diff --git a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/datagen/DocumentStringFieldValueGenerator.java b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/datagen/DocumentStringFieldValueGenerator.java
index 4746b06..78c9eae 100644
--- a/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/datagen/DocumentStringFieldValueGenerator.java
+++ b/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/datagen/DocumentStringFieldValueGenerator.java
@@ -32,7 +32,7 @@
     private final Random rnd;
     private int[] cumulIntRanges;
 
-    private List<String> TOKEN_DICT = new ArrayList<String>();
+    private List<String> tokenDict = new ArrayList<String>();
 
     public DocumentStringFieldValueGenerator(int docMinWords, int docMaxWords, int maxDictionarySize, Random rnd)
             throws IOException {
@@ -41,7 +41,7 @@
         this.maxDictionarySize = maxDictionarySize;
         this.rnd = rnd;
         initDictionary();
-        double[] zipfProbDist = ProbabilityHelper.getZipfProbDist(TOKEN_DICT.size(), 1);
+        double[] zipfProbDist = ProbabilityHelper.getZipfProbDist(tokenDict.size(), 1);
         cumulIntRanges = ProbabilityHelper.getCumulIntRanges(zipfProbDist);
     }
 
@@ -53,7 +53,7 @@
         BufferedReader firstNamesReader = new BufferedReader(new FileReader(FIRST_NAMES_FILE));
         try {
             while (count < maxDictionarySize && (line = firstNamesReader.readLine()) != null) {
-                TOKEN_DICT.add(line.trim());
+                tokenDict.add(line.trim());
                 count++;
             }
         } finally {
@@ -64,7 +64,7 @@
         BufferedReader lastNamesReader = new BufferedReader(new FileReader(LAST_NAMES_FILE));
         try {
             while (count < maxDictionarySize && (line = lastNamesReader.readLine()) != null) {
-                TOKEN_DICT.add(line.trim());
+                tokenDict.add(line.trim());
                 count++;
             }
         } finally {
@@ -78,11 +78,15 @@
         int numWords = Math.abs(rnd.nextInt()) % (docMaxWords - docMinWords + 1) + docMinWords;
         for (int i = 0; i < numWords; i++) {
             int ix = ProbabilityHelper.choose(cumulIntRanges, rnd.nextInt());
-            strBuilder.append(TOKEN_DICT.get(ix));
+            strBuilder.append(tokenDict.get(ix));
             if (i != numWords - 1) {
                 strBuilder.append(" ");
             }
         }
         return strBuilder.toString();
     }
+
+    public List<String> getTokenDictionary() {
+        return tokenDict;
+    }
 }
diff --git a/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/api/IInvertedIndex.java b/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/api/IInvertedIndex.java
index e572213..de54870 100644
--- a/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/api/IInvertedIndex.java
+++ b/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/api/IInvertedIndex.java
@@ -29,7 +29,11 @@
     public void openInvertedListCursor(IInvertedListCursor listCursor, ITupleReference searchKey, IIndexOpContext ictx)
             throws HyracksDataException, IndexException;
 
-    public IBinaryComparatorFactory[] getInvListCmpFactories();
-
     public ITypeTraits[] getInvListTypeTraits();
+    
+    public IBinaryComparatorFactory[] getInvListCmpFactories();    
+    
+    public ITypeTraits[] getTokenTypeTraits();
+    
+    public IBinaryComparatorFactory[] getTokenCmpFactories();        
 }
\ No newline at end of file
diff --git a/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/inmemory/InMemoryInvertedIndex.java b/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/inmemory/InMemoryInvertedIndex.java
index 4361e98..05c3cbe 100644
--- a/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/inmemory/InMemoryInvertedIndex.java
+++ b/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/inmemory/InMemoryInvertedIndex.java
@@ -202,4 +202,14 @@
     public IIndexBulkLoader createBulkLoader(float fillFactor, boolean verifyInput) throws IndexException {
         throw new UnsupportedOperationException("Bulk load not supported by in-memory inverted index.");
     }
+
+    @Override
+    public ITypeTraits[] getTokenTypeTraits() {
+        return tokenTypeTraits;
+    }
+
+    @Override
+    public IBinaryComparatorFactory[] getTokenCmpFactories() {
+        return tokenCmpFactories;
+    }
 }
diff --git a/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndex.java b/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndex.java
index fb45e343c..8509d6b 100644
--- a/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndex.java
+++ b/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/ondisk/OnDiskInvertedIndex.java
@@ -91,6 +91,8 @@
     private int fileId = -1;
     private final ITypeTraits[] invListTypeTraits;
     private final IBinaryComparatorFactory[] invListCmpFactories;
+    private final ITypeTraits[] tokenTypeTraits;
+    private final IBinaryComparatorFactory[] tokenCmpFactories;
     private final IInvertedListBuilder invListBuilder;
     private final int numTokenFields;
     private final int numInvListKeys;
@@ -108,6 +110,8 @@
         this.invListBuilder = invListBuilder;
         this.invListTypeTraits = invListTypeTraits;
         this.invListCmpFactories = invListCmpFactories;
+        this.tokenTypeTraits = tokenTypeTraits;
+        this.tokenCmpFactories = tokenCmpFactories;
         this.btree = BTreeUtils.createBTree(bufferCache, fileMapProvider, getBTreeTypeTraits(tokenTypeTraits),
                 tokenCmpFactories, BTreeLeafFrameType.REGULAR_NSM, btreeFile);
         this.numTokenFields = btree.getComparatorFactories().length;
@@ -520,4 +524,14 @@
         }
         return btreeTypeTraits;
     }
+
+    @Override
+    public ITypeTraits[] getTokenTypeTraits() {
+        return tokenTypeTraits;
+    }
+
+    @Override
+    public IBinaryComparatorFactory[] getTokenCmpFactories() {
+        return tokenCmpFactories;
+    }
 }
diff --git a/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/LSMInvertedIndexUtils.java b/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexUtils.java
similarity index 99%
rename from hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/LSMInvertedIndexUtils.java
rename to hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexUtils.java
index cd46408..73c5330 100644
--- a/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/LSMInvertedIndexUtils.java
+++ b/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexUtils.java
@@ -31,7 +31,7 @@
 import edu.uci.ics.hyracks.storage.common.buffercache.IBufferCache;
 import edu.uci.ics.hyracks.storage.common.file.IFileMapProvider;
 
-public class LSMInvertedIndexUtils {
+public class InvertedIndexUtils {
     
     public static InMemoryInvertedIndex createInMemoryBTreeInvertedindex(IBufferCache memBufferCache,
             IFreePageManager memFreePageManager, ITypeTraits[] invListTypeTraits,
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/OrderedIndexTestContext.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/OrderedIndexTestContext.java
index f75a1f1..9c08905 100644
--- a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/OrderedIndexTestContext.java
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/OrderedIndexTestContext.java
@@ -20,16 +20,16 @@
 
 import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
 import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
-import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestContext;
-import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndex;
+import edu.uci.ics.hyracks.storage.am.common.IndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
 
 @SuppressWarnings("rawtypes")
-public abstract class OrderedIndexTestContext extends TreeIndexTestContext<CheckTuple> {
+public abstract class OrderedIndexTestContext extends IndexTestContext<CheckTuple> {
 
     protected final TreeSet<CheckTuple> checkTuples = new TreeSet<CheckTuple>();
 
-    public OrderedIndexTestContext(ISerializerDeserializer[] fieldSerdes, ITreeIndex treeIndex) {
-        super(fieldSerdes, treeIndex);
+    public OrderedIndexTestContext(ISerializerDeserializer[] fieldSerdes, IIndex index) {
+        super(fieldSerdes, index);
     }
 
     public void upsertCheckTuple(CheckTuple checkTuple, Collection<CheckTuple> checkTuples) {
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/OrderedIndexTestUtils.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/OrderedIndexTestUtils.java
index 9909e2f..605dbd7 100644
--- a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/OrderedIndexTestUtils.java
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/btree/OrderedIndexTestUtils.java
@@ -25,7 +25,7 @@
 import edu.uci.ics.hyracks.storage.am.btree.impls.RangePredicate;
 import edu.uci.ics.hyracks.storage.am.btree.util.BTreeUtils;
 import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
-import edu.uci.ics.hyracks.storage.am.common.ITreeIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.IIndexTestContext;
 import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestUtils;
 import edu.uci.ics.hyracks.storage.am.common.api.IIndexCursor;
 import edu.uci.ics.hyracks.storage.am.common.api.ISearchPredicate;
@@ -83,7 +83,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void checkRangeSearch(ITreeIndexTestContext ctx, ITupleReference lowKey, ITupleReference highKey,
+    public void checkRangeSearch(IIndexTestContext ctx, ITupleReference lowKey, ITupleReference highKey,
             boolean lowKeyInclusive, boolean highKeyInclusive) throws Exception {
         if (LOGGER.isLoggable(Level.INFO)) {
             LOGGER.info("Testing Range Search.");
@@ -132,7 +132,7 @@
         }
     }
 
-    public void checkPointSearches(ITreeIndexTestContext ictx) throws Exception {
+    public void checkPointSearches(IIndexTestContext ictx) throws Exception {
         if (LOGGER.isLoggable(Level.INFO)) {
             LOGGER.info("Testing Point Searches On All Expected Keys.");
         }
@@ -177,7 +177,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void insertStringTuples(ITreeIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
+    public void insertStringTuples(IIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
         int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
         String[] fieldValues = new String[fieldCount];
@@ -208,7 +208,7 @@
         }
     }
     
-    public void upsertStringTuples(ITreeIndexTestContext ictx, int numTuples, Random rnd) throws Exception {
+    public void upsertStringTuples(IIndexTestContext ictx, int numTuples, Random rnd) throws Exception {
     	OrderedIndexTestContext ctx = (OrderedIndexTestContext) ictx;
     	int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
@@ -235,7 +235,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void bulkLoadStringTuples(ITreeIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
+    public void bulkLoadStringTuples(IIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
         int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
         String[] fieldValues = new String[fieldCount];
@@ -262,7 +262,7 @@
         }
     }
 
-    public void upsertIntTuples(ITreeIndexTestContext ictx, int numTuples, Random rnd) throws Exception {
+    public void upsertIntTuples(IIndexTestContext ictx, int numTuples, Random rnd) throws Exception {
         OrderedIndexTestContext ctx = (OrderedIndexTestContext) ictx;
     	int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
@@ -288,7 +288,7 @@
     }
     
     @SuppressWarnings("unchecked")
-    public void updateTuples(ITreeIndexTestContext ictx, int numTuples, Random rnd) throws Exception {
+    public void updateTuples(IIndexTestContext ictx, int numTuples, Random rnd) throws Exception {
         OrderedIndexTestContext ctx = (OrderedIndexTestContext) ictx;
         int fieldCount = ctx.getFieldCount();
         int keyFieldCount = ctx.getKeyFieldCount();
@@ -421,12 +421,12 @@
     }
 
     @Override
-    protected ArrayTupleBuilder createDeleteTupleBuilder(ITreeIndexTestContext ctx) {
+    protected ArrayTupleBuilder createDeleteTupleBuilder(IIndexTestContext ctx) {
         return new ArrayTupleBuilder(ctx.getKeyFieldCount());
     }
 
     @Override
-    protected boolean checkDiskOrderScanResult(ITupleReference tuple, CheckTuple checkTuple, ITreeIndexTestContext ctx)
+    protected boolean checkDiskOrderScanResult(ITupleReference tuple, CheckTuple checkTuple, IIndexTestContext ctx)
             throws HyracksDataException {
         @SuppressWarnings("unchecked")
         TreeSet<CheckTuple> checkTuples = (TreeSet<CheckTuple>) ctx.getCheckTuples();
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/ITreeIndexTestContext.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/IIndexTestContext.java
similarity index 91%
rename from hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/ITreeIndexTestContext.java
rename to hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/IIndexTestContext.java
index 9be3e29..3ab5243 100644
--- a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/ITreeIndexTestContext.java
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/IIndexTestContext.java
@@ -22,10 +22,10 @@
 import edu.uci.ics.hyracks.dataflow.common.comm.io.ArrayTupleBuilder;
 import edu.uci.ics.hyracks.dataflow.common.comm.io.ArrayTupleReference;
 import edu.uci.ics.hyracks.storage.am.common.api.IIndexAccessor;
-import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
 
 @SuppressWarnings("rawtypes")
-public interface ITreeIndexTestContext<T extends CheckTuple> {
+public interface IIndexTestContext<T extends CheckTuple> {
     public int getFieldCount();
 
     public int getKeyFieldCount();
@@ -36,7 +36,7 @@
 
     public IIndexAccessor getIndexAccessor();
 
-    public ITreeIndex getIndex();
+    public IIndex getIndex();
 
     public ArrayTupleReference getTuple();
 
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TreeIndexTestContext.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/IndexTestContext.java
similarity index 81%
rename from hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TreeIndexTestContext.java
rename to hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/IndexTestContext.java
index 44de3a5..780c413 100644
--- a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TreeIndexTestContext.java
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/IndexTestContext.java
@@ -21,20 +21,20 @@
 import edu.uci.ics.hyracks.dataflow.common.comm.io.ArrayTupleBuilder;
 import edu.uci.ics.hyracks.dataflow.common.comm.io.ArrayTupleReference;
 import edu.uci.ics.hyracks.storage.am.common.api.IIndexAccessor;
-import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndex;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
 
 @SuppressWarnings("rawtypes")
-public abstract class TreeIndexTestContext<T extends CheckTuple> implements ITreeIndexTestContext<T> {
+public abstract class IndexTestContext<T extends CheckTuple> implements IIndexTestContext<T> {
     protected final ISerializerDeserializer[] fieldSerdes;
-    protected final ITreeIndex treeIndex;
+    protected final IIndex index;
     protected final ArrayTupleBuilder tupleBuilder;
     protected final ArrayTupleReference tuple = new ArrayTupleReference();
     protected final IIndexAccessor indexAccessor;
 
-    public TreeIndexTestContext(ISerializerDeserializer[] fieldSerdes, ITreeIndex treeIndex) {
+    public IndexTestContext(ISerializerDeserializer[] fieldSerdes, IIndex index) {
         this.fieldSerdes = fieldSerdes;
-        this.treeIndex = treeIndex;
-        this.indexAccessor = (IIndexAccessor) treeIndex.createAccessor(TestOperationCallback.INSTANCE,
+        this.index = index;
+        this.indexAccessor = (IIndexAccessor) index.createAccessor(TestOperationCallback.INSTANCE,
                 TestOperationCallback.INSTANCE);
         this.tupleBuilder = new ArrayTupleBuilder(fieldSerdes.length);
     }
@@ -65,8 +65,8 @@
     }
 
     @Override
-    public ITreeIndex getIndex() {
-        return treeIndex;
+    public IIndex getIndex() {
+        return index;
     }
 
     @Override
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TreeIndexTestUtils.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TreeIndexTestUtils.java
index 4d87213..818373c 100644
--- a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TreeIndexTestUtils.java
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/common/TreeIndexTestUtils.java
@@ -59,11 +59,11 @@
 
     protected abstract Collection createCheckTuplesCollection();
 
-    protected abstract ArrayTupleBuilder createDeleteTupleBuilder(ITreeIndexTestContext ctx);
+    protected abstract ArrayTupleBuilder createDeleteTupleBuilder(IIndexTestContext ctx);
 
     // See if tuple with corresponding checkTuple exists in ctx.checkTuples.
     protected abstract boolean checkDiskOrderScanResult(ITupleReference tuple, CheckTuple checkTuple,
-            ITreeIndexTestContext ctx) throws HyracksDataException;
+            IIndexTestContext ctx) throws HyracksDataException;
 
     @SuppressWarnings("unchecked")
     public static void createTupleFromCheckTuple(CheckTuple checkTuple, ArrayTupleBuilder tupleBuilder,
@@ -94,7 +94,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void checkScan(ITreeIndexTestContext ctx) throws Exception {
+    public void checkScan(IIndexTestContext ctx) throws Exception {
         if (LOGGER.isLoggable(Level.INFO)) {
             LOGGER.info("Testing Scan.");
         }
@@ -105,7 +105,7 @@
         checkExpectedResults(scanCursor, ctx.getCheckTuples(), ctx.getFieldSerdes(), ctx.getKeyFieldCount(), checkIter);
     }
 
-    public void checkDiskOrderScan(ITreeIndexTestContext ctx) throws Exception {
+    public void checkDiskOrderScan(IIndexTestContext ctx) throws Exception {
     	try {
             if (LOGGER.isLoggable(Level.INFO)) {
                 LOGGER.info("Testing Disk-Order Scan.");
@@ -152,7 +152,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void insertIntTuples(ITreeIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
+    public void insertIntTuples(IIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
         int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
         int[] fieldValues = new int[ctx.getFieldCount()];
@@ -182,7 +182,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void upsertIntTuples(ITreeIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
+    public void upsertIntTuples(IIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
         int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
         int[] fieldValues = new int[ctx.getFieldCount()];
@@ -212,7 +212,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void bulkLoadIntTuples(ITreeIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
+    public void bulkLoadIntTuples(IIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
         int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
         int[] fieldValues = new int[ctx.getFieldCount()];
@@ -236,7 +236,7 @@
         }
     }
 
-    public static void bulkLoadCheckTuples(ITreeIndexTestContext ctx, Collection<CheckTuple> checkTuples)
+    public static void bulkLoadCheckTuples(IIndexTestContext ctx, Collection<CheckTuple> checkTuples)
             throws HyracksDataException, IndexException {
         int fieldCount = ctx.getFieldCount();
         int numTuples = checkTuples.size();
@@ -259,7 +259,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void deleteTuples(ITreeIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
+    public void deleteTuples(IIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
         ArrayTupleBuilder deleteTupleBuilder = createDeleteTupleBuilder(ctx);
         ArrayTupleReference deleteTuple = new ArrayTupleReference();
         int numCheckTuples = ctx.getCheckTuples().size();
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/AbstractRTreeTestContext.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/AbstractRTreeTestContext.java
index 32afdad..eed8df6 100644
--- a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/AbstractRTreeTestContext.java
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/AbstractRTreeTestContext.java
@@ -18,12 +18,12 @@
 import java.util.Collection;
 
 import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
-import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.IndexTestContext;
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndex;
 import edu.uci.ics.hyracks.storage.am.common.util.HashMultiSet;
 
 @SuppressWarnings("rawtypes")
-public abstract class AbstractRTreeTestContext extends TreeIndexTestContext<RTreeCheckTuple> {
+public abstract class AbstractRTreeTestContext extends IndexTestContext<RTreeCheckTuple> {
     private final HashMultiSet<RTreeCheckTuple> checkTuples = new HashMultiSet<RTreeCheckTuple>();
 	
     public AbstractRTreeTestContext(ISerializerDeserializer[] fieldSerdes, ITreeIndex treeIndex) {
diff --git a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/RTreeTestUtils.java b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/RTreeTestUtils.java
index 784d4bc..067c6cb 100644
--- a/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/RTreeTestUtils.java
+++ b/hyracks-test-support/src/main/java/edu/uci/ics/hyracks/storage/am/rtree/RTreeTestUtils.java
@@ -15,7 +15,7 @@
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;
 import edu.uci.ics.hyracks.dataflow.common.util.TupleUtils;
 import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
-import edu.uci.ics.hyracks.storage.am.common.ITreeIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.IIndexTestContext;
 import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestUtils;
 import edu.uci.ics.hyracks.storage.am.common.api.ISearchPredicate;
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexCursor;
@@ -46,7 +46,7 @@
         return expectedResult;
     }
 
-    public void checkRangeSearch(ITreeIndexTestContext ictx, ITupleReference key) throws Exception {
+    public void checkRangeSearch(IIndexTestContext ictx, ITupleReference key) throws Exception {
         if (LOGGER.isLoggable(Level.INFO)) {
             LOGGER.info("Testing Range Search.");
         }
@@ -69,7 +69,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void insertDoubleTuples(ITreeIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
+    public void insertDoubleTuples(IIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
         int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
         double[] fieldValues = new double[ctx.getFieldCount()];
@@ -129,7 +129,7 @@
     }
 
     @SuppressWarnings("unchecked")
-    public void bulkLoadDoubleTuples(ITreeIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
+    public void bulkLoadDoubleTuples(IIndexTestContext ctx, int numTuples, Random rnd) throws Exception {
         int fieldCount = ctx.getFieldCount();
         int numKeyFields = ctx.getKeyFieldCount();
         double[] fieldValues = new double[ctx.getFieldCount()];
@@ -228,12 +228,12 @@
     }
 
     @Override
-    protected ArrayTupleBuilder createDeleteTupleBuilder(ITreeIndexTestContext ctx) {
+    protected ArrayTupleBuilder createDeleteTupleBuilder(IIndexTestContext ctx) {
         return new ArrayTupleBuilder(ctx.getFieldCount());
     }
 
     @Override
-    protected boolean checkDiskOrderScanResult(ITupleReference tuple, CheckTuple checkTuple, ITreeIndexTestContext ctx)
+    protected boolean checkDiskOrderScanResult(ITupleReference tuple, CheckTuple checkTuple, IIndexTestContext ctx)
             throws HyracksDataException {
         return ctx.getCheckTuples().contains(checkTuple);
     }
diff --git a/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/btree/BTreeLifecycleTest.java b/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/btree/BTreeLifecycleTest.java
index 2e5a067..1445d2c 100644
--- a/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/btree/BTreeLifecycleTest.java
+++ b/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/btree/BTreeLifecycleTest.java
@@ -9,7 +9,7 @@
 import edu.uci.ics.hyracks.storage.am.btree.util.BTreeTestHarness;
 import edu.uci.ics.hyracks.storage.am.common.AbstractIndexLifecycleTest;
 import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
-import edu.uci.ics.hyracks.storage.am.common.ITreeIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.IIndexTestContext;
 import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestUtils;
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexFrame;
 
@@ -23,7 +23,7 @@
     private ITreeIndexFrame frame = null;
 
     @SuppressWarnings("rawtypes")
-    private ITreeIndexTestContext<? extends CheckTuple> testCtx;
+    private IIndexTestContext<? extends CheckTuple> testCtx;
 
     @Override
     public void setup() throws Exception {
diff --git a/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/btree/util/BTreeTestContext.java b/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/btree/util/BTreeTestContext.java
index a3fead7..1d63b85 100644
--- a/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/btree/util/BTreeTestContext.java
+++ b/hyracks-tests/hyracks-storage-am-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/btree/util/BTreeTestContext.java
@@ -36,13 +36,13 @@
 
     @Override
     public int getKeyFieldCount() {
-        BTree btree = (BTree) treeIndex;
+        BTree btree = (BTree) index;
         return btree.getComparatorFactories().length;
     }
 
     @Override
     public IBinaryComparatorFactory[] getComparatorFactories() {
-        BTree btree = (BTree) treeIndex;
+        BTree btree = (BTree) index;
         return btree.getComparatorFactories();
     }
 
diff --git a/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/LSMBTreeLifecycleTest.java b/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/LSMBTreeLifecycleTest.java
index 021e2b8..2e8fcaf 100644
--- a/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/LSMBTreeLifecycleTest.java
+++ b/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/LSMBTreeLifecycleTest.java
@@ -7,7 +7,7 @@
 import edu.uci.ics.hyracks.storage.am.btree.OrderedIndexTestUtils;
 import edu.uci.ics.hyracks.storage.am.common.AbstractIndexLifecycleTest;
 import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
-import edu.uci.ics.hyracks.storage.am.common.ITreeIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.IIndexTestContext;
 import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestUtils;
 import edu.uci.ics.hyracks.storage.am.lsm.btree.impls.LSMBTree;
 import edu.uci.ics.hyracks.storage.am.lsm.btree.util.LSMBTreeTestContext;
@@ -21,7 +21,7 @@
     private final TreeIndexTestUtils titu = new OrderedIndexTestUtils();
 
     @SuppressWarnings("rawtypes")
-    private ITreeIndexTestContext<? extends CheckTuple> testCtx;
+    private IIndexTestContext<? extends CheckTuple> testCtx;
 
     @Override
     protected boolean persistentStateExists() throws Exception {
diff --git a/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/util/LSMBTreeTestContext.java b/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/util/LSMBTreeTestContext.java
index 35ee472..ba0ae21 100644
--- a/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/util/LSMBTreeTestContext.java
+++ b/hyracks-tests/hyracks-storage-am-lsm-btree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/btree/util/LSMBTreeTestContext.java
@@ -45,13 +45,13 @@
 
     @Override
     public int getKeyFieldCount() {
-        LSMBTree lsmTree = (LSMBTree) treeIndex;
+        LSMBTree lsmTree = (LSMBTree) index;
         return lsmTree.getComparatorFactories().length;
     }
 
     @Override
     public IBinaryComparatorFactory[] getComparatorFactories() {
-        LSMBTree lsmTree = (LSMBTree) treeIndex;
+        LSMBTree lsmTree = (LSMBTree) index;
         return lsmTree.getComparatorFactories();
     }
 
diff --git a/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/AbstractInvertedIndexTest.java b/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/AbstractInvertedIndexTest.java
index 51a47d0..351b772 100644
--- a/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/AbstractInvertedIndexTest.java
+++ b/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/AbstractInvertedIndexTest.java
@@ -72,8 +72,8 @@
     // This number will only be used in generating random documents.
     // If predefined data is generated, then the number of documents is fixed.
     protected int numDocuments = 1000;
-    protected int maxDocumentLength = 200;
-    protected List<String> documents = new ArrayList<String>();
+    protected int docMinWords = 2;
+    protected int docMaxWords = 10;
     protected Map<String, SortedSet<Integer>> baselineInvertedIndex = new HashMap<String, SortedSet<Integer>>();
 
     // Generate random data is false by default (generate predefined data is true!)
diff --git a/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexTestContext.java b/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexTestContext.java
new file mode 100644
index 0000000..3349d3a
--- /dev/null
+++ b/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexTestContext.java
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2009-2010 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.lsm.invertedindex.util;
+
+import java.util.Collection;
+
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
+import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
+import edu.uci.ics.hyracks.api.io.FileReference;
+import edu.uci.ics.hyracks.dataflow.common.util.SerdeUtils;
+import edu.uci.ics.hyracks.storage.am.btree.OrderedIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
+import edu.uci.ics.hyracks.storage.am.common.api.IFreePageManager;
+import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.api.IInvertedIndex;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.exceptions.InvertedIndexException;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.tokenizers.IBinaryTokenizer;
+import edu.uci.ics.hyracks.storage.common.buffercache.IBufferCache;
+import edu.uci.ics.hyracks.storage.common.file.IFileMapProvider;
+
+@SuppressWarnings("rawtypes")
+public class InvertedIndexTestContext extends OrderedIndexTestContext {
+
+    public static enum InvertedIndexType {
+        INMEMORY,
+        ONDISK,
+        LSM
+    };
+
+    protected IBinaryComparatorFactory[] allCmpFactories;
+
+    public InvertedIndexTestContext(ISerializerDeserializer[] fieldSerdes, IIndex index) {
+        super(fieldSerdes, index);
+    }
+
+    @Override
+    public int getKeyFieldCount() {
+        return fieldSerdes.length;
+    }
+
+    @Override
+    public IBinaryComparatorFactory[] getComparatorFactories() {
+        if (allCmpFactories == null) {
+            // Concatenate token and inv-list comparators.
+            IInvertedIndex invIndex = (IInvertedIndex) index;
+            IBinaryComparatorFactory[] tokenCmpFactories = invIndex.getTokenCmpFactories();
+            IBinaryComparatorFactory[] invListCmpFactories = invIndex.getInvListCmpFactories();
+            int totalCmpCount = tokenCmpFactories.length + invListCmpFactories.length;
+            allCmpFactories = new IBinaryComparatorFactory[totalCmpCount];
+            for (int i = 0; i < tokenCmpFactories.length; i++) {
+                allCmpFactories[i] = tokenCmpFactories[i];
+            }
+            for (int i = 0; i < invListCmpFactories.length; i++) {
+                allCmpFactories[i + tokenCmpFactories.length] = invListCmpFactories[i];
+            }
+        }
+        return allCmpFactories;
+    }
+
+    @Override
+    public void insertCheckTuple(CheckTuple checkTuple, Collection<CheckTuple> checkTuples) {
+        // TODO: Tokenize and insert <token,key> pairs.
+        checkTuples.add(checkTuple);
+    }
+
+    @Override
+    public void deleteCheckTuple(CheckTuple checkTuple, Collection<CheckTuple> checkTuples) {
+        // TODO: Tokenize and insert <token,key> pairs.
+        checkTuples.remove(checkTuple);
+    }
+    
+    public static InvertedIndexTestContext create(IBufferCache bufferCache, IFreePageManager freePageManager,
+            IFileMapProvider fileMapProvider, FileReference invListsFile, ISerializerDeserializer[] fieldSerdes,
+            int tokenFieldCount, IBinaryTokenizer tokenizer, InvertedIndexType invIndexType) throws Exception {
+        ITypeTraits[] allTypeTraits = SerdeUtils.serdesToTypeTraits(fieldSerdes);
+        IBinaryComparatorFactory[] allCmpFactories = SerdeUtils.serdesToComparatorFactories(fieldSerdes,
+                fieldSerdes.length);
+        // Set token type traits and comparators.
+        ITypeTraits[] tokenTypeTraits = new ITypeTraits[tokenFieldCount];
+        IBinaryComparatorFactory[] tokenCmpFactories = new IBinaryComparatorFactory[tokenFieldCount];
+        for (int i = 0; i < tokenTypeTraits.length; i++) {
+            tokenTypeTraits[i] = allTypeTraits[i];
+            tokenCmpFactories[i] = allCmpFactories[i];
+        }
+        // Set inverted-list element type traits and comparators.
+        int invListFieldCount = fieldSerdes.length - tokenFieldCount;
+        ITypeTraits[] invListTypeTraits = new ITypeTraits[invListFieldCount];
+        IBinaryComparatorFactory[] invListCmpFactories = new IBinaryComparatorFactory[invListFieldCount];
+        for (int i = 0; i < invListTypeTraits.length; i++) {
+            invListTypeTraits[i] = allTypeTraits[i + tokenFieldCount];
+            invListCmpFactories[i] = allCmpFactories[i + tokenFieldCount];
+        }
+        // Create index and test context.
+        IInvertedIndex invIndex;
+        switch (invIndexType) {
+            case INMEMORY: {
+                invIndex = InvertedIndexUtils.createInMemoryBTreeInvertedindex(bufferCache, freePageManager,
+                        invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories, tokenizer);
+                break;
+            }
+            case ONDISK: {
+                invIndex = InvertedIndexUtils.createOnDiskInvertedIndex(bufferCache, fileMapProvider,
+                        invListTypeTraits, invListCmpFactories, tokenTypeTraits, tokenCmpFactories, invListsFile);
+                break;
+            }
+            default: {
+                throw new InvertedIndexException("Unknow inverted-index type '" + invIndexType + "'.");
+            }
+        }
+        InvertedIndexTestContext testCtx = new InvertedIndexTestContext(fieldSerdes, invIndex);
+        return testCtx;
+    }
+    
+    @Override
+    public void upsertCheckTuple(CheckTuple checkTuple, Collection<CheckTuple> checkTuples) {
+        throw new UnsupportedOperationException("Upsert not supported by inverted index.");
+    }
+}
diff --git a/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexTestUtils.java b/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexTestUtils.java
index 661278c..b22117d 100644
--- a/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexTestUtils.java
+++ b/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/util/InvertedIndexTestUtils.java
@@ -37,7 +37,7 @@
 import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.inmemory.InMemoryInvertedIndex;
 import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.ondisk.OnDiskInvertedIndex;
 import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.tokenizers.IBinaryTokenizer;
-import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.util.LSMInvertedIndexUtils;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.util.InvertedIndexUtils;
 
 public class InvertedIndexTestUtils {
     public static OnDiskInvertedIndex createTestInvertedIndex(LSMInvertedIndexTestHarness harness, IBinaryTokenizer tokenizer)
@@ -53,13 +53,13 @@
                 metaFrameFactory);
         IBinaryComparatorFactory[] btreeCmpFactories = new IBinaryComparatorFactory[] { PointableBinaryComparatorFactory
                 .of(UTF8StringPointable.FACTORY) };
-        return LSMInvertedIndexUtils.createInvertedIndex(harness.getDiskBufferCache(), 
+        return InvertedIndexUtils.createInvertedIndex(harness.getDiskBufferCache(), 
                 harness.getInvertedListTypeTraits(), harness.getInvertedListBinaryComparatorFactories(), tokenizer);
     }
 
     public static InMemoryInvertedIndex createInMemoryInvertedIndex(LSMInvertedIndexTestHarness harness,
             IBinaryTokenizer tokenizer) {
-        return LSMInvertedIndexUtils.createInMemoryBTreeInvertedindex(harness.getMemBufferCache(),
+        return InvertedIndexUtils.createInMemoryBTreeInvertedindex(harness.getMemBufferCache(),
                 harness.getMemFreePageManager(), harness.getTokenTypeTraits(), harness.getInvertedListTypeTraits(),
                 harness.getTokenBinaryComparatorFactories(), harness.getInvertedListBinaryComparatorFactories(),
                 tokenizer);
@@ -67,7 +67,7 @@
 
     public static LSMInvertedIndex createLSMInvertedIndex(LSMInvertedIndexTestHarness harness,
             IBinaryTokenizer tokenizer) {
-        return LSMInvertedIndexUtils.createLSMInvertedIndex(harness.getMemBufferCache(),
+        return InvertedIndexUtils.createLSMInvertedIndex(harness.getMemBufferCache(),
                 harness.getMemFreePageManager(), harness.getTokenTypeTraits(), harness.getInvertedListTypeTraits(),
                 harness.getTokenBinaryComparatorFactories(), harness.getInvertedListBinaryComparatorFactories(),
                 tokenizer, harness.getDiskBufferCache(),
diff --git a/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/LSMRTreeLifecycleTest.java b/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/LSMRTreeLifecycleTest.java
index f1c99d5..cfba169 100644
--- a/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/LSMRTreeLifecycleTest.java
+++ b/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/LSMRTreeLifecycleTest.java
@@ -7,7 +7,7 @@
 import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
 import edu.uci.ics.hyracks.storage.am.common.AbstractIndexLifecycleTest;
 import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
-import edu.uci.ics.hyracks.storage.am.common.ITreeIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.IIndexTestContext;
 import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestUtils;
 import edu.uci.ics.hyracks.storage.am.common.api.IPrimitiveValueProviderFactory;
 import edu.uci.ics.hyracks.storage.am.lsm.rtree.impls.LSMRTree;
@@ -31,7 +31,7 @@
     private final TreeIndexTestUtils titu = new RTreeTestUtils();
 
     @SuppressWarnings("rawtypes")
-    private ITreeIndexTestContext<? extends CheckTuple> testCtx;
+    private IIndexTestContext<? extends CheckTuple> testCtx;
 
     @Override
     protected boolean persistentStateExists() throws Exception {
diff --git a/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesLifecycleTest.java b/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesLifecycleTest.java
index b644307..0930512 100644
--- a/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesLifecycleTest.java
+++ b/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/LSMRTreeWithAntiMatterTuplesLifecycleTest.java
@@ -7,7 +7,7 @@
 import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
 import edu.uci.ics.hyracks.storage.am.common.AbstractIndexLifecycleTest;
 import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
-import edu.uci.ics.hyracks.storage.am.common.ITreeIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.IIndexTestContext;
 import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestUtils;
 import edu.uci.ics.hyracks.storage.am.common.api.IPrimitiveValueProviderFactory;
 import edu.uci.ics.hyracks.storage.am.lsm.rtree.impls.LSMRTreeWithAntiMatterTuples;
@@ -31,7 +31,7 @@
     private final TreeIndexTestUtils titu = new RTreeTestUtils();
 
     @SuppressWarnings("rawtypes")
-    private ITreeIndexTestContext<? extends CheckTuple> testCtx;
+    private IIndexTestContext<? extends CheckTuple> testCtx;
 
     @Override
     protected boolean persistentStateExists() throws Exception {
diff --git a/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestContext.java b/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestContext.java
index 0ecc65e..eb660f1 100644
--- a/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestContext.java
+++ b/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/util/LSMRTreeTestContext.java
@@ -48,7 +48,7 @@
 
     @Override
     public int getKeyFieldCount() {
-        LSMRTree lsmTree = (LSMRTree) treeIndex;
+        LSMRTree lsmTree = (LSMRTree) index;
         return lsmTree.getComparatorFactories().length;
     }
 
@@ -63,7 +63,7 @@
 
     @Override
     public IBinaryComparatorFactory[] getComparatorFactories() {
-        LSMRTree lsmTree = (LSMRTree) treeIndex;
+        LSMRTree lsmTree = (LSMRTree) index;
         return lsmTree.getComparatorFactories();
     }
 
diff --git a/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/util/LSMRTreeWithAntiMatterTuplesTestContext.java b/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/util/LSMRTreeWithAntiMatterTuplesTestContext.java
index 14ad60d..7cd4d9d 100644
--- a/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/util/LSMRTreeWithAntiMatterTuplesTestContext.java
+++ b/hyracks-tests/hyracks-storage-am-lsm-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/util/LSMRTreeWithAntiMatterTuplesTestContext.java
@@ -48,7 +48,7 @@
 
     @Override
     public int getKeyFieldCount() {
-        LSMRTreeWithAntiMatterTuples lsmTree = (LSMRTreeWithAntiMatterTuples) treeIndex;
+        LSMRTreeWithAntiMatterTuples lsmTree = (LSMRTreeWithAntiMatterTuples) index;
         return lsmTree.getComparatorFactories().length;
     }
 
@@ -63,7 +63,7 @@
 
     @Override
     public IBinaryComparatorFactory[] getComparatorFactories() {
-        LSMRTreeWithAntiMatterTuples lsmTree = (LSMRTreeWithAntiMatterTuples) treeIndex;
+        LSMRTreeWithAntiMatterTuples lsmTree = (LSMRTreeWithAntiMatterTuples) index;
         return lsmTree.getComparatorFactories();
     }
 
diff --git a/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/rtree/RTreeLifecycleTest.java b/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/rtree/RTreeLifecycleTest.java
index 2251875..69c7e15 100644
--- a/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/rtree/RTreeLifecycleTest.java
+++ b/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/rtree/RTreeLifecycleTest.java
@@ -6,7 +6,7 @@
 import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
 import edu.uci.ics.hyracks.storage.am.common.AbstractIndexLifecycleTest;
 import edu.uci.ics.hyracks.storage.am.common.CheckTuple;
-import edu.uci.ics.hyracks.storage.am.common.ITreeIndexTestContext;
+import edu.uci.ics.hyracks.storage.am.common.IIndexTestContext;
 import edu.uci.ics.hyracks.storage.am.common.TreeIndexTestUtils;
 import edu.uci.ics.hyracks.storage.am.common.api.IPrimitiveValueProviderFactory;
 import edu.uci.ics.hyracks.storage.am.common.api.ITreeIndexFrame;
@@ -29,7 +29,7 @@
     private final int numKeys = 4;
 
     @SuppressWarnings("rawtypes")
-    private ITreeIndexTestContext<? extends CheckTuple> testCtx;
+    private IIndexTestContext<? extends CheckTuple> testCtx;
     private ITreeIndexFrame frame = null;
 
     @Override
diff --git a/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/rtree/utils/RTreeTestContext.java b/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/rtree/utils/RTreeTestContext.java
index 45d7d8c..8c1f0aa 100644
--- a/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/rtree/utils/RTreeTestContext.java
+++ b/hyracks-tests/hyracks-storage-am-rtree-test/src/test/java/edu/uci/ics/hyracks/storage/am/rtree/utils/RTreeTestContext.java
@@ -38,13 +38,13 @@
 
     @Override
     public int getKeyFieldCount() {
-        RTree rtree = (RTree) treeIndex;
+        RTree rtree = (RTree) index;
         return rtree.getComparatorFactories().length;
     }
 
     @Override
     public IBinaryComparatorFactory[] getComparatorFactories() {
-        RTree rtree = (RTree) treeIndex;
+        RTree rtree = (RTree) index;
         return rtree.getComparatorFactories();
     }