diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/api/IIndexLifecycleManager.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/api/IIndexLifecycleManager.java
index 552028d..c4f43b9 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/api/IIndexLifecycleManager.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/api/IIndexLifecycleManager.java
@@ -1,5 +1,7 @@
 package edu.uci.ics.hyracks.storage.am.common.api;
 
+import java.util.List;
+
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 
 public interface IIndexLifecycleManager {
@@ -12,4 +14,6 @@
     public void open(long resourceID) throws HyracksDataException;
 
     public void close(long resourceID);
+
+    public List<IIndex> getOpenIndexes();
 }
\ No newline at end of file
diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexLifecycleManager.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexLifecycleManager.java
index 1848b8f..197aecc 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexLifecycleManager.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexLifecycleManager.java
@@ -1,7 +1,9 @@
 package edu.uci.ics.hyracks.storage.am.common.dataflow;
 
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
@@ -165,4 +167,15 @@
                     + lastAccess + "}";
         }
     }
+
+    @Override
+    public List<IIndex> getOpenIndexes() {
+        List<IIndex> openIndexes = new ArrayList<IIndex>();
+        for (IndexInfo i : indexInfos.values()) {
+            if (i.isOpen) {
+                openIndexes.add(i.index);
+            }
+        }
+        return openIndexes;
+    }
 }
\ No newline at end of file
diff --git a/hyracks-storage-am-lsm-common/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/common/api/ILSMIndex.java b/hyracks-storage-am-lsm-common/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/common/api/ILSMIndex.java
index 0a5ce40..085626c 100644
--- a/hyracks-storage-am-lsm-common/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/common/api/ILSMIndex.java
+++ b/hyracks-storage-am-lsm-common/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/common/api/ILSMIndex.java
@@ -15,6 +15,8 @@
 
 package edu.uci.ics.hyracks.storage.am.lsm.common.api;
 
+import java.util.List;
+
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.storage.am.common.api.IIndex;
 import edu.uci.ics.hyracks.storage.am.common.api.IModificationOperationCallback;
@@ -40,4 +42,6 @@
     public ILSMOperationTracker getOperationTracker();
 
     public ILSMIOOperationScheduler getIOScheduler();
+
+    public List<ILSMComponent> getImmutableComponents();
 }