioManager = TestStorageManagerComponentHolder.getIOManager();
 
         List<Integer> fileIds = new ArrayList<>();
@@ -157,8 +154,7 @@
             String fileName = getFileName();
 
             FileReference file = ioManager.resolve(fileName);
-            bufferCache.createFile(file);
-            int fileId = fmp.lookupFileId(file);
+            int fileId = bufferCache.createFile(file);
             bufferCache.openFile(fileId);
             fileIds.add(fileId);
         }
@@ -169,8 +165,7 @@
         try {
             String fileName = getFileName();
             FileReference file = ioManager.resolve(fileName);
-            bufferCache.createFile(file);
-            int fileId = fmp.lookupFileId(file);
+            int fileId = bufferCache.createFile(file);
             bufferCache.openFile(fileId);
         } catch (HyracksDataException e) {
             exceptionThrown = true;
@@ -187,8 +182,7 @@
         try {
             String fileName = getFileName();
             FileReference file = ioManager.resolve(fileName);
-            bufferCache.createFile(file);
-            int fileId = fmp.lookupFileId(file);
+            int fileId = bufferCache.createFile(file);
             bufferCache.openFile(fileId);
             fileIds.add(fileId);
 
@@ -209,7 +203,6 @@
         TestStorageManagerComponentHolder.init(PAGE_SIZE, NUM_PAGES, MAX_OPEN_FILES);
         IBufferCache bufferCache =
                 TestStorageManagerComponentHolder.getBufferCache(ctx.getJobletContext().getServiceContext());
-        IFileMapProvider fmp = TestStorageManagerComponentHolder.getFileMapProvider();
         IIOManager ioManager = TestStorageManagerComponentHolder.getIOManager();
 
         List<Integer> fileIds = new ArrayList<>();
@@ -221,8 +214,7 @@
         for (int i = 0; i < MAX_OPEN_FILES; i++) {
             String fileName = getFileName();
             FileReference file = ioManager.resolve(fileName);
-            bufferCache.createFile(file);
-            int fileId = fmp.lookupFileId(file);
+            int fileId = bufferCache.createFile(file);
             bufferCache.openFile(fileId);
             fileIds.add(fileId);
 
@@ -249,8 +241,7 @@
         try {
             String fileName = getFileName();
             FileReference file = ioManager.resolve(fileName);
-            bufferCache.createFile(file);
-            int fileId = fmp.lookupFileId(file);
+            int fileId = bufferCache.createFile(file);
             bufferCache.openFile(fileId);
         } catch (HyracksDataException e) {
             exceptionThrown = true;
@@ -271,8 +262,7 @@
         for (int i = 0; i < filesToClose; i++) {
             String fileName = getFileName();
             FileReference file = ioManager.resolve(fileName);
-            bufferCache.createFile(file);
-            int fileId = fmp.lookupFileId(file);
+            int fileId = bufferCache.createFile(file);
             bufferCache.openFile(fileId);
             fileIds.add(fileId);
         }
@@ -281,8 +271,7 @@
         try {
             String fileName = getFileName();
             FileReference file = ioManager.resolve(fileName);
-            bufferCache.createFile(file);
-            int fileId = fmp.lookupFileId(file);
+            int fileId = bufferCache.createFile(file);
             bufferCache.openFile(fileId);
         } catch (HyracksDataException e) {
             exceptionThrown = true;
diff --git a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/JSONUtil.java b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/JSONUtil.java
index 7075417..0cb87dd 100644
--- a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/JSONUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/JSONUtil.java
@@ -20,6 +20,8 @@
 
 import java.io.IOException;
 import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
 import java.util.logging.Logger;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
@@ -174,4 +176,45 @@
                 return null;
         }
     }
+
+    /**
+     * Write map as a json string. if an object is a string and starts with a { or [
+     * then it assumes that it is a json object or a json array and so it doesn't surround
+     * it with "
+     *
+     * @param map
+     *            a map representing the json object
+     * @return
+     *         a String representation of the json object
+     */
+    public static String fromMap(Map<String, Object> map) {
+        StringBuilder aString = new StringBuilder();
+        aString.append("{ ");
+        boolean first = true;
+        for (Entry<String, Object> entry : map.entrySet()) {
+            if (!first) {
+                aString.append(", ");
+            }
+            aString.append("\"");
+            aString.append(entry.getKey());
+            aString.append("\"");
+            aString.append(" : ");
+            Object value = entry.getValue();
+            if (value instanceof String) {
+                String strValue = (String) value;
+                if (strValue.startsWith("{") || strValue.startsWith("[")) {
+                    aString.append(value);
+                } else {
+                    aString.append("\"");
+                    aString.append(value);
+                    aString.append("\"");
+                }
+            } else {
+                aString.append(value);
+            }
+            first = false;
+        }
+        aString.append(" }");
+        return aString.toString();
+    }
 }