diff --git a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/InsertPipelineExample.java b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/InsertPipelineExample.java
index 876b1a9..05bb0c2 100644
--- a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/InsertPipelineExample.java
+++ b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/InsertPipelineExample.java
@@ -41,10 +41,12 @@
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.dataflow.std.misc.NullSinkOperatorDescriptor;
 import edu.uci.ics.hyracks.examples.btree.helper.DataGenOperatorDescriptor;
+import edu.uci.ics.hyracks.examples.btree.helper.IndexArtifactMapProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.IndexRegistryProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.StorageManagerInterface;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.TreeIndexInsertUpdateDeleteOperatorDescriptor;
@@ -127,6 +129,7 @@
 
         IIndexRegistryProvider<IIndex> indexRegistryProvider = IndexRegistryProvider.INSTANCE;
         IStorageManagerInterface storageManager = StorageManagerInterface.INSTANCE;
+        IIndexArtifactMapProvider indexArtifactMapProvider = IndexArtifactMapProvider.INSTANCE;
 
         // prepare insertion into primary index
         // tuples to be put into B-Tree shall have 4 fields
@@ -154,7 +157,7 @@
         TreeIndexInsertUpdateDeleteOperatorDescriptor primaryInsert = new TreeIndexInsertUpdateDeleteOperatorDescriptor(
                 spec, recDesc, storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, primaryFieldPermutation, IndexOp.INSERT, dataflowHelperFactory,
-                null, NoOpOperationCallbackProvider.INSTANCE);
+                null, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         JobHelper.createPartitionConstraint(spec, primaryInsert, splitNCs);
 
         // prepare insertion into secondary index
@@ -178,7 +181,7 @@
         TreeIndexInsertUpdateDeleteOperatorDescriptor secondaryInsert = new TreeIndexInsertUpdateDeleteOperatorDescriptor(
                 spec, recDesc, storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, secondaryFieldPermutation, IndexOp.INSERT, dataflowHelperFactory,
-                null, NoOpOperationCallbackProvider.INSTANCE);
+                null, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         JobHelper.createPartitionConstraint(spec, secondaryInsert, splitNCs);
 
         // end the insert pipeline at this sink operator
diff --git a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/PrimaryIndexBulkLoadExample.java b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/PrimaryIndexBulkLoadExample.java
index 2c2d481..1b5fe7d 100644
--- a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/PrimaryIndexBulkLoadExample.java
+++ b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/PrimaryIndexBulkLoadExample.java
@@ -40,10 +40,12 @@
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.dataflow.std.sort.ExternalSortOperatorDescriptor;
 import edu.uci.ics.hyracks.examples.btree.helper.DataGenOperatorDescriptor;
+import edu.uci.ics.hyracks.examples.btree.helper.IndexArtifactMapProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.IndexRegistryProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.StorageManagerInterface;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.TreeIndexBulkLoadOperatorDescriptor;
@@ -144,6 +146,7 @@
         // create providers for B-Tree
         IIndexRegistryProvider<IIndex> indexRegistryProvider = IndexRegistryProvider.INSTANCE;
         IStorageManagerInterface storageManager = StorageManagerInterface.INSTANCE;
+        IIndexArtifactMapProvider indexArtifactMapProvider = IndexArtifactMapProvider.INSTANCE;
 
         // the B-Tree expects its keyfields to be at the front of its input
         // tuple
@@ -154,7 +157,8 @@
         IIndexDataflowHelperFactory dataflowHelperFactory = new BTreeDataflowHelperFactory();
         TreeIndexBulkLoadOperatorDescriptor btreeBulkLoad = new TreeIndexBulkLoadOperatorDescriptor(spec,
                 storageManager, indexRegistryProvider, btreeSplitProvider, typeTraits, comparatorFactories,
-                fieldPermutation, 0.7f, dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                fieldPermutation, 0.7f, dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE,
+                indexArtifactMapProvider);
         JobHelper.createPartitionConstraint(spec, btreeBulkLoad, splitNCs);
 
         // distribute the records from the datagen via hashing to the bulk load
diff --git a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/PrimaryIndexSearchExample.java b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/PrimaryIndexSearchExample.java
index 9ce5d92..f11b33f 100644
--- a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/PrimaryIndexSearchExample.java
+++ b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/PrimaryIndexSearchExample.java
@@ -38,11 +38,13 @@
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.dataflow.std.misc.ConstantTupleSourceOperatorDescriptor;
 import edu.uci.ics.hyracks.dataflow.std.misc.PrinterOperatorDescriptor;
+import edu.uci.ics.hyracks.examples.btree.helper.IndexArtifactMapProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.IndexRegistryProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.StorageManagerInterface;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeSearchOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.impls.NoOpOperationCallbackProvider;
@@ -106,6 +108,7 @@
         // create roviders for B-Tree
         IIndexRegistryProvider<IIndex> indexRegistryProvider = IndexRegistryProvider.INSTANCE;
         IStorageManagerInterface storageManager = StorageManagerInterface.INSTANCE;
+        IIndexArtifactMapProvider indexArtifactMapProvider = IndexArtifactMapProvider.INSTANCE;
 
         // schema of tuples coming out of primary index
         RecordDescriptor recDesc = new RecordDescriptor(new ISerializerDeserializer[] {
@@ -144,7 +147,7 @@
         IIndexDataflowHelperFactory dataflowHelperFactory = new BTreeDataflowHelperFactory();
         BTreeSearchOperatorDescriptor btreeSearchOp = new BTreeSearchOperatorDescriptor(spec, recDesc, storageManager,
                 indexRegistryProvider, btreeSplitProvider, typeTraits, comparatorFactories, lowKeyFields,
-                highKeyFields, true, true, dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                highKeyFields, true, true, dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         JobHelper.createPartitionConstraint(spec, btreeSearchOp, splitNCs);
 
         // have each node print the results of its respective B-Tree
diff --git a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/SecondaryIndexBulkLoadExample.java b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/SecondaryIndexBulkLoadExample.java
index 465af1a..94aea0b 100644
--- a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/SecondaryIndexBulkLoadExample.java
+++ b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/SecondaryIndexBulkLoadExample.java
@@ -33,10 +33,12 @@
 import edu.uci.ics.hyracks.dataflow.std.connectors.OneToOneConnectorDescriptor;
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.dataflow.std.sort.ExternalSortOperatorDescriptor;
+import edu.uci.ics.hyracks.examples.btree.helper.IndexArtifactMapProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.IndexRegistryProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.StorageManagerInterface;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.TreeIndexBulkLoadOperatorDescriptor;
@@ -96,6 +98,7 @@
 
         IIndexRegistryProvider<IIndex> indexRegistryProvider = IndexRegistryProvider.INSTANCE;
         IStorageManagerInterface storageManager = StorageManagerInterface.INSTANCE;
+        IIndexArtifactMapProvider indexArtifactMapProvider = IndexArtifactMapProvider.INSTANCE;
 
         // schema of tuples that we are retrieving from the primary index
         RecordDescriptor recDesc = new RecordDescriptor(new ISerializerDeserializer[] {
@@ -124,7 +127,7 @@
         IIndexDataflowHelperFactory dataflowHelperFactory = new BTreeDataflowHelperFactory();
         TreeIndexDiskOrderScanOperatorDescriptor btreeScanOp = new TreeIndexDiskOrderScanOperatorDescriptor(spec,
                 recDesc, storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         JobHelper.createPartitionConstraint(spec, btreeScanOp, splitNCs);
 
         // sort the tuples as preparation for bulk load into secondary index
@@ -146,7 +149,8 @@
         IFileSplitProvider btreeSplitProvider = JobHelper.createFileSplitProvider(splitNCs, options.secondaryBTreeName);
         TreeIndexBulkLoadOperatorDescriptor btreeBulkLoad = new TreeIndexBulkLoadOperatorDescriptor(spec,
                 storageManager, indexRegistryProvider, btreeSplitProvider, secondaryTypeTraits, comparatorFactories,
-                fieldPermutation, 0.7f, dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                fieldPermutation, 0.7f, dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE,
+                indexArtifactMapProvider);
         JobHelper.createPartitionConstraint(spec, btreeBulkLoad, splitNCs);
 
         // connect the ops
diff --git a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/SecondaryIndexSearchExample.java b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/SecondaryIndexSearchExample.java
index fd9e25d..b2cc09e 100644
--- a/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/SecondaryIndexSearchExample.java
+++ b/hyracks-examples/btree-example/btreeclient/src/main/java/edu/uci/ics/hyracks/examples/btree/client/SecondaryIndexSearchExample.java
@@ -38,11 +38,13 @@
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.dataflow.std.misc.ConstantTupleSourceOperatorDescriptor;
 import edu.uci.ics.hyracks.dataflow.std.misc.PrinterOperatorDescriptor;
+import edu.uci.ics.hyracks.examples.btree.helper.IndexArtifactMapProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.IndexRegistryProvider;
 import edu.uci.ics.hyracks.examples.btree.helper.StorageManagerInterface;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeSearchOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.impls.NoOpOperationCallbackProvider;
@@ -97,6 +99,7 @@
 
         IIndexRegistryProvider<IIndex> indexRegistryProvider = IndexRegistryProvider.INSTANCE;
         IStorageManagerInterface storageManager = StorageManagerInterface.INSTANCE;
+        IIndexArtifactMapProvider indexArtifactMapProvider = IndexArtifactMapProvider.INSTANCE;
 
         // schema of tuples coming out of secondary index
         RecordDescriptor secondaryRecDesc = new RecordDescriptor(new ISerializerDeserializer[] {
@@ -171,7 +174,7 @@
         BTreeSearchOperatorDescriptor secondarySearchOp = new BTreeSearchOperatorDescriptor(spec, secondaryRecDesc,
                 storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 searchComparatorFactories, secondaryLowKeyFields, secondaryHighKeyFields, true, true,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         JobHelper.createPartitionConstraint(spec, secondarySearchOp, splitNCs);
 
         // secondary index will output tuples with [UTF8String, Integer]
@@ -187,7 +190,7 @@
         BTreeSearchOperatorDescriptor primarySearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, primaryLowKeyFields, primaryHighKeyFields, true, true,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         JobHelper.createPartitionConstraint(spec, primarySearchOp, splitNCs);
 
         // have each node print the results of its respective B-Tree
diff --git a/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/IndexArtifactMapProvider.java b/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/IndexArtifactMapProvider.java
new file mode 100644
index 0000000..3a1c71f
--- /dev/null
+++ b/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/IndexArtifactMapProvider.java
@@ -0,0 +1,16 @@
+package edu.uci.ics.hyracks.examples.btree.helper;
+
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMap;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
+
+public class IndexArtifactMapProvider implements IIndexArtifactMapProvider {
+    private static final long serialVersionUID = 1L;
+
+    public static final IndexArtifactMapProvider INSTANCE = new IndexArtifactMapProvider();
+
+    @Override
+    public IIndexArtifactMap getIndexArtifactMap(IHyracksTaskContext ctx) {
+        return RuntimeContext.get(ctx).getIndexArtifactMap();
+    }
+}
diff --git a/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/RuntimeContext.java b/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/RuntimeContext.java
index 3336d6d..c07a50e 100644
--- a/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/RuntimeContext.java
+++ b/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/RuntimeContext.java
@@ -18,6 +18,7 @@
 import edu.uci.ics.hyracks.api.application.INCApplicationContext;
 import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMap;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IndexRegistry;
 import edu.uci.ics.hyracks.storage.common.buffercache.BufferCache;
 import edu.uci.ics.hyracks.storage.common.buffercache.ClockPageReplacementStrategy;
@@ -33,6 +34,7 @@
     private IndexRegistry<IIndex> indexRegistry;
     private IBufferCache bufferCache;
     private IFileMapManager fileMapManager;
+    private IIndexArtifactMap indexArtifactMap;
 
     public RuntimeContext(INCApplicationContext appCtx) {
         fileMapManager = new TransientFileMapManager();
@@ -40,6 +42,7 @@
         IPageReplacementStrategy prs = new ClockPageReplacementStrategy();
         bufferCache = new BufferCache(appCtx.getRootContext().getIOManager(), allocator, prs, fileMapManager, 32768, 50, 100);
         indexRegistry = new IndexRegistry<IIndex>();
+        indexArtifactMap = new TransientIndexArtifactMap();
     }
 
     public void close() {
@@ -61,4 +64,9 @@
     public static RuntimeContext get(IHyracksTaskContext ctx) {
         return (RuntimeContext) ctx.getJobletContext().getApplicationContext().getApplicationObject();
     }
+    
+    public IIndexArtifactMap getIndexArtifactMap() {
+        return indexArtifactMap;
+    }
+    
 }
\ No newline at end of file
diff --git a/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/TransientIndexArtifactMap.java b/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/TransientIndexArtifactMap.java
new file mode 100644
index 0000000..182e532
--- /dev/null
+++ b/hyracks-examples/btree-example/btreehelper/src/main/java/edu/uci/ics/hyracks/examples/btree/helper/TransientIndexArtifactMap.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2009-2012 by The Regents of the University of California
+ * Licensed 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 from
+ * 
+ *     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 edu.uci.ics.hyracks.examples.btree.helper;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import edu.uci.ics.hyracks.api.io.IODeviceHandle;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMap;
+
+public class TransientIndexArtifactMap implements IIndexArtifactMap {
+
+    private long counter = 0;
+    private Map<String, Long> name2IdMap = new HashMap<String, Long>();
+
+    @Override
+    public long create(String baseDir, List<IODeviceHandle> IODeviceHandles) throws IOException {
+        synchronized (name2IdMap) {
+            for (IODeviceHandle dev : IODeviceHandles) {
+                String fullDir = dev.getPath().toString() + "" + baseDir;
+                if (name2IdMap.containsKey(fullDir)) {
+                    throw new IOException();
+                }
+                name2IdMap.put(fullDir, counter++);
+            }
+        }
+        return 0;
+    }
+
+    @Override
+    public long get(String fullDir) {
+        synchronized (name2IdMap) {
+            return name2IdMap.get(fullDir);
+        }
+    }
+}
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/AbstractBTreeOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/AbstractBTreeOperatorTest.java
index b4159e2..8e6c2d9 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/AbstractBTreeOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/AbstractBTreeOperatorTest.java
@@ -46,6 +46,7 @@
 import edu.uci.ics.hyracks.dataflow.std.sort.ExternalSortOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeSearchOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.TreeIndexBulkLoadOperatorDescriptor;
@@ -54,6 +55,7 @@
 import edu.uci.ics.hyracks.storage.am.common.impls.NoOpOperationCallbackProvider;
 import edu.uci.ics.hyracks.storage.am.common.ophelpers.IndexOp;
 import edu.uci.ics.hyracks.storage.common.IStorageManagerInterface;
+import edu.uci.ics.hyracks.test.support.TestIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.test.support.TestIndexRegistryProvider;
 import edu.uci.ics.hyracks.test.support.TestStorageManagerComponentHolder;
 import edu.uci.ics.hyracks.test.support.TestStorageManagerInterface;
@@ -68,6 +70,7 @@
     protected final IStorageManagerInterface storageManager = new TestStorageManagerInterface();
     protected final IIndexRegistryProvider<IIndex> indexRegistryProvider = new TestIndexRegistryProvider();
     protected IIndexDataflowHelperFactory dataflowHelperFactory;
+    protected final IIndexArtifactMapProvider indexArtifactMapProvider = TestIndexArtifactMapProvider.INSTANCE;
 
     // field, type and key declarations for primary index
     protected final int primaryFieldCount = 6;
@@ -135,7 +138,7 @@
         JobSpecification spec = new JobSpecification();
         TreeIndexCreateOperatorDescriptor primaryCreateOp = new TreeIndexCreateOperatorDescriptor(spec, storageManager,
                 indexRegistryProvider, primarySplitProvider, primaryTypeTraits, primaryComparatorFactories,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryCreateOp, NC1_ID);
         spec.addRoot(primaryCreateOp);
         runTest(spec);
@@ -171,7 +174,7 @@
         TreeIndexBulkLoadOperatorDescriptor primaryBtreeBulkLoad = new TreeIndexBulkLoadOperatorDescriptor(spec,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, fieldPermutation, 0.7f, dataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeBulkLoad, NC1_ID);
 
         spec.connect(new OneToOneConnectorDescriptor(spec), ordScanner, 0, sorter, 0);
@@ -186,7 +189,7 @@
         JobSpecification spec = new JobSpecification();
         TreeIndexCreateOperatorDescriptor secondaryCreateOp = new TreeIndexCreateOperatorDescriptor(spec, storageManager,
                 indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits, secondaryComparatorFactories,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryCreateOp, NC1_ID);
         spec.addRoot(secondaryCreateOp);
         runTest(spec);
@@ -218,7 +221,7 @@
         BTreeSearchOperatorDescriptor primaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, lowKeyFields, highKeyFields, true, true, dataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeSearchOp, NC1_ID);
 
         // sort based on secondary keys
@@ -232,7 +235,7 @@
         TreeIndexBulkLoadOperatorDescriptor secondaryBtreeBulkLoad = new TreeIndexBulkLoadOperatorDescriptor(spec,
                 storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, fieldPermutation, 0.7f, dataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryBtreeBulkLoad, NC1_ID);
 
         spec.connect(new OneToOneConnectorDescriptor(spec), keyProviderOp, 0, primaryBtreeSearchOp, 0);
@@ -270,7 +273,7 @@
         TreeIndexInsertUpdateDeleteOperatorDescriptor primaryBtreeInsertOp = new TreeIndexInsertUpdateDeleteOperatorDescriptor(
                 spec, ordersDesc, storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, primaryFieldPermutation, pipelineOperation, dataflowHelperFactory,
-                null, NoOpOperationCallbackProvider.INSTANCE);
+                null, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeInsertOp, NC1_ID);
 
         // first secondary index
@@ -278,7 +281,7 @@
         TreeIndexInsertUpdateDeleteOperatorDescriptor secondaryInsertOp = new TreeIndexInsertUpdateDeleteOperatorDescriptor(
                 spec, ordersDesc, storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, fieldPermutationB, pipelineOperation, dataflowHelperFactory,
-                null, NoOpOperationCallbackProvider.INSTANCE);
+                null, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryInsertOp, NC1_ID);
 
         NullSinkOperatorDescriptor nullSink = new NullSinkOperatorDescriptor(spec);
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexScanOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexScanOperatorTest.java
index 36b1364..4c7e0fc 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexScanOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexScanOperatorTest.java
@@ -72,7 +72,7 @@
         BTreeSearchOperatorDescriptor primaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, lowKeyFields, highKeyFields, true, true, dataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeSearchOp, NC1_ID);
 
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexSearchOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexSearchOperatorTest.java
index 661e057..845e44b 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexSearchOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexSearchOperatorTest.java
@@ -77,7 +77,7 @@
         BTreeSearchOperatorDescriptor primaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, lowKeyFields, highKeyFields, true, true, dataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeSearchOp, NC1_ID);
 
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexStatsOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexStatsOperatorTest.java
index f7bbdd3..345372d 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexStatsOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreePrimaryIndexStatsOperatorTest.java
@@ -45,7 +45,7 @@
 
         TreeIndexStatsOperatorDescriptor primaryStatsOp = new TreeIndexStatsOperatorDescriptor(spec, storageManager,
                 indexRegistryProvider, primarySplitProvider, primaryTypeTraits, primaryComparatorFactories,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryStatsOp, NC1_ID);
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
                 createTempFile().getAbsolutePath()) });
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexInsertOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexInsertOperatorTest.java
index 4d0eefa..74dfc44 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexInsertOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexInsertOperatorTest.java
@@ -81,7 +81,7 @@
         BTreeSearchOperatorDescriptor secondaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec,
                 secondaryRecDesc, storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, secondaryLowKeyFields, secondaryHighKeyFields, true, true,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryBtreeSearchOp, NC1_ID);
 
         // second field from the tuples coming from secondary index
@@ -93,7 +93,7 @@
         BTreeSearchOperatorDescriptor primaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, primaryLowKeyFields, primaryHighKeyFields, true, true,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeSearchOp, NC1_ID);
 
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexSearchOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexSearchOperatorTest.java
index 43fb138..0b4d3ca 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexSearchOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexSearchOperatorTest.java
@@ -42,9 +42,9 @@
     @Before
     public void setup() throws Exception {
         super.setup();
-	createPrimaryIndex();
+        createPrimaryIndex();
         loadPrimaryIndex();
-	createSecondaryIndex();
+        createSecondaryIndex();
         loadSecondaryIndex();
     }
 
@@ -80,7 +80,7 @@
         BTreeSearchOperatorDescriptor secondaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec,
                 secondaryRecDesc, storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, secondaryLowKeyFields, secondaryHighKeyFields, true, true,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryBtreeSearchOp, NC1_ID);
 
         int[] primaryLowKeyFields = { 1 }; // second field from the tuples
@@ -92,7 +92,7 @@
         BTreeSearchOperatorDescriptor primaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, primaryLowKeyFields, primaryHighKeyFields, true, true,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeSearchOp, NC1_ID);
 
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexUpsertOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexUpsertOperatorTest.java
index d0dffae..693963e 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexUpsertOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/btree/BTreeSecondaryIndexUpsertOperatorTest.java
@@ -66,7 +66,7 @@
         BTreeSearchOperatorDescriptor secondaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec,
                 secondaryRecDesc, storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, secondaryLowKeyFields, secondaryHighKeyFields, true, true,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryBtreeSearchOp, NC1_ID);
 
         // second field from the tuples coming from secondary index
@@ -78,7 +78,7 @@
         BTreeSearchOperatorDescriptor primaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, primaryLowKeyFields, primaryHighKeyFields, true, true,
-                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                dataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeSearchOp, NC1_ID);
 
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/invertedindex/WordInvertedIndexTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/invertedindex/WordInvertedIndexTest.java
index 85cfe85..20b7d2f 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/invertedindex/WordInvertedIndexTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/invertedindex/WordInvertedIndexTest.java
@@ -53,6 +53,7 @@
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeSearchOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.TreeIndexBulkLoadOperatorDescriptor;
@@ -69,6 +70,7 @@
 import edu.uci.ics.hyracks.storage.am.invertedindex.tokenizers.ITokenFactory;
 import edu.uci.ics.hyracks.storage.am.invertedindex.tokenizers.UTF8WordTokenFactory;
 import edu.uci.ics.hyracks.storage.common.IStorageManagerInterface;
+import edu.uci.ics.hyracks.test.support.TestIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.test.support.TestIndexRegistryProvider;
 import edu.uci.ics.hyracks.test.support.TestStorageManagerComponentHolder;
 import edu.uci.ics.hyracks.test.support.TestStorageManagerInterface;
@@ -82,6 +84,7 @@
     private IStorageManagerInterface storageManager = new TestStorageManagerInterface();
     private IIndexRegistryProvider<IIndex> indexRegistryProvider = new TestIndexRegistryProvider();
     private IIndexDataflowHelperFactory btreeDataflowHelperFactory = new BTreeDataflowHelperFactory();
+    private IIndexArtifactMapProvider indexArtifactMapProvider = TestIndexArtifactMapProvider.INSTANCE;
 
     private final static SimpleDateFormat simpleDateFormat = new SimpleDateFormat("ddMMyy-hhmmssSS");
     private final static String sep = System.getProperty("file.separator");
@@ -138,10 +141,10 @@
         invListsTypeTraits[0] = IntegerPointable.TYPE_TRAITS;
         invListsComparatorFactories[0] = PointableBinaryComparatorFactory.of(IntegerPointable.FACTORY);
 
-	createPrimaryIndex();
+        createPrimaryIndex();
         loadPrimaryIndex();
         printPrimaryIndex();
-	createInvertedIndex();
+        createInvertedIndex();
         loadInvertedIndex();
     }
 
@@ -149,7 +152,7 @@
         JobSpecification spec = new JobSpecification();
         TreeIndexCreateOperatorDescriptor primaryCreateOp = new TreeIndexCreateOperatorDescriptor(spec, storageManager,
                 indexRegistryProvider, primaryFileSplitProvider, primaryTypeTraits, primaryComparatorFactories,
-                btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryCreateOp, NC1_ID);
         spec.addRoot(primaryCreateOp);
         runTest(spec);
@@ -158,10 +161,10 @@
     public void createInvertedIndex() throws Exception {
         JobSpecification spec = new JobSpecification();
         InvertedIndexCreateOperatorDescriptor invIndexCreateOp = new InvertedIndexCreateOperatorDescriptor(spec,
-                storageManager, btreeFileSplitProvider, invListsFileSplitProvider,
-                indexRegistryProvider, tokenTypeTraits, tokenComparatorFactories, invListsTypeTraits,
-                invListsComparatorFactories, tokenizerFactory, btreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                storageManager, btreeFileSplitProvider, invListsFileSplitProvider, indexRegistryProvider,
+                tokenTypeTraits, tokenComparatorFactories, invListsTypeTraits, invListsComparatorFactories,
+                tokenizerFactory, btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE,
+                indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, invIndexCreateOp, NC1_ID);
         spec.addRoot(invIndexCreateOp);
         runTest(spec);
@@ -193,7 +196,7 @@
         TreeIndexBulkLoadOperatorDescriptor primaryBtreeBulkLoad = new TreeIndexBulkLoadOperatorDescriptor(spec,
                 storageManager, indexRegistryProvider, primaryFileSplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, fieldPermutation, 0.7f, btreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeBulkLoad, NC1_ID);
         return primaryBtreeBulkLoad;
     }
@@ -220,7 +223,7 @@
         BTreeSearchOperatorDescriptor primaryBtreeSearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primaryFileSplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, lowKeyFields, highKeyFields, true, true, btreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBtreeSearchOp, NC1_ID);
         return primaryBtreeSearchOp;
     }
@@ -270,7 +273,7 @@
                 fieldPermutation, storageManager, btreeFileSplitProvider, invListsFileSplitProvider,
                 indexRegistryProvider, tokenTypeTraits, tokenComparatorFactories, invListsTypeTraits,
                 invListsComparatorFactories, tokenizerFactory, btreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, invIndexBulkLoadOp, NC1_ID);
         return invIndexBulkLoadOp;
     }
@@ -316,7 +319,7 @@
                 storageManager, btreeFileSplitProvider, invListsFileSplitProvider, indexRegistryProvider,
                 tokenTypeTraits, tokenComparatorFactories, invListsTypeTraits, invListsComparatorFactories,
                 btreeDataflowHelperFactory, tokenizerFactory, searchModifierFactory, invListsRecDesc,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, invIndexSearchOp, NC1_ID);
         return invIndexSearchOp;
     }
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/AbstractRTreeOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/AbstractRTreeOperatorTest.java
index 77eb9cd..6aa4da8 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/AbstractRTreeOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/AbstractRTreeOperatorTest.java
@@ -51,6 +51,7 @@
 import edu.uci.ics.hyracks.storage.am.btree.dataflow.BTreeSearchOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.common.api.IPrimitiveValueProviderFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.TreeIndexBulkLoadOperatorDescriptor;
@@ -60,6 +61,7 @@
 import edu.uci.ics.hyracks.storage.am.common.ophelpers.IndexOp;
 import edu.uci.ics.hyracks.storage.am.rtree.util.RTreeUtils;
 import edu.uci.ics.hyracks.storage.common.IStorageManagerInterface;
+import edu.uci.ics.hyracks.test.support.TestIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.test.support.TestIndexRegistryProvider;
 import edu.uci.ics.hyracks.test.support.TestStorageManagerComponentHolder;
 import edu.uci.ics.hyracks.test.support.TestStorageManagerInterface;
@@ -75,6 +77,7 @@
     protected final IIndexRegistryProvider<IIndex> indexRegistryProvider = new TestIndexRegistryProvider();
     protected IIndexDataflowHelperFactory rtreeDataflowHelperFactory;
     protected IIndexDataflowHelperFactory btreeDataflowHelperFactory = new BTreeDataflowHelperFactory();
+    protected IIndexArtifactMapProvider indexArtifactMapProvider = TestIndexArtifactMapProvider.INSTANCE;
 
     // field, type and key declarations for primary index
     protected final int primaryFieldCount = 10;
@@ -176,7 +179,7 @@
         JobSpecification spec = new JobSpecification();
         TreeIndexCreateOperatorDescriptor primaryCreateOp = new TreeIndexCreateOperatorDescriptor(spec, storageManager,
                 indexRegistryProvider, primarySplitProvider, primaryTypeTraits, primaryComparatorFactories,
-                btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryCreateOp, NC1_ID);
         spec.addRoot(primaryCreateOp);
         runTest(spec);
@@ -216,7 +219,7 @@
         TreeIndexBulkLoadOperatorDescriptor primaryBulkLoad = new TreeIndexBulkLoadOperatorDescriptor(spec,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, fieldPermutation, 0.7f, btreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryBulkLoad, NC1_ID);
 
         spec.connect(new OneToOneConnectorDescriptor(spec), ordScanner, 0, sorter, 0);
@@ -231,7 +234,8 @@
         JobSpecification spec = new JobSpecification();
         TreeIndexCreateOperatorDescriptor secondaryCreateOp = new TreeIndexCreateOperatorDescriptor(spec,
                 storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
-                secondaryComparatorFactories, rtreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                secondaryComparatorFactories, rtreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE,
+                indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryCreateOp, NC1_ID);
         spec.addRoot(secondaryCreateOp);
         runTest(spec);
@@ -263,7 +267,7 @@
         BTreeSearchOperatorDescriptor primarySearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, lowKeyFields, highKeyFields, true, true, btreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primarySearchOp, NC1_ID);
 
         // load secondary index
@@ -271,7 +275,7 @@
         TreeIndexBulkLoadOperatorDescriptor secondaryBulkLoad = new TreeIndexBulkLoadOperatorDescriptor(spec,
                 storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, fieldPermutation, 0.7f, rtreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryBulkLoad, NC1_ID);
 
         spec.connect(new OneToOneConnectorDescriptor(spec), keyProviderOp, 0, primarySearchOp, 0);
@@ -311,8 +315,8 @@
         int[] primaryFieldPermutation = { 0, 1, 2, 4, 5, 7, 9, 10, 11, 12 };
         TreeIndexInsertUpdateDeleteOperatorDescriptor primaryInsertOp = new TreeIndexInsertUpdateDeleteOperatorDescriptor(
                 spec, ordersDesc, storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
-                primaryComparatorFactories, primaryFieldPermutation, IndexOp.INSERT, btreeDataflowHelperFactory,
-                null, NoOpOperationCallbackProvider.INSTANCE);
+                primaryComparatorFactories, primaryFieldPermutation, IndexOp.INSERT, btreeDataflowHelperFactory, null,
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primaryInsertOp, NC1_ID);
 
         // secondary index
@@ -320,7 +324,7 @@
         TreeIndexInsertUpdateDeleteOperatorDescriptor secondaryInsertOp = new TreeIndexInsertUpdateDeleteOperatorDescriptor(
                 spec, ordersDesc, storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, secondaryFieldPermutation, IndexOp.INSERT, rtreeDataflowHelperFactory,
-                null, NoOpOperationCallbackProvider.INSTANCE);
+                null, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryInsertOp, NC1_ID);
 
         NullSinkOperatorDescriptor nullSink = new NullSinkOperatorDescriptor(spec);
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexInsertOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexInsertOperatorTest.java
index 2cff32e..84d9686 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexInsertOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexInsertOperatorTest.java
@@ -84,7 +84,7 @@
         RTreeSearchOperatorDescriptor secondarySearchOp = new RTreeSearchOperatorDescriptor(spec, secondaryRecDesc,
                 storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, keyFields, rtreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondarySearchOp, NC1_ID);
 
         // fifth field from the tuples coming from secondary index
@@ -96,7 +96,7 @@
         BTreeSearchOperatorDescriptor primarySearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, primaryLowKeyFields, primaryHighKeyFields, true, true,
-                btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primarySearchOp, NC1_ID);
 
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexScanOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexScanOperatorTest.java
index e35a72b..c625d9f 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexScanOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexScanOperatorTest.java
@@ -82,7 +82,7 @@
         RTreeSearchOperatorDescriptor secondarySearchOp = new RTreeSearchOperatorDescriptor(spec, secondaryRecDesc,
                 storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, keyFields, rtreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondarySearchOp, NC1_ID);
 
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexSearchOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexSearchOperatorTest.java
index 3bdbb87..21a0993 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexSearchOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexSearchOperatorTest.java
@@ -83,7 +83,7 @@
         RTreeSearchOperatorDescriptor secondarySearchOp = new RTreeSearchOperatorDescriptor(spec, secondaryRecDesc,
                 storageManager, indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits,
                 secondaryComparatorFactories, keyFields, rtreeDataflowHelperFactory,
-                NoOpOperationCallbackProvider.INSTANCE);
+                NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondarySearchOp, NC1_ID);
 
         // fifth field from the tuples coming from secondary index
@@ -95,7 +95,7 @@
         BTreeSearchOperatorDescriptor primarySearchOp = new BTreeSearchOperatorDescriptor(spec, primaryRecDesc,
                 storageManager, indexRegistryProvider, primarySplitProvider, primaryTypeTraits,
                 primaryComparatorFactories, primaryLowKeyFields, primaryHighKeyFields, true, true,
-                btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                btreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, primarySearchOp, NC1_ID);
 
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
diff --git a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexStatsOperatorTest.java b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexStatsOperatorTest.java
index 0f5e45f..402bf80 100644
--- a/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexStatsOperatorTest.java
+++ b/hyracks-examples/hyracks-integration-tests/src/test/java/edu/uci/ics/hyracks/tests/am/rtree/RTreeSecondaryIndexStatsOperatorTest.java
@@ -49,7 +49,7 @@
 
         TreeIndexStatsOperatorDescriptor secondaryStatsOp = new TreeIndexStatsOperatorDescriptor(spec, storageManager,
                 indexRegistryProvider, secondarySplitProvider, secondaryTypeTraits, secondaryComparatorFactories,
-                rtreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE);
+                rtreeDataflowHelperFactory, NoOpOperationCallbackProvider.INSTANCE, indexArtifactMapProvider);
         PartitionConstraintHelper.addAbsoluteLocationConstraint(spec, secondaryStatsOp, NC1_ID);
         IFileSplitProvider outSplits = new ConstantFileSplitProvider(new FileSplit[] { new FileSplit(NC1_ID,
                 createTempFile().getAbsolutePath()) });
diff --git a/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/dataflow/BTreeSearchOperatorDescriptor.java b/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/dataflow/BTreeSearchOperatorDescriptor.java
index 2d747f9..b0b16dc 100644
--- a/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/dataflow/BTreeSearchOperatorDescriptor.java
+++ b/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/dataflow/BTreeSearchOperatorDescriptor.java
@@ -26,6 +26,7 @@
 import edu.uci.ics.hyracks.storage.am.common.api.IOperationCallbackProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.AbstractTreeIndexOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.common.IStorageManagerInterface;
@@ -46,9 +47,9 @@
             IFileSplitProvider fileSplitProvider, ITypeTraits[] typeTraits,
             IBinaryComparatorFactory[] comparatorFactories, int[] lowKeyFields, int[] highKeyFields,
             boolean lowKeyInclusive, boolean highKeyInclusive, IIndexDataflowHelperFactory dataflowHelperFactory,
-            IOperationCallbackProvider opCallbackProvider) {
+            IOperationCallbackProvider opCallbackProvider, IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 1, 1, recDesc, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits,
-                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider);
+                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider, indexArtifactMapProvider);
         this.lowKeyFields = lowKeyFields;
         this.highKeyFields = highKeyFields;
         this.lowKeyInclusive = lowKeyInclusive;
diff --git a/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/dataflow/BTreeUpdateSearchOperatorDescriptor.java b/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/dataflow/BTreeUpdateSearchOperatorDescriptor.java
index 1675986..30798e2 100644
--- a/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/dataflow/BTreeUpdateSearchOperatorDescriptor.java
+++ b/hyracks-storage-am-btree/src/main/java/edu/uci/ics/hyracks/storage/am/btree/dataflow/BTreeUpdateSearchOperatorDescriptor.java
@@ -26,6 +26,7 @@
 import edu.uci.ics.hyracks.storage.am.common.api.IOperationCallbackProvider;
 import edu.uci.ics.hyracks.storage.am.common.api.ITupleUpdaterFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.common.IStorageManagerInterface;
@@ -41,10 +42,11 @@
             IFileSplitProvider fileSplitProvider, ITypeTraits[] typeTraits,
             IBinaryComparatorFactory[] comparatorFactories, int[] lowKeyFields, int[] highKeyFields,
             boolean lowKeyInclusive, boolean highKeyInclusive, IIndexDataflowHelperFactory dataflowHelperFactory,
-            IOperationCallbackProvider opCallbackProvider, ITupleUpdaterFactory tupleUpdaterFactory) {
+            IOperationCallbackProvider opCallbackProvider, ITupleUpdaterFactory tupleUpdaterFactory,
+            IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, recDesc, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits, comparatorFactories,
                 lowKeyFields, highKeyFields, lowKeyInclusive, highKeyInclusive, dataflowHelperFactory,
-                opCallbackProvider);
+                opCallbackProvider, indexArtifactMapProvider);
         this.tupleUpdaterFactory = tupleUpdaterFactory;
     }
 
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/AbstractTreeIndexOperatorDescriptor.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/AbstractTreeIndexOperatorDescriptor.java
index a36b503..6a90b26 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/AbstractTreeIndexOperatorDescriptor.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/AbstractTreeIndexOperatorDescriptor.java
@@ -43,6 +43,7 @@
 	protected final ITupleFilterFactory tupleFilterFactory;
 	
     protected final IOperationCallbackProvider opCallbackProvider;
+    protected final IIndexArtifactMapProvider indexArtifactMapProvider;
 
 	public AbstractTreeIndexOperatorDescriptor(IOperatorDescriptorRegistry spec,
 			int inputArity, int outputArity, RecordDescriptor recDesc,
@@ -53,7 +54,8 @@
 			IBinaryComparatorFactory[] comparatorFactories,
 			IIndexDataflowHelperFactory dataflowHelperFactory,
 			ITupleFilterFactory tupleFilterFactory,
-			IOperationCallbackProvider opCallbackProvider) {
+			IOperationCallbackProvider opCallbackProvider, 
+			IIndexArtifactMapProvider indexArtifactMapProvider) {
 		super(spec, inputArity, outputArity);
 		this.fileSplitProvider = fileSplitProvider;
 		this.storageManager = storageManager;
@@ -63,6 +65,7 @@
 		this.dataflowHelperFactory = dataflowHelperFactory;
 		this.tupleFilterFactory = tupleFilterFactory;
         this.opCallbackProvider = opCallbackProvider;
+        this.indexArtifactMapProvider = indexArtifactMapProvider;
 		if (outputArity > 0) {
 			recordDescriptors[0] = recDesc;
 		}
@@ -112,4 +115,9 @@
 	public ITupleFilterFactory getTupleFilterFactory() {
 		return tupleFilterFactory;
 	}
+	
+	@Override
+    public IIndexArtifactMapProvider getIndexArtifactMapProvider() {
+        return indexArtifactMapProvider;
+    }
 }
\ No newline at end of file
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexArtifactMap.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexArtifactMap.java
new file mode 100644
index 0000000..995b376
--- /dev/null
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexArtifactMap.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009-2012 by The Regents of the University of California
+ * Licensed 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 from
+ * 
+ *     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 edu.uci.ics.hyracks.storage.am.common.dataflow;
+
+import java.io.IOException;
+import java.util.List;
+
+import edu.uci.ics.hyracks.api.io.IODeviceHandle;
+
+public interface IIndexArtifactMap {
+    public long create(String baseDir, List<IODeviceHandle> IODeviceHandles) throws IOException;
+
+    public long get(String fullDir);
+}
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexArtifactMapProvider.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexArtifactMapProvider.java
new file mode 100644
index 0000000..8f62b9e
--- /dev/null
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexArtifactMapProvider.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2009-2012 by The Regents of the University of California
+ * Licensed 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 from
+ * 
+ *     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 edu.uci.ics.hyracks.storage.am.common.dataflow;
+
+import java.io.Serializable;
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+
+public interface IIndexArtifactMapProvider extends Serializable {
+    public IIndexArtifactMap getIndexArtifactMap(IHyracksTaskContext ctx);
+}
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexOperatorDescriptor.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexOperatorDescriptor.java
index 6872e3f..9814d92 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexOperatorDescriptor.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IIndexOperatorDescriptor.java
@@ -33,4 +33,6 @@
     public IIndexDataflowHelperFactory getIndexDataflowHelperFactory();
     
     public IOperationCallbackProvider getOpCallbackProvider();
+    
+    public IIndexArtifactMapProvider getIndexArtifactMapProvider();
 }
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexDataflowHelper.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexDataflowHelper.java
index f98aea2..dcfc726 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexDataflowHelper.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexDataflowHelper.java
@@ -15,9 +15,13 @@
 
 package edu.uci.ics.hyracks.storage.am.common.dataflow;
 
+import java.util.List;
+
 import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.api.io.FileReference;
+import edu.uci.ics.hyracks.api.io.IIOManager;
+import edu.uci.ics.hyracks.api.io.IODeviceHandle;
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.storage.am.common.api.IOperationCallbackProvider;
 import edu.uci.ics.hyracks.storage.common.buffercache.IBufferCache;
@@ -61,6 +65,15 @@
     			throw e;
     		}
     	}
+    	/*
+    	//check whether the requested index instance already exists
+    	//To do so, checking the index directory of the first ioDevice is sufficient.
+    	IIOManager ioManager = ctx.getIOManager();
+    	List<IODeviceHandle> ioDevices = ioManager.getIODevices();
+    	
+    	getIndexArtifactMapProvider().getIndexArtifactMap(ctx).get()
+    	*/
+    	
     	// Only set indexFileId member after openFile() succeeds.
     	indexFileId = fileId;    	
     	// Create new index instance and register it.
@@ -116,4 +129,8 @@
     public IOperationCallbackProvider getOpCallbackProvider() {
         return opDesc.getOpCallbackProvider();
     }
+    
+    public IIndexArtifactMapProvider getIndexArtifactMapProvider() {
+        return opDesc.getIndexArtifactMapProvider();
+    }
 }
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexBulkLoadOperatorDescriptor.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexBulkLoadOperatorDescriptor.java
index 26a5275..2320c2a 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexBulkLoadOperatorDescriptor.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexBulkLoadOperatorDescriptor.java
@@ -36,9 +36,10 @@
             IIndexRegistryProvider<IIndex> indexRegistryProvider, IFileSplitProvider fileSplitProvider,
             ITypeTraits[] typeTraits, IBinaryComparatorFactory[] comparatorFactories, int[] fieldPermutation,
             float fillFactor, IIndexDataflowHelperFactory dataflowHelperFactory,
-            IOperationCallbackProvider opCallbackProvider) {
+            IOperationCallbackProvider opCallbackProvider,
+            IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 1, 0, null, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits,
-                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider);
+                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider, indexArtifactMapProvider);
         this.fieldPermutation = fieldPermutation;
         this.fillFactor = fillFactor;
     }
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexCreateOperatorDescriptor.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexCreateOperatorDescriptor.java
index f5cf09e..ea40c07 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexCreateOperatorDescriptor.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexCreateOperatorDescriptor.java
@@ -32,9 +32,10 @@
     public TreeIndexCreateOperatorDescriptor(IOperatorDescriptorRegistry spec, IStorageManagerInterface storageManager,
             IIndexRegistryProvider<IIndex> indexRegistryProvider, IFileSplitProvider fileSplitProvider,
             ITypeTraits[] typeTraits, IBinaryComparatorFactory[] comparatorFactories,
-            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider) {
+            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider,
+            IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 0, 0, null, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits,
-                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider);
+                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider, indexArtifactMapProvider);
     }
 
     @Override
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexDiskOrderScanOperatorDescriptor.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexDiskOrderScanOperatorDescriptor.java
index bf6e403..2935d64 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexDiskOrderScanOperatorDescriptor.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexDiskOrderScanOperatorDescriptor.java
@@ -32,9 +32,10 @@
     public TreeIndexDiskOrderScanOperatorDescriptor(IOperatorDescriptorRegistry spec, RecordDescriptor recDesc,
             IStorageManagerInterface storageManager, IIndexRegistryProvider<IIndex> indexRegistryProvider,
             IFileSplitProvider fileSplitProvider, ITypeTraits[] typeTraits,
-            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider) {
+            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider,
+            IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 0, 1, recDesc, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits, null,
-                dataflowHelperFactory, null, opCallbackProvider);
+                dataflowHelperFactory, null, opCallbackProvider, indexArtifactMapProvider);
     }
 
     @Override
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexInsertUpdateDeleteOperatorDescriptor.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexInsertUpdateDeleteOperatorDescriptor.java
index 0ea59af..c03d2f8 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexInsertUpdateDeleteOperatorDescriptor.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexInsertUpdateDeleteOperatorDescriptor.java
@@ -40,9 +40,11 @@
             IStorageManagerInterface storageManager, IIndexRegistryProvider<IIndex> indexRegistryProvider,
             IFileSplitProvider fileSplitProvider, ITypeTraits[] typeTraits,
             IBinaryComparatorFactory[] comparatorFactories, int[] fieldPermutation, IndexOp op,
-            IIndexDataflowHelperFactory dataflowHelperFactory, ITupleFilterFactory tupleFilterFactory, IOperationCallbackProvider opCallbackProvider) {
+            IIndexDataflowHelperFactory dataflowHelperFactory, ITupleFilterFactory tupleFilterFactory,
+            IOperationCallbackProvider opCallbackProvider, IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 1, 1, recDesc, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits,
-                comparatorFactories, dataflowHelperFactory, tupleFilterFactory, opCallbackProvider);
+                comparatorFactories, dataflowHelperFactory, tupleFilterFactory, opCallbackProvider,
+                indexArtifactMapProvider);
         this.fieldPermutation = fieldPermutation;
         this.op = op;
     }
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorDescriptor.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorDescriptor.java
index 9eae626..f6f088f 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorDescriptor.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorDescriptor.java
@@ -36,9 +36,10 @@
     public TreeIndexStatsOperatorDescriptor(IOperatorDescriptorRegistry spec, IStorageManagerInterface storageManager,
             IIndexRegistryProvider<IIndex> indexRegistryProvider, IFileSplitProvider fileSplitProvider,
             ITypeTraits[] typeTraits, IBinaryComparatorFactory[] comparatorFactories,
-            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider) {
+            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider,
+            IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 0, 1, recDesc, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits,
-                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider);
+                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider, indexArtifactMapProvider);
     }
 
     @Override
diff --git a/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/AbstractInvertedIndexOperatorDescriptor.java b/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/AbstractInvertedIndexOperatorDescriptor.java
index 3b21fec..04bce7e 100644
--- a/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/AbstractInvertedIndexOperatorDescriptor.java
+++ b/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/AbstractInvertedIndexOperatorDescriptor.java
@@ -28,6 +28,7 @@
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexTupleWriterFactory;
 import edu.uci.ics.hyracks.storage.am.common.api.ITupleFilterFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.common.tuples.TypeAwareTupleWriterFactory;
@@ -45,6 +46,7 @@
     protected final IStorageManagerInterface storageManager;
     protected final IIndexRegistryProvider<IIndex> indexRegistryProvider;
     protected final IOperationCallbackProvider opCallbackProvider;
+    protected final IIndexArtifactMapProvider indexArtifactMapProvider;
     
     // Btree.
     protected final ITreeIndexFrameFactory btreeInteriorFrameFactory;
@@ -66,13 +68,15 @@
             IIndexRegistryProvider<IIndex> indexRegistryProvider, ITypeTraits[] tokenTypeTraits,
             IBinaryComparatorFactory[] tokenComparatorFactories, ITypeTraits[] invListsTypeTraits,
             IBinaryComparatorFactory[] invListComparatorFactories, IBinaryTokenizerFactory tokenizerFactory,
-            IIndexDataflowHelperFactory btreeDataflowHelperFactory, IOperationCallbackProvider opCallbackProvider) {
+            IIndexDataflowHelperFactory btreeDataflowHelperFactory, IOperationCallbackProvider opCallbackProvider,
+            IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, inputArity, outputArity);
 
         // General.
         this.storageManager = storageManager;
         this.indexRegistryProvider = indexRegistryProvider;
         this.opCallbackProvider = opCallbackProvider;
+        this.indexArtifactMapProvider = indexArtifactMapProvider;
         
         // Btree.
         this.btreeTypeTraits = InvertedIndexUtils.getBTreeTypeTraits(tokenTypeTraits);
@@ -158,4 +162,9 @@
 	public ITupleFilterFactory getTupleFilterFactory() {
 		return null;
 	}
+    
+    @Override
+    public IIndexArtifactMapProvider getIndexArtifactMapProvider() {
+        return indexArtifactMapProvider;
+    }
 }
\ No newline at end of file
diff --git a/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexBulkLoadOperatorDescriptor.java b/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexBulkLoadOperatorDescriptor.java
index cc586ae..e001dff 100644
--- a/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexBulkLoadOperatorDescriptor.java
+++ b/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexBulkLoadOperatorDescriptor.java
@@ -24,6 +24,7 @@
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.storage.am.common.api.IOperationCallbackProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.invertedindex.tokenizers.IBinaryTokenizerFactory;
@@ -41,10 +42,11 @@
             ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenComparatorFactories,
             ITypeTraits[] invListsTypeTraits, IBinaryComparatorFactory[] invListComparatorFactories,
             IBinaryTokenizerFactory tokenizerFactory, IIndexDataflowHelperFactory btreeDataflowHelperFactory,
-            IOperationCallbackProvider opCallbackProvider) {
+            IOperationCallbackProvider opCallbackProvider, IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 1, 0, null, storageManager, btreeFileSplitProvider, invListsFileSplitProvider,
                 indexRegistryProvider, tokenTypeTraits, tokenComparatorFactories, invListsTypeTraits,
-                invListComparatorFactories, tokenizerFactory, btreeDataflowHelperFactory, opCallbackProvider);
+                invListComparatorFactories, tokenizerFactory, btreeDataflowHelperFactory, opCallbackProvider,
+                indexArtifactMapProvider);
         this.fieldPermutation = fieldPermutation;
     }
 
diff --git a/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexCreateOperatorDescriptor.java b/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexCreateOperatorDescriptor.java
index 540d794..e161d34 100644
--- a/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexCreateOperatorDescriptor.java
+++ b/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexCreateOperatorDescriptor.java
@@ -24,6 +24,7 @@
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.storage.am.common.api.IOperationCallbackProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.invertedindex.tokenizers.IBinaryTokenizerFactory;
@@ -39,10 +40,11 @@
             ITypeTraits[] tokenTypeTraits, IBinaryComparatorFactory[] tokenComparatorFactories,
             ITypeTraits[] invListsTypeTraits, IBinaryComparatorFactory[] invListComparatorFactories,
             IBinaryTokenizerFactory tokenizerFactory, IIndexDataflowHelperFactory btreeDataflowHelperFactory,
-            IOperationCallbackProvider opCallbackProvider) {
+            IOperationCallbackProvider opCallbackProvider, IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 0, 0, null, storageManager, btreeFileSplitProvider, invListsFileSplitProvider,
                 indexRegistryProvider, tokenTypeTraits, tokenComparatorFactories, invListsTypeTraits,
-                invListComparatorFactories, tokenizerFactory, btreeDataflowHelperFactory, opCallbackProvider);
+                invListComparatorFactories, tokenizerFactory, btreeDataflowHelperFactory, opCallbackProvider,
+                indexArtifactMapProvider);
     }
 
     @Override
diff --git a/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexSearchOperatorDescriptor.java b/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexSearchOperatorDescriptor.java
index f5f92fc..5977b2d 100644
--- a/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexSearchOperatorDescriptor.java
+++ b/hyracks-storage-am-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/invertedindex/dataflow/InvertedIndexSearchOperatorDescriptor.java
@@ -26,6 +26,7 @@
 import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
 import edu.uci.ics.hyracks.storage.am.common.api.IOperationCallbackProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.am.invertedindex.api.IInvertedIndexSearchModifier;
@@ -46,10 +47,11 @@
             ITypeTraits[] invListsTypeTraits, IBinaryComparatorFactory[] invListComparatorFactories,
             IIndexDataflowHelperFactory btreeDataflowHelperFactory, IBinaryTokenizerFactory queryTokenizerFactory,
             IInvertedIndexSearchModifierFactory searchModifierFactory, RecordDescriptor recDesc,
-            IOperationCallbackProvider opCallbackProvider) {
+            IOperationCallbackProvider opCallbackProvider, IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 1, 1, recDesc, storageManager, btreeFileSplitProvider, invListsFileSplitProvider,
                 indexRegistryProvider, tokenTypeTraits, tokenComparatorFactories, invListsTypeTraits,
-                invListComparatorFactories, queryTokenizerFactory, btreeDataflowHelperFactory, opCallbackProvider);
+                invListComparatorFactories, queryTokenizerFactory, btreeDataflowHelperFactory, opCallbackProvider,
+                indexArtifactMapProvider);
         this.queryField = queryField;
         this.searchModifierFactory = searchModifierFactory;
     }
diff --git a/hyracks-storage-am-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/dataflow/RTreeSearchOperatorDescriptor.java b/hyracks-storage-am-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/dataflow/RTreeSearchOperatorDescriptor.java
index 1af3187..b0cf6de 100644
--- a/hyracks-storage-am-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/dataflow/RTreeSearchOperatorDescriptor.java
+++ b/hyracks-storage-am-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/dataflow/RTreeSearchOperatorDescriptor.java
@@ -26,6 +26,7 @@
 import edu.uci.ics.hyracks.storage.am.common.api.IOperationCallbackProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.AbstractTreeIndexOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
 import edu.uci.ics.hyracks.storage.common.IStorageManagerInterface;
@@ -40,9 +41,10 @@
             IStorageManagerInterface storageManager, IIndexRegistryProvider<IIndex> indexRegistryProvider,
             IFileSplitProvider fileSplitProvider, ITypeTraits[] typeTraits,
             IBinaryComparatorFactory[] comparatorFactories, int[] keyFields,
-            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider) {
+            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider,
+            IIndexArtifactMapProvider indexArtifactMapProvider) {
         super(spec, 1, 1, recDesc, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits,
-                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider);
+                comparatorFactories, dataflowHelperFactory, null, opCallbackProvider, indexArtifactMapProvider);
         this.keyFields = keyFields;
     }
 
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestIndexArtifactMap.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestIndexArtifactMap.java
new file mode 100644
index 0000000..a1e0c5f
--- /dev/null
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestIndexArtifactMap.java
@@ -0,0 +1,36 @@
+package edu.uci.ics.hyracks.test.support;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import edu.uci.ics.hyracks.api.io.IODeviceHandle;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMap;
+
+public class TestIndexArtifactMap implements IIndexArtifactMap {
+
+    private long counter = 0;
+    private Map<String, Long> name2IdMap = new HashMap<String, Long>();
+
+    @Override
+    public long create(String baseDir, List<IODeviceHandle> IODeviceHandles) throws IOException {
+        synchronized (name2IdMap) {
+            for (IODeviceHandle dev : IODeviceHandles) {
+                String fullDir = dev.getPath().toString() + "" + baseDir;
+                if (name2IdMap.containsKey(fullDir)) {
+                    throw new IOException();
+                }
+                name2IdMap.put(fullDir, counter++);
+            }
+        }
+        return 0;
+    }
+
+    @Override
+    public long get(String fullDir) {
+        synchronized (name2IdMap) {
+            return name2IdMap.get(fullDir);
+        }
+    }
+}
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestIndexArtifactMapProvider.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestIndexArtifactMapProvider.java
new file mode 100644
index 0000000..cc0fde4
--- /dev/null
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestIndexArtifactMapProvider.java
@@ -0,0 +1,17 @@
+package edu.uci.ics.hyracks.test.support;
+
+import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMap;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMapProvider;
+
+public class TestIndexArtifactMapProvider implements IIndexArtifactMapProvider {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final TestIndexArtifactMapProvider INSTANCE = new TestIndexArtifactMapProvider();
+
+    @Override
+    public IIndexArtifactMap getIndexArtifactMap(IHyracksTaskContext ctx) {
+        return TestStorageManagerComponentHolder.getIndexArtifactMap(ctx);
+    }
+}
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestStorageManagerComponentHolder.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestStorageManagerComponentHolder.java
index ccbe862..66d3895 100644
--- a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestStorageManagerComponentHolder.java
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/test/support/TestStorageManagerComponentHolder.java
@@ -24,6 +24,7 @@
 import edu.uci.ics.hyracks.api.io.IODeviceHandle;
 import edu.uci.ics.hyracks.control.nc.io.IOManager;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexArtifactMap;
 import edu.uci.ics.hyracks.storage.am.common.dataflow.IndexRegistry;
 import edu.uci.ics.hyracks.storage.common.buffercache.BufferCache;
 import edu.uci.ics.hyracks.storage.common.buffercache.ClockPageReplacementStrategy;
@@ -40,6 +41,7 @@
     private static IFileMapProvider fileMapProvider;
     private static IndexRegistry<IIndex> indexRegistry;
     private static IOManager ioManager;
+    private static IIndexArtifactMap indexArtifactMap;
     
     private static int pageSize;
     private static int numPages;
@@ -52,6 +54,7 @@
         bufferCache = null;
         fileMapProvider = null;
         indexRegistry = null;
+        indexArtifactMap = null;
     }
 
     public synchronized static IBufferCache getBufferCache(IHyracksTaskContext ctx) {
@@ -87,4 +90,11 @@
     	}
     	return ioManager;
     }
+    
+    public synchronized static IIndexArtifactMap getIndexArtifactMap(IHyracksTaskContext ctx) {
+        if (indexArtifactMap == null) {
+            indexArtifactMap = new TestIndexArtifactMap();
+        }
+        return indexArtifactMap;
+    }
 }
\ No newline at end of file