diff --git a/hyracks-storage-am-lsm-common/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/common/impls/TreeIndexComponentFinalizer.java b/hyracks-storage-am-lsm-common/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/common/impls/TreeIndexComponentFinalizer.java
index 09cfff3..77efb16 100644
--- a/hyracks-storage-am-lsm-common/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/common/impls/TreeIndexComponentFinalizer.java
+++ b/hyracks-storage-am-lsm-common/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/common/impls/TreeIndexComponentFinalizer.java
@@ -47,7 +47,7 @@
         ITreeIndex treeIndex = (ITreeIndex) lsmComponent;
         int fileId = treeIndex.getFileId();
         IBufferCache bufferCache = treeIndex.getBufferCache();
-        // Flush all dirty pages of the BTree. 
+        // Flush all dirty pages of the tree. 
         // By default, metadata and data are flushed async in the buffercache.
         // This means that the flush issues writes to the OS, but the data may still lie in filesystem buffers.
         ITreeIndexMetaDataFrame metadataFrame = treeIndex.getFreePageManager().getMetaDataFrameFactory().createFrame();        
diff --git a/hyracks-storage-am-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/impls/RTree.java b/hyracks-storage-am-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/impls/RTree.java
index b826544..09096ef 100644
--- a/hyracks-storage-am-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/impls/RTree.java
+++ b/hyracks-storage-am-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/impls/RTree.java
@@ -199,6 +199,11 @@
         return fileId;
     }
 
+    @Override
+    public IBufferCache getBufferCache() {
+        return bufferCache;
+    }
+
     private RTreeOpContext createOpContext() {
         return new RTreeOpContext((IRTreeLeafFrame) leafFrameFactory.createFrame(),
                 (IRTreeInteriorFrame) interiorFrameFactory.createFrame(), freePageManager.getMetaDataFrameFactory()