diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/algebra/operators/physical/InvertedIndexPOperator.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/algebra/operators/physical/InvertedIndexPOperator.java
index 6d21b27..49ca5ba 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/algebra/operators/physical/InvertedIndexPOperator.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/algebra/operators/physical/InvertedIndexPOperator.java
@@ -19,6 +19,7 @@
 import edu.uci.ics.asterix.om.types.ARecordType;
 import edu.uci.ics.asterix.om.types.ATypeTag;
 import edu.uci.ics.asterix.om.types.IAType;
+import edu.uci.ics.asterix.om.util.NonTaggedFormatUtil;
 import edu.uci.ics.asterix.optimizer.rules.am.InvertedIndexAccessMethod;
 import edu.uci.ics.asterix.optimizer.rules.am.InvertedIndexAccessMethod.SearchModifierType;
 import edu.uci.ics.asterix.optimizer.rules.am.InvertedIndexJobGenParams;
@@ -159,9 +160,8 @@
             ITypeTraits[] tokenTypeTraits = new ITypeTraits[numTokenKeys];
             IBinaryComparatorFactory[] tokenComparatorFactories = new IBinaryComparatorFactory[numTokenKeys];
             for (int i = 0; i < numSecondaryKeys; i++) {
-                tokenComparatorFactories[i] = InvertedIndexAccessMethod
-                        .getTokenBinaryComparatorFactory(secondaryKeyType);
-                tokenTypeTraits[i] = InvertedIndexAccessMethod.getTokenTypeTrait(secondaryKeyType);
+                tokenComparatorFactories[i] = NonTaggedFormatUtil.getTokenBinaryComparatorFactory(secondaryKeyType);
+                tokenTypeTraits[i] = NonTaggedFormatUtil.getTokenTypeTrait(secondaryKeyType);
             }
             if (isPartitioned) {
                 // The partitioning field is hardcoded to be a short *without* an Asterix type tag.
diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/IntroduceSecondaryIndexInsertDeleteRule.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/IntroduceSecondaryIndexInsertDeleteRule.java
index 3310f4d..fed591d 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/IntroduceSecondaryIndexInsertDeleteRule.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/IntroduceSecondaryIndexInsertDeleteRule.java
@@ -146,7 +146,10 @@
             project.getInputs().add(new MutableObject<ILogicalOperator>(currentTop));
             context.computeAndSetTypeEnvironmentForOperator(project);
             context.computeAndSetTypeEnvironmentForOperator(assign);
-            if (index.getIndexType() == IndexType.BTREE) {
+            if (index.getIndexType() == IndexType.BTREE || index.getIndexType() == IndexType.WORD_INVIX
+                    || index.getIndexType() == IndexType.NGRAM_INVIX
+                    || index.getIndexType() == IndexType.FUZZY_WORD_INVIX
+                    || index.getIndexType() == IndexType.FUZZY_NGRAM_INVIX) {
                 for (LogicalVariable secondaryKeyVar : secondaryKeyVars) {
                     secondaryExpressions.add(new MutableObject<ILogicalExpression>(new VariableReferenceExpression(
                             secondaryKeyVar)));
diff --git a/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/am/InvertedIndexAccessMethod.java b/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/am/InvertedIndexAccessMethod.java
index d4d6b43..ff260f1 100644
--- a/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/am/InvertedIndexAccessMethod.java
+++ b/asterix-algebra/src/main/java/edu/uci/ics/asterix/optimizer/rules/am/InvertedIndexAccessMethod.java
@@ -12,9 +12,7 @@
 import edu.uci.ics.asterix.algebra.base.LogicalOperatorDeepCopyVisitor;
 import edu.uci.ics.asterix.aql.util.FunctionUtils;
 import edu.uci.ics.asterix.common.config.DatasetConfig.IndexType;
-import edu.uci.ics.asterix.formats.nontagged.AqlBinaryComparatorFactoryProvider;
 import edu.uci.ics.asterix.formats.nontagged.AqlBinaryTokenizerFactoryProvider;
-import edu.uci.ics.asterix.formats.nontagged.AqlTypeTraitProvider;
 import edu.uci.ics.asterix.metadata.entities.Dataset;
 import edu.uci.ics.asterix.metadata.entities.Index;
 import edu.uci.ics.asterix.om.base.AFloat;
@@ -25,11 +23,8 @@
 import edu.uci.ics.asterix.om.base.IAObject;
 import edu.uci.ics.asterix.om.constants.AsterixConstantValue;
 import edu.uci.ics.asterix.om.functions.AsterixBuiltinFunctions;
-import edu.uci.ics.asterix.om.types.AOrderedListType;
 import edu.uci.ics.asterix.om.types.ARecordType;
 import edu.uci.ics.asterix.om.types.ATypeTag;
-import edu.uci.ics.asterix.om.types.AUnorderedListType;
-import edu.uci.ics.asterix.om.types.AbstractCollectionType;
 import edu.uci.ics.asterix.om.types.IAType;
 import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
 import edu.uci.ics.hyracks.algebricks.common.utils.Triple;
@@ -57,8 +52,6 @@
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnionAllOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnnestMapOperator;
 import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.visitors.VariableUtilities;
-import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
-import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
 import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.api.IInvertedIndexSearchModifierFactory;
 import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.search.ConjunctiveSearchModifierFactory;
 import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.search.EditDistanceSearchModifierFactory;
@@ -519,37 +512,37 @@
             joinInputSubTreeVarMap.put(optFuncExpr.getLogicalVar(i), context.newVar());
             newProbeSubTreeVarMap.put(optFuncExpr.getLogicalVar(i), optFuncExpr.getLogicalVar(i));
         }
-        for (int i = 0; i < originalSubTreePKs.size(); i++) {            
+        for (int i = 0; i < originalSubTreePKs.size(); i++) {
             LogicalVariable newPKVar = context.newVar();
             surrogateSubTreePKs.add(newPKVar);
             joinInputSubTreeVarMap.put(originalSubTreePKs.get(i), newPKVar);
             newProbeSubTreeVarMap.put(originalSubTreePKs.get(i), originalSubTreePKs.get(i));
         }
-        
+
         // Create first copy.
         Counter firstCounter = new Counter(context.getVarCounter());
         LogicalOperatorDeepCopyVisitor firstDeepCopyVisitor = new LogicalOperatorDeepCopyVisitor(firstCounter,
                 newProbeSubTreeVarMap);
         ILogicalOperator newProbeSubTree = firstDeepCopyVisitor.deepCopy(probeSubTree.root, null);
         inferTypes(newProbeSubTree, context);
-        Mutable<ILogicalOperator> newProbeSubTreeRootRef = new MutableObject<ILogicalOperator>(newProbeSubTree);        
+        Mutable<ILogicalOperator> newProbeSubTreeRootRef = new MutableObject<ILogicalOperator>(newProbeSubTree);
         context.setVarCounter(firstCounter.get());
         // Create second copy.
         Counter secondCounter = new Counter(context.getVarCounter());
         LogicalOperatorDeepCopyVisitor secondDeepCopyVisitor = new LogicalOperatorDeepCopyVisitor(secondCounter,
-                joinInputSubTreeVarMap);        
+                joinInputSubTreeVarMap);
         ILogicalOperator joinInputSubTree = secondDeepCopyVisitor.deepCopy(probeSubTree.root, null);
         inferTypes(joinInputSubTree, context);
         probeSubTree.rootRef.setValue(joinInputSubTree);
         context.setVarCounter(secondCounter.get());
-        
+
         // Remember the original probe subtree reference so we can return it.
         Mutable<ILogicalOperator> originalProbeSubTreeRootRef = probeSubTree.rootRef;
 
         // Replace the original probe subtree with its copy.
         Dataset origDataset = probeSubTree.dataset;
         ARecordType origRecordType = probeSubTree.recordType;
-        probeSubTree.initFromSubTree(newProbeSubTreeRootRef);        
+        probeSubTree.initFromSubTree(newProbeSubTreeRootRef);
         probeSubTree.dataset = origDataset;
         probeSubTree.recordType = origRecordType;
 
@@ -571,7 +564,7 @@
         for (int i = 0; i < numPKVars; i++) {
             List<Mutable<ILogicalExpression>> args = new ArrayList<Mutable<ILogicalExpression>>();
             args.add(new MutableObject<ILogicalExpression>(new VariableReferenceExpression(surrogateSubTreePKs.get(i))));
-            args.add(new MutableObject<ILogicalExpression>(new VariableReferenceExpression(originalSubTreePKs.get(i))));                   
+            args.add(new MutableObject<ILogicalExpression>(new VariableReferenceExpression(originalSubTreePKs.get(i))));
             ILogicalExpression eqFunc = new ScalarFunctionCallExpression(
                     FunctionUtils.getFunctionInfo(AlgebricksBuiltinFunctions.EQ), args);
             eqExprs.add(new MutableObject<ILogicalExpression>(eqFunc));
@@ -839,42 +832,6 @@
         return false;
     }
 
-    public static IBinaryComparatorFactory getTokenBinaryComparatorFactory(IAType keyType) throws AlgebricksException {
-        IAType type = keyType;
-        ATypeTag typeTag = keyType.getTypeTag();
-        // Extract item type from list.
-        if (typeTag == ATypeTag.UNORDEREDLIST || typeTag == ATypeTag.ORDEREDLIST) {
-            AbstractCollectionType listType = (AbstractCollectionType) keyType;
-            if (!listType.isTyped()) {
-                throw new AlgebricksException("Cannot build an inverted index on untyped lists.)");
-            }
-            type = listType.getItemType();
-        }
-        // Ignore case for string types.
-        return AqlBinaryComparatorFactoryProvider.INSTANCE.getBinaryComparatorFactory(type, true, true);
-    }
-
-    public static ITypeTraits getTokenTypeTrait(IAType keyType) throws AlgebricksException {
-        IAType type = keyType;
-        ATypeTag typeTag = keyType.getTypeTag();
-        // Extract item type from list.
-        if (typeTag == ATypeTag.UNORDEREDLIST) {
-            AUnorderedListType ulistType = (AUnorderedListType) keyType;
-            if (!ulistType.isTyped()) {
-                throw new AlgebricksException("Cannot build an inverted index on untyped lists.)");
-            }
-            type = ulistType.getItemType();
-        }
-        if (typeTag == ATypeTag.ORDEREDLIST) {
-            AOrderedListType olistType = (AOrderedListType) keyType;
-            if (!olistType.isTyped()) {
-                throw new AlgebricksException("Cannot build an inverted index on untyped lists.)");
-            }
-            type = olistType.getItemType();
-        }
-        return AqlTypeTraitProvider.INSTANCE.getTypeTrait(type);
-    }
-
     public static IBinaryTokenizerFactory getBinaryTokenizerFactory(SearchModifierType searchModifierType,
             ATypeTag searchKeyType, Index index) throws AlgebricksException {
         switch (index.getIndexType()) {
@@ -895,24 +852,6 @@
         }
     }
 
-    public static IBinaryTokenizerFactory getBinaryTokenizerFactory(ATypeTag keyType, IndexType indexType,
-            int gramLength) throws AlgebricksException {
-        switch (indexType) {
-            case WORD_INVIX:
-            case FUZZY_WORD_INVIX: {
-                return AqlBinaryTokenizerFactoryProvider.INSTANCE.getWordTokenizerFactory(keyType, false);
-            }
-            case NGRAM_INVIX:
-            case FUZZY_NGRAM_INVIX: {
-                return AqlBinaryTokenizerFactoryProvider.INSTANCE.getNGramTokenizerFactory(keyType, gramLength, true,
-                        false);
-            }
-            default: {
-                throw new AlgebricksException("Tokenizer not applicable to index type '" + indexType + "'.");
-            }
-        }
-    }
-
     public static IInvertedIndexSearchModifierFactory getSearchModifierFactory(SearchModifierType searchModifierType,
             IAObject simThresh, Index index) throws AlgebricksException {
         switch (searchModifierType) {
diff --git a/asterix-app/data/dblp-small/dblp-small-nulls.adm b/asterix-app/data/dblp-small/dblp-small-nulls.adm
new file mode 100644
index 0000000..d943f54
--- /dev/null
+++ b/asterix-app/data/dblp-small/dblp-small-nulls.adm
@@ -0,0 +1,100 @@
+{ "id": 2, "dblpid": "books/acm/kim95/Blakeley95", "title": "OQL[C++]  Extending C++ with an Object Query Capability.", "authors": "José A. Blakeley", "misc": "2002-01-03 69-88 Modern Database Systems db/books/collections/kim95.html#Blakeley95 1995" }
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
+{ "id": 6, "dblpid": "books/acm/kim95/DittrichD95", "title": "Where Object-Oriented DBMSs Should Do Better  A Critique Based on Early Experiences.", "authors": "Angelika Kotz Dittrich Klaus R. Dittrich", "misc": "2002-01-03 238-254 1995 Modern Database Systems db/books/collections/kim95.html#DittrichD95" }
+{ "id": 8, "dblpid": "books/acm/kim95/Goodman95", "title": "An Object-Oriented DBMS War Story  Developing a Genome Mapping Database in C++.", "authors": "Nathan Goodman", "misc": "2002-01-03 216-237 1995 Modern Database Systems db/books/collections/kim95.html#Goodman95" }
+{ "id": 10, "dblpid": "books/acm/kim95/KelleyGKRG95", "title": "Schema Architecture of the UniSQL/M Multidatabase System", "authors": "William Kelley Sunit K. Gala Won Kim Tom C. Reyes Bruce Graham", "misc": "2004-03-08 Modern Database Systems books/acm/Kim95 621-648 1995 db/books/collections/kim95.html#KelleyGKRG95" }
+{ "id": 12, "dblpid": "books/acm/kim95/Kim95", "authors": "Won Kim", "misc": "2002-01-03 5-17 1995 Modern Database Systems db/books/collections/kim95.html#Kim95" }
+{ "id": 14, "dblpid": "books/acm/kim95/Kim95b", "title": "Introduction to Part 2  Technology for Interoperating Legacy Databases.", "authors": "Won Kim", "misc": "2002-01-03 515-520 1995 Modern Database Systems db/books/collections/kim95.html#Kim95b" }
+{ "id": 16, "dblpid": "books/acm/kim95/KimG95", "authors": "Won Kim Jorge F. Garza", "misc": "2002-01-03 203-215 1995 Modern Database Systems db/books/collections/kim95.html#KimG95" }
+{ "id": 18, "dblpid": "books/acm/kim95/Kowalski95", "title": "The POSC Solution to Managing E&P Data.", "authors": "Vincent J. Kowalski", "misc": "2002-01-03 281-301 1995 Modern Database Systems db/books/collections/kim95.html#Kowalski95" }
+{ "id": 20, "dblpid": "books/acm/kim95/Lunt95", "title": "Authorization in Object-Oriented Databases.", "authors": "Teresa F. Lunt", "misc": "2002-01-03 130-145 1995 Modern Database Systems db/books/collections/kim95.html#Lunt95" }
+{ "id": 22, "dblpid": "books/acm/kim95/Motro95", "authors": "Amihai Motro", "misc": "2002-01-03 457-476 1995 Modern Database Systems db/books/collections/kim95.html#Motro95" }
+{ "id": 24, "dblpid": "books/acm/kim95/OzsuB95", "authors": "M. Tamer Özsu José A. Blakeley", "misc": "2002-01-03 146-174 1995 Modern Database Systems db/books/collections/kim95.html#OzsuB95" }
+{ "id": 26, "dblpid": "books/acm/kim95/Samet95", "title": "Spatial Data Structures.", "authors": "Hanan Samet", "misc": "2004-03-08 361-385 Modern Database Systems books/acm/Kim95 db/books/collections/kim95.html#Samet95 1995" }
+{ "id": 28, "dblpid": "books/acm/kim95/ShanADDK95", "title": "Pegasus  A Heterogeneous Information Management System.", "authors": "Ming-Chien Shan Rafi Ahmed Jim Davis Weimin Du William Kent", "misc": "2004-03-08 664-682 Modern Database Systems books/acm/Kim95 db/books/collections/kim95.html#ShanADDK95 1995" }
+{ "id": 30, "dblpid": "books/acm/kim95/SoleyK95", "title": "The OMG Object Model.", "authors": "Richard Mark Soley William Kent", "misc": "2002-01-03 18-41 1995 Modern Database Systems db/books/collections/kim95.html#SoleyK95" }
+{ "id": 32, "dblpid": "books/acm/kim95/Thompson95", "title": "The Changing Database Standards Landscape.", "authors": "Craig W. Thompson", "misc": "2002-01-03 302-317 1995 Modern Database Systems db/books/collections/kim95.html#Thompson95" }
+{ "id": 34, "dblpid": "books/acm/Kim95", "title": "Modern Database Systems  The Object Model, Interoperability, and Beyond.", "authors": "", "misc": "2004-03-08 Won Kim Modern Database Systems ACM Press and Addison-Wesley 1995 0-201-59098-0 db/books/collections/kim95.html" }
+{ "id": 36, "dblpid": "books/aw/kimL89/BjornerstedtH89", "title": "Version Control in an Object-Oriented Architecture.", "authors": "Anders Björnerstedt Christer Hulten", "misc": "2006-02-24 451-485 Object-Oriented Concepts, Databases, and Applications ACM Press and Addison-Wesley 1989 db/books/collections/kim89.html#BjornerstedtH89" }
+{ "id": 38, "dblpid": "books/aw/kimL89/CareyDRS89", "title": "Storage Management in EXODUS.", "authors": "Michael J. Carey David J. DeWitt Joel E. Richardson Eugene J. Shekita", "misc": "2002-01-03 341-369 Object-Oriented Concepts, Databases, and Applications ACM Press and Addison-Wesley 1989 db/books/collections/kim89.html#CareyDRS89" }
+{ "id": 40, "dblpid": "books/aw/kimL89/DiederichM89", "title": "Objects, Messages, and Rules in Database Design.", "authors": "Jim Diederich Jack Milton", "misc": "2002-01-03 177-197 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#DiederichM89" }
+{ "id": 42, "dblpid": "books/aw/kimL89/FishmanABCCDHHKLLMNRSW89", "title": "Overview of the Iris DBMS.", "authors": "Daniel H. Fishman Jurgen Annevelink David Beech E. C. Chow Tim Connors J. W. Davis Waqar Hasan C. G. Hoch William Kent S. Leichner Peter Lyngbæk Brom Mahbod Marie-Anne Neimat Tore Risch Ming-Chien Shan W. Kevin Wilkinson", "misc": "2002-01-03 219-250 Object-Oriented Concepts, Databases, and Applications ACM Press and Addison-Wesley 1989 db/books/collections/kim89.html#FishmanABCCDHHKLLMNRSW89" }
+{ "id": 44, "dblpid": "books/aw/kimL89/KimKD89", "title": "Indexing Techniques for Object-Oriented Databases.", "authors": "Won Kim Kyung-Chang Kim Alfred G. Dale", "misc": "2002-01-03 371-394 Object-Oriented Concepts, Databases, and Applications ACM Press and Addison-Wesley 1989 db/books/collections/kim89.html#KimKD89" }
+{ "id": 46, "dblpid": "books/aw/kimL89/Maier89", "title": "Making Database Systems Fast Enough for CAD Applications.", "authors": "David Maier", "misc": "2002-01-03 573-582 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#Maier89" }
+{ "id": 48, "dblpid": "books/aw/kimL89/Moon89", "title": "The Common List Object-Oriented Programming Language Standard.", "authors": "David A. Moon", "misc": "2002-01-03 49-78 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#Moon89" }
+{ "id": 50, "dblpid": "books/aw/kimL89/Nierstrasz89", "title": "A Survey of Object-Oriented Concepts.", "authors": "Oscar Nierstrasz", "misc": "2002-01-03 3-21 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#Nierstrasz89" }
+{ "id": 52, "dblpid": "books/aw/kimL89/Russinoff89", "title": "Proteus  A Frame-Based Nonmonotonic Inference System.", "authors": "David M. Russinoff", "misc": "2002-01-03 127-150 Object-Oriented Concepts, Databases, and Applications ACM Press and Addison-Wesley 1989 db/books/collections/kim89.html#Russinoff89" }
+{ "id": 54, "dblpid": "books/aw/kimL89/SteinLU89", "authors": "Lynn Andrea Stein Henry Lieberman David Ungar", "misc": "2002-01-03 31-48 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#SteinLU89" }
+{ "id": 56, "dblpid": "books/aw/kimL89/TomlinsonS89", "title": "Concurrent Object-Oriented Programming Languages.", "authors": "Chris Tomlinson Mark Scheevel", "misc": "2002-01-03 79-124 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#TomlinsonS89" }
+{ "id": 58, "dblpid": "books/aw/kimL89/Wand89", "title": "A Proposal for a Formal Model of Objects.", "authors": "Yair Wand", "misc": "2002-01-03 537-559 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#Wand89" }
+{ "id": 60, "dblpid": "books/aw/stonebraker86/RoweS86", "authors": "Lawrence A. Rowe Michael Stonebraker", "misc": "2002-01-03 63-82 1986 The INGRES Papers db/books/collections/Stonebraker86.html#RoweS86 db/books/collections/Stonebraker86/RoweS86.html ingres/P063.pdf" }
+{ "id": 62, "dblpid": "books/aw/stonebraker86/Stonebraker86a", "title": "Supporting Studies on Relational Systems (Introduction to Section 2).", "authors": "Michael Stonebraker", "misc": "2002-01-03 83-85 1986 The INGRES Papers db/books/collections/Stonebraker86.html#Stonebraker86a db/books/collections/Stonebraker86/Stonebraker86a.html ingres/P083.pdf" }
+{ "id": 64, "dblpid": "books/aw/stonebraker86/Stonebraker86c", "authors": "Michael Stonebraker", "misc": "2002-01-03 187-196 1986 The INGRES Papers db/books/collections/Stonebraker86.html#Stonebraker86c db/books/collections/Stonebraker86/Stonebraker86c.html ingres/P187.pdf" }
+{ "id": 66, "dblpid": "books/aw/stonebraker86/Stonebraker86e", "title": "Extended Semantics for the Relational Model (Introduction to Section 5).", "authors": "Michael Stonebraker", "misc": "2002-01-03 313-316 1986 The INGRES Papers db/books/collections/Stonebraker86.html#Stonebraker86e db/books/collections/Stonebraker86/Stonebraker86e.html ingres/P313.pdf" }
+{ "id": 68, "dblpid": "books/aw/stonebraker86/X86", "title": "Title, Preface, Contents.", "authors": "", "misc": "2002-01-03 1986 The INGRES Papers db/books/collections/Stonebraker86.html#X86 db/books/collections/Stonebraker86/X86.html ingres/frontmatter.pdf" }
+{ "id": 70, "dblpid": "books/aw/Knuth86a", "title": "TeX  The Program", "authors": "Donald E. Knuth", "misc": "2002-01-03 Addison-Wesley 1986 0-201-13437-3" }
+{ "id": 72, "dblpid": "books/aw/Lamport86", "title": "LaTeX  User's Guide & Reference Manual", "authors": "Leslie Lamport", "misc": "2002-01-03 Addison-Wesley 1986 0-201-15790-X" }
+{ "id": 74, "dblpid": "books/aw/Lamport2002", "title": "Specifying Systems, The TLA+ Language and Tools for Hardware and Software Engineers", "authors": "Leslie Lamport", "misc": "2005-07-28 Addison-Wesley 2002 0-3211-4306-X http //research.microsoft.com/users/lamport/tla/book.html" }
+{ "id": 76, "dblpid": "books/aw/LewisBK01", "title": "Databases and Transaction Processing  An Application-Oriented Approach", "authors": "Philip M. Lewis Arthur J. Bernstein Michael Kifer", "misc": "2002-01-03 Addison-Wesley 2001 0-201-70872-8" }
+{ "id": 78, "dblpid": "books/aw/LindholmY97", "title": "The Java Virtual Machine Specification", "authors": "Tim Lindholm Frank Yellin", "misc": "2002-01-28 Addison-Wesley 1997 0-201-63452-X" }
+{ "id": 80, "dblpid": "books/aw/Sedgewick83", "title": "Algorithms", "authors": "Robert Sedgewick", "misc": "2002-01-03 Addison-Wesley 1983 0-201-06672-6" }
+{ "id": 82, "dblpid": "conf/focs/AspnesW92", "title": "Randomized Consensus in Expected O(n log ^2 n) Operations Per Processor", "authors": "James Aspnes Orli Waarts", "misc": "2006-04-25 137-146 conf/focs/FOCS33 1992 FOCS db/conf/focs/focs92.html#AspnesW92" }
+{ "id": 84, "dblpid": "conf/stoc/Bloniarz80", "title": "A Shortest-Path Algorithm with Expected Time O(n^2 log n log ^* n)", "authors": "Peter A. Bloniarz", "misc": "2006-04-25 378-384 conf/stoc/STOC12 1980 STOC db/conf/stoc/stoc80.html#Bloniarz80" }
+{ "id": 86, "dblpid": "conf/focs/Megiddo82", "title": "Linear-Time Algorithms for Linear Programming in R^3 and Related Problems", "authors": "Nimrod Megiddo", "misc": "2006-04-25 329-338 conf/focs/FOCS23 1982 FOCS db/conf/focs/focs82.html#Megiddo82" }
+{ "id": 88, "dblpid": "conf/focs/MoffatT85", "title": "An All Pairs Shortest Path Algorithm with Expected Running Time O(n^2 log n)", "authors": "Alistair Moffat Tadao Takaoka", "misc": "2006-04-25 101-105 conf/focs/FOCS26 1985 FOCS db/conf/focs/focs85.html#MoffatT85" }
+{ "id": 90, "dblpid": "conf/hicss/SchonfeldL99", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases ¾ Visual Search Engine.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-01-03 1999 HICSS http //computer.org/proceedings/hicss/0001/00013/00013006abs.htm db/conf/hicss/hicss1999-3.html#SchonfeldL99" }
+{ "id": 92, "dblpid": "conf/stacs/Laue08", "title": "Geometric Set Cover and Hitting Sets for Polytopes in R³.", "authors": "Sören Laue", "misc": "2008-03-04 2008 STACS 479-490 http //drops.dagstuhl.de/opus/volltexte/2008/1367 conf/stacs/2008 db/conf/stacs/stacs2008.html#Laue08" }
+{ "id": 94, "dblpid": "conf/awoc/IbarraJRC88", "title": "On Some Languages in NC.", "authors": "Oscar H. Ibarra Tao Jiang Bala Ravikumar Jik H. Chang", "misc": "2002-08-06 64-73 1988 conf/awoc/1988 AWOC db/conf/awoc/awoc88.html#IbarraJRC88" }
+{ "id": 96, "dblpid": "conf/focs/GalilHLSW82", "title": "An O(n^3 log n) Deterministic and an O(n^3) Probabilistic Isomorphism Test for Trivalent Graphs", "authors": "Zvi Galil Christoph M. Hoffmann Eugene M. Luks Claus-Peter Schnorr Andreas Weber", "misc": "2006-04-25 118-125 conf/focs/FOCS23 1982 FOCS db/conf/focs/focs82.html#GalilHLSW82" }
+{ "id": 98, "dblpid": "conf/focs/GalilT86", "title": "An O(n^2 (m + n log n) log n) Min-Cost Flow Algorithm", "authors": "Zvi Galil Éva Tardos", "misc": "2006-04-25 1-9 conf/focs/FOCS27 1986 FOCS db/conf/focs/focs86.html#GalilT86" }
+{ "id": 100, "dblpid": "series/synthesis/2009Brozos", "title": "The Geometry of Walker Manifolds", "authors": "Miguel Brozos-Vázquez Eduardo García-Río Peter Gilkey Stana Nikcevic Rámon Vázquez-Lorenzo", "misc": "2009-09-06 The Geometry of Walker Manifolds http //dx.doi.org/10.2200/S00197ED1V01Y200906MAS005 http //dx.doi.org/10.2200/S00197ED1V01Y200906MAS005 2009 Synthesis Lectures on Mathematics & Statistics Morgan & Claypool Publishers" }
+{ "id": 1, "dblpid": "books/acm/kim95/AnnevelinkACFHK95", "title": "Object SQL - A Language for the Design and Implementation of Object Databases.", "authors": "Jurgen Annevelink Rafiul Ahad Amelia Carlson Daniel H. Fishman Michael L. Heytens William Kent", "misc": "2002-01-03 42-68 1995 Modern Database Systems db/books/collections/kim95.html#AnnevelinkACFHK95" }
+{ "id": 3, "dblpid": "books/acm/kim95/BreitbartGS95", "title": "Transaction Management in Multidatabase Systems.", "authors": "Yuri Breitbart Hector Garcia-Molina Abraham Silberschatz", "misc": "2004-03-08 573-591 Modern Database Systems books/acm/Kim95 db/books/collections/kim95.html#BreitbartGS95 1995" }
+{ "id": 5, "dblpid": "books/acm/kim95/DayalHW95", "title": "Active Database Systems.", "authors": "Umeshwar Dayal Eric N. Hanson Jennifer Widom", "misc": "2002-01-03 434-456 1995 Modern Database Systems db/books/collections/kim95.html#DayalHW95" }
+{ "id": 7, "dblpid": "books/acm/kim95/Garcia-MolinaH95", "title": "Distributed Databases.", "authors": "Hector Garcia-Molina Meichun Hsu", "misc": "2002-01-03 477-493 1995 Modern Database Systems db/books/collections/kim95.html#Garcia-MolinaH95" }
+{ "id": 9, "dblpid": "books/acm/kim95/Kaiser95", "title": "Cooperative Transactions for Multiuser Environments.", "authors": "Gail E. Kaiser", "misc": "2002-01-03 409-433 1995 Modern Database Systems db/books/collections/kim95.html#Kaiser95" }
+{ "id": 11, "dblpid": "books/acm/kim95/KemperM95", "title": "Physical Object Management.", "authors": "Alfons Kemper Guido Moerkotte", "misc": "2002-01-03 175-202 1995 Modern Database Systems db/books/collections/kim95.html#KemperM95" }
+{ "id": 13, "dblpid": "books/acm/kim95/Kim95a", "title": "Object-Oriented Database Systems  Promises, Reality, and Future.", "authors": "Won Kim", "misc": "2002-01-03 255-280 1995 Modern Database Systems db/books/collections/kim95.html#Kim95a" }
+{ "id": 15, "dblpid": "books/acm/kim95/KimCGS95", "title": "On Resolving Schematic Heterogeneity in Multidatabase Systems.", "authors": "Won Kim Injun Choi Sunit K. Gala Mark Scheevel", "misc": "2002-01-03 521-550 1995 Modern Database Systems db/books/collections/kim95.html#KimCGS95" }
+{ "id": 17, "dblpid": "books/acm/kim95/KimK95", "title": "On View Support in Object-Oriented Databases Systems.", "authors": "Won Kim William Kelley", "misc": "2002-01-03 108-129 1995 Modern Database Systems db/books/collections/kim95.html#KimK95" }
+{ "id": 19, "dblpid": "books/acm/kim95/KriegerA95", "title": "C++ Bindings to an Object Database.", "authors": "David Krieger Tim Andrews", "misc": "2002-01-03 89-107 1995 Modern Database Systems db/books/collections/kim95.html#KriegerA95" }
+{ "id": 21, "dblpid": "books/acm/kim95/MengY95", "title": "Query Processing in Multidatabase Systems.", "authors": "Weiyi Meng Clement T. Yu", "misc": "2002-01-03 551-572 1995 Modern Database Systems db/books/collections/kim95.html#MengY95" }
+{ "id": 23, "dblpid": "books/acm/kim95/Omiecinski95", "title": "Parallel Relational Database Systems.", "authors": "Edward Omiecinski", "misc": "2002-01-03 494-512 1995 Modern Database Systems db/books/collections/kim95.html#Omiecinski95" }
+{ "id": 25, "dblpid": "books/acm/kim95/RusinkiewiczS95", "title": "Specification and Execution of Transactional Workflows.", "authors": "Marek Rusinkiewicz Amit P. Sheth", "misc": "2004-03-08 592-620 Modern Database Systems books/acm/Kim95 db/books/collections/kim95.html#RusinkiewiczS95 1995" }
+{ "id": 27, "dblpid": "books/acm/kim95/SametA95", "title": "Spatial Data Models and Query Processing.", "authors": "Hanan Samet Walid G. Aref", "misc": "2002-01-03 338-360 1995 Modern Database Systems db/books/collections/kim95.html#SametA95" }
+{ "id": 29, "dblpid": "books/acm/kim95/Snodgrass95", "title": "Temporal Object-Oriented Databases  A Critical Comparison.", "authors": "Richard T. Snodgrass", "misc": "2002-01-03 386-408 1995 Modern Database Systems db/books/collections/kim95.html#Snodgrass95" }
+{ "id": 31, "dblpid": "books/acm/kim95/Stout95", "title": "EDA/SQL.", "authors": "Ralph L. Stout", "misc": "2004-03-08 649-663 Modern Database Systems books/acm/Kim95 db/books/collections/kim95.html#Stout95 1995" }
+{ "id": 33, "dblpid": "books/acm/kim95/BreitbartR95", "title": "Overview of the ADDS System.", "authors": "Yuri Breitbart Tom C. Reyes", "misc": "2009-06-12 683-701 Modern Database Systems books/acm/Kim95 db/books/collections/kim95.html#BreitbartR95 1995" }
+{ "id": 35, "dblpid": "books/ap/MarshallO79", "title": "Inequalities  Theory of Majorization and Its Application.", "authors": "Albert W. Marshall Ingram Olkin", "misc": "2002-01-03 Academic Press 1979 0-12-473750-1" }
+{ "id": 37, "dblpid": "books/aw/kimL89/BretlMOPSSWW89", "title": "The GemStone Data Management System.", "authors": "Robert Bretl David Maier Allen Otis D. Jason Penney Bruce Schuchardt Jacob Stein E. Harold Williams Monty Williams", "misc": "2002-01-03 283-308 Object-Oriented Concepts, Databases, and Applications ACM Press and Addison-Wesley 1989 db/books/collections/kim89.html#BretlMOPSSWW89" }
+{ "id": 39, "dblpid": "books/aw/kimL89/Decouchant89", "title": "A Distributed Object Manager for the Smalltalk-80 System.", "authors": "Dominique Decouchant", "misc": "2002-01-03 487-520 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#Decouchant89" }
+{ "id": 41, "dblpid": "books/aw/kimL89/EllisG89", "title": "Active Objects  Ealities and Possibilities.", "authors": "Clarence A. Ellis Simon J. Gibbs", "misc": "2002-01-03 561-572 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#EllisG89" }
+{ "id": 43, "dblpid": "books/aw/kimL89/KimBCGW89", "title": "Features of the ORION Object-Oriented Database System.", "authors": "Won Kim Nat Ballou Hong-Tai Chou Jorge F. Garza Darrell Woelk", "misc": "2002-01-03 251-282 Object-Oriented Concepts, Databases, and Applications ACM Press and Addison-Wesley 1989 db/books/collections/kim89.html#KimBCGW89" }
+{ "id": 45, "dblpid": "books/aw/kimL89/King89", "title": "My Cat Is Object-Oriented.", "authors": "Roger King", "misc": "2002-01-03 23-30 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#King89" }
+{ "id": 47, "dblpid": "books/aw/kimL89/MellenderRS89", "authors": "Fred Mellender Steve Riegel Andrew Straw", "misc": "2002-01-03 423-450 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#MellenderRS89" }
+{ "id": 49, "dblpid": "books/aw/kimL89/Moss89", "title": "Object Orientation as Catalyst for Language-Database Inegration.", "authors": "J. Eliot B. Moss", "misc": "2002-01-03 583-592 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#Moss89" }
+{ "id": 51, "dblpid": "books/aw/kimL89/NierstraszT89", "title": "Integrated Office Systems.", "authors": "Oscar Nierstrasz Dennis Tsichritzis", "misc": "2002-01-03 199-215 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#NierstraszT89" }
+{ "id": 53, "dblpid": "books/aw/kimL89/SkarraZ89", "title": "Concurrency Control and Object-Oriented Databases.", "authors": "Andrea H. Skarra Stanley B. Zdonik", "misc": "2002-01-03 395-421 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#SkarraZ89" }
+{ "id": 55, "dblpid": "books/aw/kimL89/TarltonT89", "title": "Pogo  A Declarative Representation System for Graphics.", "authors": "Mark A. Tarlton P. Nong Tarlton", "misc": "2002-01-03 151-176 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#TarltonT89" }
+{ "id": 57, "dblpid": "books/aw/kimL89/TsichritzisN89", "title": "Directions in Object-Oriented Research.", "authors": "Dennis Tsichritzis Oscar Nierstrasz", "misc": "2002-01-03 523-536 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#TsichritzisN89" }
+{ "id": 59, "dblpid": "books/aw/kimL89/WeiserL89", "title": "OZ+  An Object-Oriented Database System.", "authors": "Stephen P. Weiser Frederick H. Lochovsky", "misc": "2002-01-03 309-337 1989 Object-Oriented Concepts, Databases, and Applications db/books/collections/kim89.html#WeiserL89" }
+{ "id": 61, "dblpid": "books/aw/stonebraker86/Stonebraker86", "title": "Design of Relational Systems (Introduction to Section 1).", "authors": "Michael Stonebraker", "misc": "2002-01-03 1-3 1986 The INGRES Papers db/books/collections/Stonebraker86.html#Stonebraker86 db/books/collections/Stonebraker86/Stonebraker86.html ingres/P001.pdf" }
+{ "id": 63, "dblpid": "books/aw/stonebraker86/Stonebraker86b", "title": "Distributed Database Systems (Introduction to Section 3).", "authors": "Michael Stonebraker", "misc": "2002-01-03 183-186 1986 The INGRES Papers db/books/collections/Stonebraker86.html#Stonebraker86b db/books/collections/Stonebraker86/Stonebraker86b.html ingres/P183.pdf" }
+{ "id": 65, "dblpid": "books/aw/stonebraker86/Stonebraker86d", "title": "User Interfaces for Database Systems (Introduction to Section 4).", "authors": "Michael Stonebraker", "misc": "2002-01-03 243-245 1986 The INGRES Papers db/books/collections/Stonebraker86.html#Stonebraker86d db/books/collections/Stonebraker86/Stonebraker86d.html ingres/P243.pdf" }
+{ "id": 67, "dblpid": "books/aw/stonebraker86/Stonebraker86f", "authors": "Michael Stonebraker", "misc": "2002-01-03 393-394 1986 The INGRES Papers db/books/collections/Stonebraker86.html#Stonebraker86f db/books/collections/Stonebraker86/Stonebraker86f.html ingres/P393.pdf" }
+{ "id": 69, "dblpid": "books/aw/stonebraker86/X86a", "title": "References.", "authors": "", "misc": "2002-01-03 429-444 1986 The INGRES Papers db/books/collections/Stonebraker86.html#X86a db/books/collections/Stonebraker86/X86a.html ingres/P429.pdf" }
+{ "id": 71, "dblpid": "books/aw/AbiteboulHV95", "title": "Foundations of Databases.", "authors": "Serge Abiteboul Richard Hull Victor Vianu", "misc": "2002-01-03 Addison-Wesley 1995 0-201-53771-0 AHV/Toc.pdf ... ... journals/tods/AstrahanBCEGGKLMMPTWW76 books/bc/AtzeniA93 journals/tcs/AtzeniABM82 journals/jcss/AbiteboulB86 journals/csur/AtkinsonB87 conf/pods/AtzeniB87 journals/vldb/AbiteboulB95 conf/sigmod/AbiteboulB91 conf/dood/AtkinsonBDDMZ89 conf/vldb/AlbanoBGO93 ... conf/icdt/Abiteboul88 journals/ipl/Abiteboul89 conf/ds/Abrial74 journals/tods/AhoBU79 books/mk/minker88/AptBW88 conf/vldb/AroraC78 conf/stoc/AfratiC89 journals/tods/AlbanoCO85 conf/pods/AfratiCY91 conf/pods/AusielloDM85 conf/vldb/AbiteboulG85 journals/jacm/AjtaiG87 conf/focs/AjtaiG89 journals/tods/AbiteboulG91 ... ... journals/tods/AbiteboulH87 conf/sigmod/AbiteboulH88 ... conf/sigmod/AbiteboulK89 journals/tcs/AbiteboulKG91 journals/jcss/AbiteboulKRW95 conf/sigmod/AbiteboulLUW93 conf/pods/AtzeniP82 conf/pods/AfratiP87 conf/pods/AptP87 conf/wg/AndriesP91 conf/pods/AfratiPPRSU86 books/el/leeuwen90/Apt90 conf/ifip/Armstrong74 journals/siamcomp/AhoSSU81 journals/tods/AhoSU79 journals/siamcomp/AhoSU79 conf/pods/AbiteboulSV90 journals/is/AtzeniT93 conf/popl/AhoU79 conf/pods/AbiteboulV87 conf/jcdkb/AbiteboulV88 journals/jacm/AbiteboulV88 conf/pods/AbiteboulV88 journals/jacm/AbiteboulV89 journals/jcss/AbiteboulV90 journals/jcss/AbiteboulV91 conf/stoc/AbiteboulV91 journals/amai/AbiteboulV91 journals/jcss/AbiteboulV95 journals/jacm/AptE82 conf/coco/AbiteboulVV92 conf/iclp/AptB88 conf/oopsla/BobrowKKMSZ86 journals/tse/BatoryBGSTTW88 conf/mfcs/Bancilhon78 ... conf/db-workshops/Bancilhon85 books/el/leeuwen90/Barendregt90 ... journals/tods/BeeriB79 books/el/leeuwen90/BerstelB90 conf/icdt/BeneventanoB92 conf/vldb/BernsteinBC80 conf/vldb/BeeriBG78 conf/sigmod/BorgidaBMR89 journals/tods/BunemanC79 journals/jacm/BernsteinC81 conf/dbpl/BancilhonCD89 books/bc/tanselCGSS93/BaudinetCW93 conf/sigmod/BiskupDB79 journals/jacm/BeeriDFS84 books/mk/BancilhonDK92 conf/edbt/BryDM88 conf/pods/BunemanDW88 journals/jcss/BunemanDW91 journals/tods/Beeri80 journals/dke/Beeri90 ... journals/tods/Bernstein76 conf/lics/BidoitF87 journals/iandc/BidoitF91 conf/sigmod/BeeriFH77 conf/stoc/BeeriFMMUY81 journals/jacm/BeeriFMY83 journals/tods/BunemanFN82 journals/siamcomp/BernsteinG81 journals/iandc/BlassGK85 conf/ijcai/BrachmanGL85 journals/tods/BernsteinGWRR81 books/aw/BernsteinHG87 ... journals/tcs/Bidoit91 journals/tcs/Biskup80 conf/adbt/Biskup79 journals/tods/Biskup83 journals/tcs/BunemanJO91 journals/tods/BeeriK86 conf/pods/BeeriKBR87 conf/icdt/BidoitL90 journals/csur/BatiniL86 conf/sigmod/BlakeleyLT86 conf/vldb/BeeriM91 conf/sigmod/BlakeleyMG93 journals/siamcomp/BeeriMSU81 conf/pods/BancilhonMSU86 conf/pods/BeeriNRST87 journals/software/Borgida85 conf/icalp/BraP83 conf/fgcs/BalbinMR88 ... conf/pods/BeeriR87 journals/jlp/BalbinR87 conf/sigmod/BancilhonR86 books/mk/minker88/BancilhonR88 journals/jlp/BeeriR91 conf/vldb/BancilhonRS82 conf/pods/BeeriRSS92 conf/dood/Bry89 journals/tods/BancilhonS81 journals/cogsci/BrachmanS85 journals/tods/BergamaschiS92 conf/sigmod/BernsteinST75 conf/dbpl/TannenBN91 conf/icdt/TannenBW92 ... journals/jacm/BeeriV84 conf/icalp/BeeriV81 conf/adbt/BeeriV79 journals/siamcomp/BeeriV84 journals/iandc/BeeriV84 journals/jacm/BeeriV84 journals/tcs/BeeriV85 journals/ibmrd/ChamberlinAEGLMRW76 ... journals/iandc/Cardelli88 books/mk/Cattell94 conf/sigmod/CacaceCCTZ90 conf/vldb/CastilhoCF82 conf/adbt/CasanovaF82 conf/focs/CaiFI89 journals/jcss/CasanovaFP84 conf/stoc/CosmadakisGKV88 conf/dood/CorciuloGP93 books/sp/CeriGT90 conf/focs/ChandraH80 journals/jcss/ChandraH80 journals/jcss/ChandraH82 journals/jlp/ChandraH85 conf/popl/Chandra81 conf/adbt/Chang79 conf/pods/Chandra88 ... journals/tods/Chen76 conf/ride/ChenHM94 conf/icde/Chomicki92 conf/pods/Chomicki92 ... ... ... conf/stoc/CosmadakisK85 journals/acr/CosmadakisK86 ... journals/jcss/CosmadakisKS86 journals/jacm/CosmadakisKV90 ... conf/pods/CalvaneseL94 conf/adbt/Clark77 conf/stoc/ChandraLM81 conf/stoc/ChandraM77 conf/pods/ConsensM90 conf/sigmod/ConsensM93 conf/icdt/ConsensM90 journals/cacm/Codd70 conf/sigmod/Codd71a persons/Codd71a persons/Codd72 conf/ifip/Codd74 ... conf/sigmod/Codd79 journals/cacm/Codd82 ... conf/sigmod/Cohen89 journals/cacm/Cohen90 ... journals/jcss/Cook74 conf/pods/Cosmadakis83 conf/focs/Cosmadakis87 books/el/leeuwen90/Courcelle90a journals/jacm/CosmadakisP84 conf/edbt/CeriCGLLTZ88 ... conf/vldb/CeriT87 conf/vldb/CasanovaTF88 ... conf/pods/CasanovaV83 journals/siamcomp/ChandraV85 conf/pods/ChaudhuriV92 conf/pods/ChaudhuriV93 conf/pods/ChaudhuriV94 journals/csur/CardelliW85 conf/pods/ChenW89 conf/pods/CohenW89 conf/vldb/CeriW90 conf/vldb/CeriW91 conf/iclp/ChenW92 conf/vldb/CeriW93 ... conf/birthday/Dahlhaus87 conf/vldb/Date81 books/aw/Date86 ... conf/dbpl/Dayal89 journals/tods/DayalB82 journals/ibmrd/DelobelC73 conf/icde/DelcambreD89 ... journals/tods/Delobel78 journals/jacm/Demolombe92 journals/tods/DateF92 ... conf/vldb/DayalHL91 journals/jacm/Paola69a conf/caap/DahlhausM86 journals/acr/DAtriM86 journals/iandc/DahlhausM92 conf/sigmod/DerrMP93 conf/vldb/MaindrevilleS88 conf/pods/Dong92 conf/adbt/BraP82 ... conf/dbpl/DongS91 journals/iandc/DongS95 conf/dbpl/DongS93 conf/dbpl/DongS93 conf/icdt/DongT92 conf/vldb/DenninghoffV91 conf/pods/DenninghoffV93 ... ... books/acm/kim95/DayalHW95 ... conf/pods/EiterGM94 conf/pods/Escobar-MolanoHJ93 ... books/el/leeuwen90/Emerson90 books/bc/ElmasriN89 ... conf/icse/Eswaran76 conf/sigmod/EpsteinSW78 ... ... conf/vldb/Fagin77 journals/tods/Fagin77 conf/sigmod/Fagin79 journals/tods/Fagin81 journals/ipl/FaginV83 journals/jacm/Fagin82 journals/jacm/Fagin83 journals/tcs/Fagin93 books/sp/kimrb85/FurtadoC85 ... journals/jlp/Fitting85a journals/tcs/FischerJT83 journals/acr/FaginKUV86 conf/icdt/FernandezM92 journals/tods/FaginMU82 conf/vldb/FaloutsosNS91 ... journals/ai/Forgy82 ... conf/sigmod/Freytag87 ... journals/siamcomp/FischerT83 journals/siamcomp/FaginMUY83 conf/pods/FaginUV83 conf/icalp/FaginV84 ... ... ... ... conf/sigmod/GraefeD87 conf/ride/GatziuD94 conf/sigmod/GardarinM86 conf/sigmod/GyssensG88 journals/tcs/GinsburgH83a journals/jacm/GinsburgH86 ... books/bc/tanselCGSS93/Ginsburg93 books/fm/GareyJ79 journals/jacm/GrantJ82 conf/vldb/GehaniJ91 conf/vldb/GhandeharizadehHJCELLTZ93 journals/tods/GhandeharizadehHJ96 conf/vldb/GehaniJS92 ... conf/sigmod/GehaniJS92 ... conf/deductive/GuptaKM92 conf/pods/GurevichL82 conf/iclp/GelfondL88 conf/adbt/77 journals/csur/GallaireMN84 conf/pods/GrahneMR92 conf/sigmod/GuptaMS93 conf/lics/GaifmanMSV87 journals/jacm/GaifmanMSV93 journals/jacm/GrahamMV86 conf/csl/GradelO92 ... conf/pods/Gottlob87 conf/pods/GyssensPG90 conf/dood/GiannottiPSZ91 books/aw/GoldbergR83 journals/acr/GrahneR86 journals/ipl/Grant77 ... journals/iandc/Grandjean83 conf/vldb/Grahne84 ... journals/csur/Graefe93 books/sp/Greibach75 journals/tods/GoodmanS82 journals/jcss/GoodmanS84 conf/focs/GurevichS85 ... conf/pods/GrumbachS94 conf/sigmod/GangulyST90 ... journals/tcs/Gunter92 ... ... ... ... conf/pods/GrahamV84 conf/pods/GrumbachV91 conf/icde/GardarinV92 conf/sigmod/GraefeW89 ... journals/jacm/GinsburgZ82 conf/vldb/GottlobZ88 ... ... journals/sigmod/Hanson89 ... journals/cacm/Harel80 journals/tkde/HaasCLMWLLPCS90 conf/lics/Hella92 journals/iandc/Herrmann95 conf/pods/HirstH93 conf/vldb/HullJ91 conf/ewdw/HullJ90 journals/csur/HullK87 journals/tods/HudsonK89 conf/lics/HillebrandKM93 conf/nato/HillebrandKR93 conf/jcdkb/HsuLM88 journals/ipl/HoneymanLY80 journals/tods/HammerM81 conf/adbt/HenschenMN82 ... journals/jacm/HenschenN84 journals/jacm/Honeyman82 conf/sigmod/HullS89 conf/pods/HullS89 journals/acta/HullS94 journals/jcss/HullS93 conf/fodo/HullTY89 journals/jcss/Hull83 journals/jacm/Hull84 journals/tcs/Hull85 journals/siamcomp/Hull86 ... conf/vldb/Hulin89 ... journals/jacm/HullY84 conf/vldb/HullY90 conf/pods/HullY91 conf/sigmod/IoannidisK90 journals/jcss/ImielinskiL84 conf/adbt/Imielinski82 journals/jcss/Immerman82 journals/iandc/Immerman86 ... journals/siamcomp/Immerman87 conf/pods/ImielinskiN88 conf/vldb/IoannidisNSS92 conf/sigmod/ImielinskiNV91 conf/dood/ImielinskiNV91 conf/vldb/Ioannidis85 journals/jacm/Jacobs82 conf/dbpl/JacobsH91 journals/csur/JarkeK84 journals/jcss/JohnsonK84 conf/popl/JaffarL87 books/el/leeuwen90/Johnson90 journals/jacm/Joyner76 conf/pods/JaeschkeS82 ... books/mk/minker88/Kanellakis88 books/el/leeuwen90/Kanellakis90 conf/oopsla/KhoshafianC86 conf/edbt/KotzDM88 conf/jcdkb/Keller82 conf/pods/Keller85 journals/computer/Keller86 ... journals/tods/Kent79 ... journals/ngc/RohmerLK86 conf/tacs/KanellakisG94 conf/jcdkb/Kifer88 conf/pods/KanellakisKR90 conf/sigmod/KiferKS92 ... conf/icdt/KiferL86 books/aw/KimL89 ... journals/tods/Klug80 journals/jacm/Klug82 journals/jacm/Klug88 journals/jacm/KiferLW95 conf/kr/KatsunoM91 journals/ai/KatsunoM92 conf/jcdkb/KrishnamurthyN88 journals/csur/Knight89 ... journals/iandc/Kolaitis91 journals/ai/Konolige88 conf/ifip/Kowalski74 journals/jacm/Kowalski75 conf/bncod/Kowalski84 conf/vldb/KoenigP81 journals/tods/KlugP82 ... conf/pods/KolaitisP88 conf/pods/KiferRS88 conf/sigmod/KrishnamurthyRS88 books/mg/SilberschatzK91 conf/iclp/KempT88 conf/sigmod/KellerU84 conf/dood/Kuchenhoff91 ... journals/jlp/Kunen87 conf/iclp/Kunen88 conf/pods/Kuper87 conf/pods/Kuper88 conf/ppcp/Kuper93 conf/pods/KuperV84 conf/stoc/KolaitisV87 journals/tcs/KarabegV90 journals/iandc/KolaitisV90 conf/pods/KolaitisV90 journals/tods/KarabegV91 journals/iandc/KolaitisV92 journals/tcs/KuperV93 journals/tods/KuperV93 journals/tse/KellerW85 conf/pods/KiferW89 conf/jcdkb/Lang88 books/el/Leeuwen90 ... journals/jcss/Leivant89 ... journals/iandc/Leivant90 ... conf/db-workshops/Levesque82 journals/ai/Levesque84 conf/mfdbs/Libkin91 conf/er/Lien79 journals/jacm/Lien82 books/mk/minker88/Lifschitz88 ... journals/tcs/Lindell91 journals/tods/Lipski79 journals/jacm/Lipski81 journals/tcs/LeratL86 journals/cj/LeveneL90 books/sp/Lloyd87 conf/pods/LakshmananM89 conf/tlca/LeivantM93 conf/sigmod/LaverMG83 conf/pods/LiptonN90 journals/jcss/LucchesiO78 conf/sigmod/Lohman88 ... conf/ijcai/Lozinskii85 books/ph/LewisP81 ... conf/sigmod/LecluseRV88 journals/is/LipeckS87 journals/jlp/LloydST87 journals/tods/LingTK81 conf/sigmod/LyngbaekV87 conf/dood/LefebvreV89 conf/pods/LibkinW93 conf/dbpl/LibkinW93 journals/jacm/Maier80 books/cs/Maier83 ... conf/vldb/Makinouchi77 conf/icalp/Makowsky81 ... conf/icdt/Malvestuto86 conf/aaai/MacGregorB92 journals/tods/MylopoulosBW80 conf/sigmod/McCarthyD89 journals/csur/MishraE92 conf/sigmod/MumickFPR90 books/mk/Minker88 journals/jlp/Minker88 conf/vldb/MillerIR93 journals/is/MillerIR94 journals/iandc/Mitchell83 conf/pods/Mitchell83 conf/vldb/MendelzonM79 journals/tods/MaierMS79 journals/jcss/MaierMSU80 conf/pods/MendelzonMW94 journals/debu/MorrisNSUG87 journals/ai/Moore85 conf/vldb/Morgenstern83 conf/pods/Morris88 ... conf/pods/MannilaR85 ... journals/jlp/MinkerR90 books/aw/MannilaR92 journals/acr/MaierRW86 ... journals/tods/MarkowitzS92 conf/pods/Marchetti-SpaccamelaPS87 journals/jacm/MaierSY81 conf/iclp/MorrisUG86 journals/tods/MaierUV84 conf/iclp/MorrisUG86 journals/acta/MakowskyV86 books/bc/MaierW88 books/mk/minker88/ManchandraW88 conf/pods/Naughton86 conf/sigmod/NgFS91 ... conf/vldb/Nejdl87 conf/adbt/NicolasM77 conf/sigmod/Nicolas78 journals/acta/Nicolas82 conf/ds/76 conf/pods/NaqviK88 journals/tods/NegriPS91 conf/vldb/NaughtonRSU89 conf/pods/NaughtonS87 ... ... conf/vldb/Osborn79 ... journals/tods/OzsoyogluY87 conf/adbt/Paige82 ... books/cs/Papadimitriou86 ... journals/ipl/Paredaens78 ... books/sp/ParedaensBGG89 journals/ai/Andersen91 books/el/leeuwen90/Perrin90 journals/ins/Petrov89 conf/pods/ParedaensG88 conf/pods/PatnaikI94 conf/adbt/ParedaensJ79 journals/csur/PeckhamM88 ... ... conf/sigmod/ParkerP80 ... conf/iclp/Przymusinski88 conf/pods/Przymusinski89 ... conf/vldb/ParkerSV92 conf/aaai/PearlV87 journals/ai/PereiraW80a conf/pods/PapadimitriouY92 journals/tkde/QianW91 ... journals/jlp/Ramakrishnan91 conf/pods/RamakrishnanBS87 ... conf/adbt/Reiter77 journals/ai/Reiter80 conf/db-workshops/Reiter82 journals/jacm/Reiter86 journals/tods/Rissanen77 conf/mfcs/Rissanen78 conf/pods/Rissanen82 ... journals/ngc/RohmerLK86 journals/jacm/Robinson65 ... conf/pods/Ross89 ... ... conf/sigmod/RoweS79 conf/sigmod/RichardsonS91 journals/debu/RamamohanaraoSBPNTZD87 conf/vldb/RamakrishnanSS92 conf/sigmod/RamakrishnanSSS93 conf/pods/RamakrishnanSUV89 journals/jcss/RamakrishnanSUV93 journals/jlp/RamakrishnanU95 conf/sigmod/SelingerACLP79 conf/sigmod/Sagiv81 journals/tods/Sagiv83 books/mk/minker88/Sagiv88 conf/slp/Sagiv90 conf/sigmod/Sciore81 journals/jacm/Sciore82 conf/pods/Sciore83 journals/acr/Sciore86 journals/jacm/SagivDPF81 conf/pods/X89 ... journals/ai/SmithG85 books/mk/minker88/Shepherdson88 journals/tods/Shipman81 conf/pods/Shmueli87 conf/iclp/SekiI88 conf/sigmod/ShmueliI84 journals/tc/Sickel76 journals/jsc/Siekmann89 conf/sigmod/StonebrakerJGP90 conf/vldb/SimonKM92 journals/csur/ShethL90 conf/pods/SeibL91 conf/sigmod/SuLRD93 conf/adbt/SilvaM79 journals/sigmod/Snodgrass90 journals/sigmod/Soo91 conf/pods/SuciuP94 conf/sigmod/StonebrakerR86 conf/slp/SudarshanR93 conf/pods/SagivS86 journals/cacm/Stonebraker81 books/mk/Stonebraker88 journals/tkde/Stonebraker92 books/aw/Stroustrup91 journals/jacm/SadriU82 conf/vldb/Su91 conf/pods/SagivV89 journals/jacm/SagivW82 journals/tods/StonebrakerWKH76 journals/jacm/SagivY80 conf/pods/SaccaZ86 journals/tcs/SaccaZ88 ... conf/pods/SaccaZ90 ... ... books/bc/TanselCGJSS93 ... journals/acr/ThomasF86 ... ... ... ... journals/tcs/Topor87 ... books/mk/minker88/ToporS88 ... journals/siamcomp/TarjanY84 journals/csur/TeoreyYF86 journals/algorithmica/UllmanG88 conf/pods/Ullman82 books/cs/Ullman82 journals/tods/Ullman85 books/cs/Ullman88 conf/pods/Ullman89 books/cs/Ullman89 conf/sigmod/Gelder86 ... conf/pods/BusscheG92 conf/focs/BusscheGAG92 conf/pods/BusscheP91 conf/slp/Gelder86 conf/pods/Gelder89 conf/pods/GelderRS88 journals/jacm/GelderRS91 journals/tods/GelderT91 journals/ipl/Vardi81 conf/stoc/Vardi82 conf/focs/Vardi82 journals/acta/Vardi83 journals/jcss/Vardi84 conf/pods/Vardi85 conf/pods/Vardi86 journals/jcss/Vardi86 ... conf/pods/Vardi88 conf/sigmod/Vassiliou79 ... ... journals/jacm/EmdenK76 conf/nf2/SchollABBGPRV87 journals/jacm/Vianu87 journals/acta/Vianu87 conf/eds/Vieille86 conf/iclp/Vieille87 ... conf/eds/Vieille88 journals/tcs/Vieille89 ... journals/tcs/VianuV92 conf/sigmod/WidomF90 conf/icde/WangH92 conf/pos/WidjojoHW90 journals/computer/Wiederhold92 conf/pods/Wilkins86 conf/pods/Winslett88 conf/sigmod/WolfsonO90 conf/pods/Wong93 conf/sigmod/WolfsonS88 journals/ibmrd/WangW75 journals/tods/WongY76 conf/vldb/Yannakakis81 journals/csur/YuC84 ... journals/jcss/YannakakisP82 ... journals/tods/Zaniolo82 journals/jcss/Zaniolo84 ... conf/edbt/ZhouH90 journals/ibmsj/Zloof77 books/mk/ZdonikM90 db/books/dbtext/abiteboul95.html" }
+{ "id": 73, "dblpid": "books/aw/AhoHU74", "title": "The Design and Analysis of Computer Algorithms.", "authors": "Alfred V. Aho John E. Hopcroft Jeffrey D. Ullman", "misc": "2002-01-03 Addison-Wesley 1974 0-201-00029-6" }
+{ "id": 75, "dblpid": "books/aw/AhoHU83", "title": "Data Structures and Algorithms.", "authors": "Alfred V. Aho John E. Hopcroft Jeffrey D. Ullman", "misc": "2002-01-03 Addison-Wesley 1983 0-201-00023-7" }
+{ "id": 77, "dblpid": "books/aw/AhoKW88", "title": "The AWK Programming Language", "authors": "Alfred V. Aho Brian W. Kernighan Peter J. Weinberger", "misc": "2002-01-03 Addison-Wesley 1988" }
+{ "id": 79, "dblpid": "books/aw/AhoSU86", "title": "Compilers  Princiles, Techniques, and Tools.", "authors": "Alfred V. Aho Ravi Sethi Jeffrey D. Ullman", "misc": "2002-01-03 Addison-Wesley 1986 0-201-10088-6" }
+{ "id": 81, "dblpid": "journals/siamcomp/AspnesW96", "authors": "James Aspnes Orli Waarts", "misc": "2002-01-03 1024-1044 1996 25 SIAM J. Comput. 5 db/journals/siamcomp/siamcomp25.html#AspnesW96" }
+{ "id": 83, "dblpid": "journals/siamcomp/Bloniarz83", "title": "A Shortest-Path Algorithm with Expected Time O(n² log n log* n).", "authors": "Peter A. Bloniarz", "misc": "2002-01-03 588-600 1983 12 SIAM J. Comput. 3 db/journals/siamcomp/siamcomp12.html#Bloniarz83" }
+{ "id": 85, "dblpid": "journals/siamcomp/Megiddo83a", "title": "Linear-Time Algorithms for Linear Programming in R³ and Related Problems.", "authors": "Nimrod Megiddo", "misc": "2002-01-03 759-776 1983 12 SIAM J. Comput. 4 db/journals/siamcomp/siamcomp12.html#Megiddo83a" }
+{ "id": 87, "dblpid": "journals/siamcomp/MoffatT87", "title": "An All Pairs Shortest Path Algorithm with Expected Time O(n² log n).", "authors": "Alistair Moffat Tadao Takaoka", "misc": "2002-01-03 1023-1031 1987 16 SIAM J. Comput. 6 db/journals/siamcomp/siamcomp16.html#MoffatT87" }
+{ "id": 89, "dblpid": "conf/icip/SchonfeldL98", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-11-05 123-127 1998 ICIP (3) db/conf/icip/icip1998-3.html#SchonfeldL98" }
+{ "id": 91, "dblpid": "journals/corr/abs-0802-2861", "title": "Geometric Set Cover and Hitting Sets for Polytopes in $R^3$", "authors": "Sören Laue", "misc": "2008-03-03 http //arxiv.org/abs/0802.2861 2008 CoRR abs/0802.2861 db/journals/corr/corr0802.html#abs-0802-2861 informal publication" }
+{ "id": 93, "dblpid": "journals/iandc/IbarraJCR91", "authors": "Oscar H. Ibarra Tao Jiang Jik H. Chang Bala Ravikumar", "misc": "2006-04-25 86-106 Inf. Comput. January 1991 90 1 db/journals/iandc/iandc90.html#IbarraJCR91" }
+{ "id": 95, "dblpid": "journals/jacm/GalilHLSW87", "title": "An O(n³log n) deterministic and an O(n³) Las Vegs isomorphism test for trivalent graphs.", "authors": "Zvi Galil Christoph M. Hoffmann Eugene M. Luks Claus-Peter Schnorr Andreas Weber", "misc": "2003-11-20 513-531 1987 34 J. ACM 3 http //doi.acm.org/10.1145/28869.28870 db/journals/jacm/jacm34.html#GalilHLSW87" }
+{ "id": 97, "dblpid": "journals/jacm/GalilT88", "title": "An O(n²(m + n log n)log n) min-cost flow algorithm.", "authors": "Zvi Galil Éva Tardos", "misc": "2003-11-20 374-386 1988 35 J. ACM 2 http //doi.acm.org/10.1145/42282.214090 db/journals/jacm/jacm35.html#GalilT88" }
+{ "id": 99, "dblpid": "series/synthesis/2009Weintraub", "title": "Jordan Canonical Form  Theory and Practice", "authors": "Steven H. Weintraub", "misc": "2009-09-06 Jordan Canonical Form  Theory and Practice http //dx.doi.org/10.2200/S00218ED1V01Y200908MAS006 http //dx.doi.org/10.2200/S00218ED1V01Y200908MAS006 2009 Synthesis Lectures on Mathematics & Statistics Morgan & Claypool Publishers" }
diff --git a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryInvertedIndexCreator.java b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryInvertedIndexCreator.java
index daa6d66..62a92cc 100644
--- a/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryInvertedIndexCreator.java
+++ b/asterix-app/src/main/java/edu/uci/ics/asterix/file/SecondaryInvertedIndexCreator.java
@@ -9,7 +9,7 @@
 import edu.uci.ics.asterix.metadata.declared.AqlMetadataProvider;
 import edu.uci.ics.asterix.metadata.entities.Index;
 import edu.uci.ics.asterix.om.types.IAType;
-import edu.uci.ics.asterix.optimizer.rules.am.InvertedIndexAccessMethod;
+import edu.uci.ics.asterix.om.util.NonTaggedFormatUtil;
 import edu.uci.ics.asterix.runtime.formats.FormatUtils;
 import edu.uci.ics.asterix.transaction.management.resource.ILocalResourceMetadata;
 import edu.uci.ics.asterix.transaction.management.resource.LSMInvertedIndexLocalResourceMetadata;
@@ -104,8 +104,8 @@
         int numTokenFields = (!isPartitioned) ? numSecondaryKeys : numSecondaryKeys + 1;
         tokenComparatorFactories = new IBinaryComparatorFactory[numTokenFields];
         tokenTypeTraits = new ITypeTraits[numTokenFields];
-        tokenComparatorFactories[0] = InvertedIndexAccessMethod.getTokenBinaryComparatorFactory(secondaryKeyType);
-        tokenTypeTraits[0] = InvertedIndexAccessMethod.getTokenTypeTrait(secondaryKeyType);
+        tokenComparatorFactories[0] = NonTaggedFormatUtil.getTokenBinaryComparatorFactory(secondaryKeyType);
+        tokenTypeTraits[0] = NonTaggedFormatUtil.getTokenTypeTrait(secondaryKeyType);
         if (isPartitioned) {
             // The partitioning field is hardcoded to be a short *without* an Asterix type tag.
             tokenComparatorFactories[1] = PointableBinaryComparatorFactory.of(ShortPointable.FACTORY);
@@ -114,7 +114,7 @@
         // Set tokenizer factory.
         // TODO: We might want to expose the hashing option at the AQL level,
         // and add the choice to the index metadata.
-        tokenizerFactory = InvertedIndexAccessMethod.getBinaryTokenizerFactory(secondaryKeyType.getTypeTag(),
+        tokenizerFactory = NonTaggedFormatUtil.getBinaryTokenizerFactory(secondaryKeyType.getTypeTag(),
                 createIndexStmt.getIndexType(), createIndexStmt.getGramLength());
         // Type traits for inverted-list elements. Inverted lists contain
         // primary keys.
@@ -130,8 +130,7 @@
         tokenKeyPairComparatorFactories = new IBinaryComparatorFactory[numTokenKeyPairFields];
         tokenKeyPairFields[0] = serdeProvider.getSerializerDeserializer(secondaryKeyType);
         tokenKeyPairTypeTraits[0] = tokenTypeTraits[0];
-        tokenKeyPairComparatorFactories[0] = InvertedIndexAccessMethod
-                .getTokenBinaryComparatorFactory(secondaryKeyType);
+        tokenKeyPairComparatorFactories[0] = NonTaggedFormatUtil.getTokenBinaryComparatorFactory(secondaryKeyType);
         int pkOff = 1;
         if (isPartitioned) {
             tokenKeyPairFields[1] = ShortSerializerDeserializer.INSTANCE;
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.1.ddl.aql
new file mode 100644
index 0000000..d00347d
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.1.ddl.aql
@@ -0,0 +1,24 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string?,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.2.update.aql
new file mode 100644
index 0000000..1d5d4fd
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-nulls.adm"),("format"="adm"));
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.3.ddl.aql
new file mode 100644
index 0000000..a79828c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.3.ddl.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index fuzzy_ngram_index on DBLP(title) type fuzzy ngram(3);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.4.update.aql
new file mode 100644
index 0000000..7e917b5
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.4.update.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index that are built on nullable fields.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+delete $o from dataset DBLP where $o.id>50;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.5.query.aql
new file mode 100644
index 0000000..c1c6247
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.5.query.aql
@@ -0,0 +1,13 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index that are built on nullable fields.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP')
+where contains($o.title, "Multimedia")
+order by $o.id
+return $o
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.1.ddl.aql
new file mode 100644
index 0000000..e98b328
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.1.ddl.aql
@@ -0,0 +1,23 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.2.update.aql
new file mode 100644
index 0000000..381ce87
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.3.ddl.aql
new file mode 100644
index 0000000..ede69f6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.3.ddl.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+create index fuzzy_ngram_index on DBLP(title) type fuzzy ngram(3);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.4.update.aql
new file mode 100644
index 0000000..9c58c7e
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.4.update.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+delete $o from dataset DBLP where $o.id>50;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.5.query.aql
new file mode 100644
index 0000000..ca070fc
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.5.query.aql
@@ -0,0 +1,13 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+for $o in dataset('DBLP')
+where contains($o.title, "Multimedia")
+order by $o.id
+return $o
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.1.ddl.aql
new file mode 100644
index 0000000..45570ac
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.1.ddl.aql
@@ -0,0 +1,24 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string?,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.2.update.aql
new file mode 100644
index 0000000..d26c270
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-nulls.adm"),("format"="adm"));
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.3.ddl.aql
new file mode 100644
index 0000000..3747bb1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.3.ddl.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+create index fuzzy_keyword_index on DBLP(title) type fuzzy keyword;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.4.update.aql
new file mode 100644
index 0000000..eb15450
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.4.update.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+delete $o from dataset DBLP where $o.id<50;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.5.query.aql
new file mode 100644
index 0000000..c1fb278
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.5.query.aql
@@ -0,0 +1,14 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+for $o in dataset('DBLP')
+let $jacc := similarity-jaccard-check(word-tokens($o.title), word-tokens("Transactions for Cooperative Environments"), 0.5f)
+where $jacc[0]
+return $o
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.1.ddl.aql
new file mode 100644
index 0000000..9d04c14
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.1.ddl.aql
@@ -0,0 +1,24 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.2.update.aql
new file mode 100644
index 0000000..a5995f6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.3.ddl.aql
new file mode 100644
index 0000000..97aef53
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.3.ddl.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+create index fuzzy_keyword_index on DBLP(title) type fuzzy keyword;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.4.update.aql
new file mode 100644
index 0000000..001e605
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.4.update.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+delete $o from dataset DBLP where $o.id<50;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.5.query.aql
new file mode 100644
index 0000000..7910859
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.5.query.aql
@@ -0,0 +1,14 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary fuzzy keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+for $o in dataset('DBLP')
+let $jacc := similarity-jaccard-check(word-tokens($o.title), word-tokens("Transactions for Cooperative Environments"), 0.5f)
+where $jacc[0]
+return $o
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.1.ddl.aql
new file mode 100644
index 0000000..370ac1c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.1.ddl.aql
@@ -0,0 +1,24 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string?,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.2.update.aql
new file mode 100644
index 0000000..a0c9b77
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-nulls.adm"),("format"="adm"));
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.3.ddl.aql
new file mode 100644
index 0000000..81104ce
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.3.ddl.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index ngram_index on DBLP(title) type ngram(3);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.4.update.aql
new file mode 100644
index 0000000..68fc68b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.4.update.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+delete $o from dataset DBLP where $o.id>50;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.query.aql
new file mode 100644
index 0000000..cc3c827
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.5.query.aql
@@ -0,0 +1,13 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP')
+where contains($o.title, "Multimedia")
+order by $o.id
+return $o
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.1.ddl.aql
new file mode 100644
index 0000000..e6f184c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.1.ddl.aql
@@ -0,0 +1,23 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.2.update.aql
new file mode 100644
index 0000000..5257ea5
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.3.ddl.aql
new file mode 100644
index 0000000..127c55d
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.3.ddl.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index ngram_index on DBLP(title) type ngram(3);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.4.update.aql
new file mode 100644
index 0000000..6a87cc9
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.4.update.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+delete $o from dataset DBLP where $o.id>50;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.query.aql
new file mode 100644
index 0000000..5650a21
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.5.query.aql
@@ -0,0 +1,13 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary ngram inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP')
+where contains($o.title, "Multimedia")
+order by $o.id
+return $o
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.1.ddl.aql
new file mode 100644
index 0000000..36b3d31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.1.ddl.aql
@@ -0,0 +1,22 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string?,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.2.update.aql
new file mode 100644
index 0000000..e66540c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-nulls.adm"),("format"="adm"));
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.3.ddl.aql
new file mode 100644
index 0000000..98ccfea
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.3.ddl.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+create index keyword_index on DBLP(title) type keyword;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.4.update.aql
new file mode 100644
index 0000000..0116a0a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.4.update.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index that are built on nullable fields.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+delete $o from dataset DBLP where $o.id<50;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.query.aql
new file mode 100644
index 0000000..979fb45
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.5.query.aql
@@ -0,0 +1,14 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index that are built on nullable fields. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+
+use dataverse test;
+
+for $o in dataset('DBLP')
+let $jacc := similarity-jaccard-check(word-tokens($o.title), word-tokens("Transactions for Cooperative Environments"), 0.5f)
+where $jacc[0]
+return $o
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.1.ddl.aql
new file mode 100644
index 0000000..5332316
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.1.ddl.aql
@@ -0,0 +1,23 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.2.update.aql
new file mode 100644
index 0000000..95fd5e8
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.3.ddl.aql
new file mode 100644
index 0000000..3481942
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.3.ddl.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index keyword_index on DBLP(title) type keyword;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.4.update.aql
new file mode 100644
index 0000000..d480735
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.4.update.aql
@@ -0,0 +1,10 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+delete $o from dataset DBLP where $o.id<50;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.query.aql
new file mode 100644
index 0000000..39603e7
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.5.query.aql
@@ -0,0 +1,14 @@
+/* 
+ * Test case Name  : scan-delete-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test deletion from secondary keyword inverted index.
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP')
+let $jacc := similarity-jaccard-check(word-tokens($o.title), word-tokens("Transactions for Cooperative Environments"), 0.5f)
+where $jacc[0]
+return $o
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.1.ddl.aql
new file mode 100644
index 0000000..21ff64a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.1.ddl.aql
@@ -0,0 +1,25 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string?,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+create dataset DBLP1(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.2.update.aql
new file mode 100644
index 0000000..9108ad6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-nulls.adm"),("format"="adm"));
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.3.ddl.aql
new file mode 100644
index 0000000..426654c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.3.ddl.aql
@@ -0,0 +1,11 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index fuzzy_ngram_index on DBLP(title) type fuzzy ngram(3);
+create index fuzzy_ngram_index1 on DBLP1(title) type fuzzy ngram(3);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.4.update.aql
new file mode 100644
index 0000000..2fe30df
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.4.update.aql
@@ -0,0 +1,21 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset DBLP1 (
+for $o in dataset('DBLP')
+where contains($o.title, "Multimedia")
+order by $o.id
+return {
+		"id": $o.id,
+		"dblpid": $o.dblpid,
+		"title": $o.title,
+		"authors": $o.authors,
+		"misc": $o.misc
+	}
+);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.5.query.aql
new file mode 100644
index 0000000..f61df2a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.5.query.aql
@@ -0,0 +1,13 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP1')
+where contains($o.title, "Multimedia")
+order by $o.id
+return $o
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.1.ddl.aql
new file mode 100644
index 0000000..af890c4
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.1.ddl.aql
@@ -0,0 +1,25 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+create dataset DBLP1(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.2.update.aql
new file mode 100644
index 0000000..382a4a6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.3.ddl.aql
new file mode 100644
index 0000000..8109213
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.3.ddl.aql
@@ -0,0 +1,11 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index fuzzy_ngram_index on DBLP(title) type fuzzy ngram(3);
+create index fuzzy_ngram_index1 on DBLP1(title) type fuzzy ngram(3);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.4.update.aql
new file mode 100644
index 0000000..b829b15
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.4.update.aql
@@ -0,0 +1,21 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset DBLP1 (
+for $o in dataset('DBLP')
+where contains($o.title, "Multimedia")
+order by $o.id
+return {
+		"id": $o.id,
+		"dblpid": $o.dblpid,
+		"title": $o.title,
+		"authors": $o.authors,
+		"misc": $o.misc
+	}
+);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.5.query.aql
new file mode 100644
index 0000000..324b351
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.5.query.aql
@@ -0,0 +1,13 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP1')
+where contains($o.title, "Multimedia")
+order by $o.id
+return $o
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.1.ddl.aql
new file mode 100644
index 0000000..7dbf7ee
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.1.ddl.aql
@@ -0,0 +1,25 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string?,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+create dataset DBLP1(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.2.update.aql
new file mode 100644
index 0000000..1d8126f
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-nulls.adm"),("format"="adm"));
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.3.ddl.aql
new file mode 100644
index 0000000..798622a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.3.ddl.aql
@@ -0,0 +1,11 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index fuzzy_keyword_index on DBLP(title) type fuzzy keyword;
+create index fuzzy_keyword_index1 on DBLP1(title) type fuzzy keyword;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.4.update.aql
new file mode 100644
index 0000000..3234c4e
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.4.update.aql
@@ -0,0 +1,20 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset DBLP1 (
+for $o in dataset('DBLP')
+order by $o.id
+return {
+		"id": $o.id,
+		"dblpid": $o.dblpid,
+		"title": $o.title,
+		"authors": $o.authors,
+		"misc": $o.misc
+	}
+);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.5.query.aql
new file mode 100644
index 0000000..43ad95c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.5.query.aql
@@ -0,0 +1,14 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP1')
+let $jacc := similarity-jaccard-check(word-tokens($o.title), word-tokens("Transactions for Cooperative Environments"), 0.5f)
+where $jacc[0]
+return $o
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.1.ddl.aql
new file mode 100644
index 0000000..5dd6f1a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.1.ddl.aql
@@ -0,0 +1,25 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+create dataset DBLP1(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.2.update.aql
new file mode 100644
index 0000000..25e9446
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.3.ddl.aql
new file mode 100644
index 0000000..f43c5cf
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.3.ddl.aql
@@ -0,0 +1,11 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index fuzzy_keyword_index on DBLP(title) type fuzzy keyword;
+create index fuzzy_keyword_index1 on DBLP1(title) type fuzzy keyword;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.4.update.aql
new file mode 100644
index 0000000..b8a1af1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.4.update.aql
@@ -0,0 +1,20 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset DBLP1 (
+for $o in dataset('DBLP')
+order by $o.id
+return {
+		"id": $o.id,
+		"dblpid": $o.dblpid,
+		"title": $o.title,
+		"authors": $o.authors,
+		"misc": $o.misc
+	}
+);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.5.query.aql
new file mode 100644
index 0000000..0fe611a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.5.query.aql
@@ -0,0 +1,14 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-fuzzy-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary fuzzy keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP1')
+let $jacc := similarity-jaccard-check(word-tokens($o.title), word-tokens("Transactions for Cooperative Environments"), 0.5f)
+where $jacc[0]
+return $o
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.1.ddl.aql
new file mode 100644
index 0000000..5f82843
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.1.ddl.aql
@@ -0,0 +1,25 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string?,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+create dataset DBLP1(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.2.update.aql
new file mode 100644
index 0000000..bde4abd
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-nulls.adm"),("format"="adm"));
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.3.ddl.aql
new file mode 100644
index 0000000..23a302b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.3.ddl.aql
@@ -0,0 +1,11 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index ngram_index on DBLP(title) type ngram(3);
+create index ngram_index1 on DBLP1(title) type ngram(3);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.4.update.aql
new file mode 100644
index 0000000..ccef47a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.4.update.aql
@@ -0,0 +1,21 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset DBLP1 (
+for $o in dataset('DBLP')
+where contains($o.title, "Multimedia")
+order by $o.id
+return {
+		"id": $o.id,
+		"dblpid": $o.dblpid,
+		"title": $o.title,
+		"authors": $o.authors,
+		"misc": $o.misc
+	}
+);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.query.aql
new file mode 100644
index 0000000..ec2c974
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.5.query.aql
@@ -0,0 +1,13 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP1')
+where contains($o.title, "Multimedia")
+order by $o.id
+return $o
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.1.ddl.aql
new file mode 100644
index 0000000..eee618b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.1.ddl.aql
@@ -0,0 +1,25 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+create dataset DBLP1(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.2.update.aql
new file mode 100644
index 0000000..a22b722
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.3.ddl.aql
new file mode 100644
index 0000000..d40a27b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.3.ddl.aql
@@ -0,0 +1,11 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index ngram_index on DBLP(title) type ngram(3);
+create index ngram_index1 on DBLP1(title) type ngram(3);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.4.update.aql
new file mode 100644
index 0000000..3d81edf
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.4.update.aql
@@ -0,0 +1,21 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset DBLP1 (
+for $o in dataset('DBLP')
+where contains($o.title, "Multimedia")
+order by $o.id
+return {
+		"id": $o.id,
+		"dblpid": $o.dblpid,
+		"title": $o.title,
+		"authors": $o.authors,
+		"misc": $o.misc
+	}
+);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.query.aql
new file mode 100644
index 0000000..bd9eb2b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.5.query.aql
@@ -0,0 +1,13 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-ngram-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary ngram inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP1')
+where contains($o.title, "Multimedia")
+order by $o.id
+return $o
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.1.ddl.aql
new file mode 100644
index 0000000..bafad5b
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.1.ddl.aql
@@ -0,0 +1,25 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string?,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+create dataset DBLP1(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.2.update.aql
new file mode 100644
index 0000000..e3f0c6f
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-nulls.adm"),("format"="adm"));
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.3.ddl.aql
new file mode 100644
index 0000000..64d07c0
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.3.ddl.aql
@@ -0,0 +1,11 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index keyword_index on DBLP(title) type keyword;
+create index keyword_index1 on DBLP1(title) type keyword;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.4.update.aql
new file mode 100644
index 0000000..b2f265fb
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.4.update.aql
@@ -0,0 +1,20 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset DBLP1 (
+for $o in dataset('DBLP')
+order by $o.id
+return {
+		"id": $o.id,
+		"dblpid": $o.dblpid,
+		"title": $o.title,
+		"authors": $o.authors,
+		"misc": $o.misc
+	}
+);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.query.aql
new file mode 100644
index 0000000..10bff06
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.5.query.aql
@@ -0,0 +1,14 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index-nullable.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index that are built on nullable fields.  
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP1')
+let $jacc := similarity-jaccard-check(word-tokens($o.title), word-tokens("Transactions for Cooperative Environments"), 0.5f)
+where $jacc[0]
+return $o
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.1.ddl.aql
new file mode 100644
index 0000000..642a0c8
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.1.ddl.aql
@@ -0,0 +1,25 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+drop dataverse test if exists;
+create dataverse test;
+
+use dataverse test;
+
+create type DBLPType as closed {
+  id: int32, 
+  dblpid: string,
+  title: string,
+  authors: string,
+  misc: string
+}
+
+create dataset DBLP(DBLPType) primary key id;
+create dataset DBLP1(DBLPType) primary key id;
+
+
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.2.update.aql
new file mode 100644
index 0000000..c51f848
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.2.update.aql
@@ -0,0 +1,12 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+load dataset DBLP using "edu.uci.ics.asterix.external.dataset.adapter.NCFileSystemAdapter"
+(("path"="nc1://data/dblp-small/dblp-small-id.txt"),("format"="delimited-text"),("delimiter"=":")) pre-sorted;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.3.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.3.ddl.aql
new file mode 100644
index 0000000..ac90624
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.3.ddl.aql
@@ -0,0 +1,11 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+create index keyword_index on DBLP(title) type keyword;
+create index keyword_index1 on DBLP1(title) type keyword;
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.4.update.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.4.update.aql
new file mode 100644
index 0000000..57ce169
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.4.update.aql
@@ -0,0 +1,20 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+insert into dataset DBLP1 (
+for $o in dataset('DBLP')
+order by $o.id
+return {
+		"id": $o.id,
+		"dblpid": $o.dblpid,
+		"title": $o.title,
+		"authors": $o.authors,
+		"misc": $o.misc
+	}
+);
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.query.aql b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.query.aql
new file mode 100644
index 0000000..73fc519
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.5.query.aql
@@ -0,0 +1,14 @@
+/* 
+ * Test case Name  : scan-insert-inverted-index-word-secondary-index.aql
+ * Description     : This test is intended to test insertion from secondary keyword inverted index. 
+ * Expected Result : Success
+ * Date            : March 31 2013
+ */
+ 
+use dataverse test;
+
+for $o in dataset('DBLP1')
+let $jacc := similarity-jaccard-check(word-tokens($o.title), word-tokens("Transactions for Cooperative Environments"), 0.5f)
+where $jacc[0]
+return $o
+
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.1.adm
new file mode 100644
index 0000000..7810e91
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable.1.adm
@@ -0,0 +1 @@
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.1.adm
new file mode 100644
index 0000000..7810e91
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-ngram-secondary-index/scan-delete-inverted-index-fuzzy-ngram-secondary-index.1.adm
@@ -0,0 +1 @@
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.1.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable/scan-delete-inverted-index-fuzzy-word-secondary-index-nullable.1.adm
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.1.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-fuzzy-word-secondary-index/scan-delete-inverted-index-fuzzy-word-secondary-index.1.adm
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.1.adm
new file mode 100644
index 0000000..7810e91
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-ngram-secondary-index-nullable/scan-delete-inverted-index-ngram-secondary-index-nullable.1.adm
@@ -0,0 +1 @@
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.1.adm
new file mode 100644
index 0000000..7810e91
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-ngram-secondary-index/scan-delete-inverted-index-ngram-secondary-index.1.adm
@@ -0,0 +1 @@
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.1.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-word-secondary-index-nullable/scan-delete-inverted-index-word-secondary-index-nullable.1.adm
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.1.adm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-delete-inverted-index-word-secondary-index/scan-delete-inverted-index-word-secondary-index.1.adm
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.1.adm
new file mode 100644
index 0000000..8a99b26
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable/scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable.1.adm
@@ -0,0 +1,3 @@
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
+{ "id": 89, "dblpid": "conf/icip/SchonfeldL98", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-11-05 123-127 1998 ICIP (3) db/conf/icip/icip1998-3.html#SchonfeldL98" }
+{ "id": 90, "dblpid": "conf/hicss/SchonfeldL99", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases ¾ Visual Search Engine.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-01-03 1999 HICSS http //computer.org/proceedings/hicss/0001/00013/00013006abs.htm db/conf/hicss/hicss1999-3.html#SchonfeldL99" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.1.adm
new file mode 100644
index 0000000..8a99b26
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-ngram-secondary-index/scan-insert-inverted-index-fuzzy-ngram-secondary-index.1.adm
@@ -0,0 +1,3 @@
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
+{ "id": 89, "dblpid": "conf/icip/SchonfeldL98", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-11-05 123-127 1998 ICIP (3) db/conf/icip/icip1998-3.html#SchonfeldL98" }
+{ "id": 90, "dblpid": "conf/hicss/SchonfeldL99", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases ¾ Visual Search Engine.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-01-03 1999 HICSS http //computer.org/proceedings/hicss/0001/00013/00013006abs.htm db/conf/hicss/hicss1999-3.html#SchonfeldL99" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.1.adm
new file mode 100644
index 0000000..5bf6ae0
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable/scan-insert-inverted-index-fuzzy-word-secondary-index-nullable.1.adm
@@ -0,0 +1 @@
+{ "id": 9, "dblpid": "books/acm/kim95/Kaiser95", "title": "Cooperative Transactions for Multiuser Environments.", "authors": "Gail E. Kaiser", "misc": "2002-01-03 409-433 1995 Modern Database Systems db/books/collections/kim95.html#Kaiser95" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.1.adm
new file mode 100644
index 0000000..5bf6ae0
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-fuzzy-word-secondary-index/scan-insert-inverted-index-fuzzy-word-secondary-index.1.adm
@@ -0,0 +1 @@
+{ "id": 9, "dblpid": "books/acm/kim95/Kaiser95", "title": "Cooperative Transactions for Multiuser Environments.", "authors": "Gail E. Kaiser", "misc": "2002-01-03 409-433 1995 Modern Database Systems db/books/collections/kim95.html#Kaiser95" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.1.adm
new file mode 100644
index 0000000..8a99b26
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-ngram-secondary-index-nullable/scan-insert-inverted-index-ngram-secondary-index-nullable.1.adm
@@ -0,0 +1,3 @@
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
+{ "id": 89, "dblpid": "conf/icip/SchonfeldL98", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-11-05 123-127 1998 ICIP (3) db/conf/icip/icip1998-3.html#SchonfeldL98" }
+{ "id": 90, "dblpid": "conf/hicss/SchonfeldL99", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases ¾ Visual Search Engine.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-01-03 1999 HICSS http //computer.org/proceedings/hicss/0001/00013/00013006abs.htm db/conf/hicss/hicss1999-3.html#SchonfeldL99" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.1.adm
new file mode 100644
index 0000000..8a99b26
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-ngram-secondary-index/scan-insert-inverted-index-ngram-secondary-index.1.adm
@@ -0,0 +1,3 @@
+{ "id": 4, "dblpid": "books/acm/kim95/ChristodoulakisK95", "title": "Multimedia Information Systems  Issues and Approaches.", "authors": "Stavros Christodoulakis Leonidas Koveos", "misc": "2002-01-03 318-337 1995 Modern Database Systems db/books/collections/kim95.html#ChristodoulakisK95" }
+{ "id": 89, "dblpid": "conf/icip/SchonfeldL98", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-11-05 123-127 1998 ICIP (3) db/conf/icip/icip1998-3.html#SchonfeldL98" }
+{ "id": 90, "dblpid": "conf/hicss/SchonfeldL99", "title": "VORTEX  Video Retrieval and Tracking from Compressed Multimedia Databases ¾ Visual Search Engine.", "authors": "Dan Schonfeld Dan Lelescu", "misc": "2002-01-03 1999 HICSS http //computer.org/proceedings/hicss/0001/00013/00013006abs.htm db/conf/hicss/hicss1999-3.html#SchonfeldL99" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.1.adm
new file mode 100644
index 0000000..5bf6ae0
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-word-secondary-index-nullable/scan-insert-inverted-index-word-secondary-index-nullable.1.adm
@@ -0,0 +1 @@
+{ "id": 9, "dblpid": "books/acm/kim95/Kaiser95", "title": "Cooperative Transactions for Multiuser Environments.", "authors": "Gail E. Kaiser", "misc": "2002-01-03 409-433 1995 Modern Database Systems db/books/collections/kim95.html#Kaiser95" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.1.adm b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.1.adm
new file mode 100644
index 0000000..5bf6ae0
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/dml/scan-insert-inverted-index-word-secondary-index/scan-insert-inverted-index-word-secondary-index.1.adm
@@ -0,0 +1 @@
+{ "id": 9, "dblpid": "books/acm/kim95/Kaiser95", "title": "Cooperative Transactions for Multiuser Environments.", "authors": "Gail E. Kaiser", "misc": "2002-01-03 409-433 1995 Modern Database Systems db/books/collections/kim95.html#Kaiser95" }
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/testsuite.xml b/asterix-app/src/test/resources/runtimets/testsuite.xml
index f1f2a26..af77e2f 100644
--- a/asterix-app/src/test/resources/runtimets/testsuite.xml
+++ b/asterix-app/src/test/resources/runtimets/testsuite.xml
@@ -925,6 +925,86 @@
         <output-dir compare="Text">scan-insert-rtree-secondary-index</output-dir>
       </compilation-unit>
     </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-insert-inverted-index-ngram-secondary-index">
+        <output-dir compare="Text">scan-insert-inverted-index-ngram-secondary-index</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-insert-inverted-index-word-secondary-index">
+        <output-dir compare="Text">scan-insert-inverted-index-word-secondary-index</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-insert-inverted-index-fuzzy-ngram-secondary-index">
+        <output-dir compare="Text">scan-insert-inverted-index-fuzzy-ngram-secondary-index</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-insert-inverted-index-fuzzy-word-secondary-index">
+        <output-dir compare="Text">scan-insert-inverted-index-fuzzy-word-secondary-index</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-insert-inverted-index-ngram-secondary-index-nullable">
+        <output-dir compare="Text">scan-insert-inverted-index-ngram-secondary-index-nullable</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-insert-inverted-index-word-secondary-index-nullable">
+        <output-dir compare="Text">scan-insert-inverted-index-word-secondary-index-nullable</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable">
+        <output-dir compare="Text">scan-insert-inverted-index-fuzzy-ngram-secondary-index-nullable</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-insert-inverted-index-fuzzy-word-secondary-index-nullable">
+        <output-dir compare="Text">scan-insert-inverted-index-fuzzy-word-secondary-index-nullable</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-delete-inverted-index-ngram-secondary-index">
+        <output-dir compare="Text">scan-delete-inverted-index-ngram-secondary-index</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-delete-inverted-index-word-secondary-index">
+        <output-dir compare="Text">scan-delete-inverted-index-word-secondary-index</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-delete-inverted-index-fuzzy-ngram-secondary-index">
+        <output-dir compare="Text">scan-delete-inverted-index-fuzzy-ngram-secondary-index</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-delete-inverted-index-fuzzy-word-secondary-index">
+        <output-dir compare="Text">scan-delete-inverted-index-fuzzy-word-secondary-index</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-delete-inverted-index-ngram-secondary-index-nullable">
+        <output-dir compare="Text">scan-delete-inverted-index-ngram-secondary-index-nullable</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-delete-inverted-index-word-secondary-index-nullable">
+        <output-dir compare="Text">scan-delete-inverted-index-word-secondary-index-nullable</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable">
+        <output-dir compare="Text">scan-delete-inverted-index-fuzzy-ngram-secondary-index-nullable</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="dml">
+      <compilation-unit name="scan-delete-inverted-index-fuzzy-word-secondary-index-nullable">
+        <output-dir compare="Text">scan-delete-inverted-index-fuzzy-word-secondary-index-nullable</output-dir>
+      </compilation-unit>
+    </test-case>
   </test-group>
   <test-group name="employee">
     <test-case FilePath="employee">
diff --git a/asterix-events/src/main/java/edu/uci/ics/asterix/event/management/EventUtil.java b/asterix-events/src/main/java/edu/uci/ics/asterix/event/management/EventUtil.java
index d484947..e6c58eb 100644
--- a/asterix-events/src/main/java/edu/uci/ics/asterix/event/management/EventUtil.java
+++ b/asterix-events/src/main/java/edu/uci/ics/asterix/event/management/EventUtil.java
@@ -31,215 +31,232 @@
 
 public class EventUtil {
 
-    public static final String EVENTS_DIR = "events";
-    public static final String CLUSTER_CONF = "config/cluster.xml";
-    public static final String PATTERN_CONF = "config/pattern.xml";
-    public static final DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
+	public static final String EVENTS_DIR = "events";
+	public static final String CLUSTER_CONF = "config/cluster.xml";
+	public static final String PATTERN_CONF = "config/pattern.xml";
+	public static final DateFormat dateFormat = new SimpleDateFormat(
+			"yyyy/MM/dd HH:mm:ss");
 
-    private static final String IP_LOCATION = "IP_LOCATION";
-    private static final String CLUSTER_ENV = "ENV";
-    private static final String SCRIPT = "SCRIPT";
-    private static final String ARGS = "ARGS";
-    private static final String EXECUTE_SCRIPT = "events/execute.sh";
+	private static final String IP_LOCATION = "IP_LOCATION";
+	private static final String CLUSTER_ENV = "ENV";
+	private static final String SCRIPT = "SCRIPT";
+	private static final String ARGS = "ARGS";
+	private static final String EXECUTE_SCRIPT = "events/execute.sh";
 
-    public static long parseTimeInterval(ValueType v, String unit) throws IllegalArgumentException {
-        int val = 0;
-        switch (v.getType()) {
-            case ABS:
-                val = Integer.parseInt(v.getAbsoluteValue());
-                break;
-            case RANDOM_MIN_MAX:
-                val = Randomizer.getInstance().getRandomInt(v.getMin(), v.getMax());
-                break;
-            case RANDOM_RANGE:
-                String[] values = v.getRangeSet();
-                val = Integer.parseInt(values[Randomizer.getInstance().getRandomInt(0, values.length - 1)]);
-                break;
-        }
-        return computeInterval(val, unit);
-    }
+	public static long parseTimeInterval(ValueType v, String unit)
+			throws IllegalArgumentException {
+		int val = 0;
+		switch (v.getType()) {
+		case ABS:
+			val = Integer.parseInt(v.getAbsoluteValue());
+			break;
+		case RANDOM_MIN_MAX:
+			val = Randomizer.getInstance().getRandomInt(v.getMin(), v.getMax());
+			break;
+		case RANDOM_RANGE:
+			String[] values = v.getRangeSet();
+			val = Integer.parseInt(values[Randomizer.getInstance()
+					.getRandomInt(0, values.length - 1)]);
+			break;
+		}
+		return computeInterval(val, unit);
+	}
 
-    public static long parseTimeInterval(String v, String unit) throws IllegalArgumentException {
-        int value = Integer.parseInt(v);
-        return computeInterval(value, unit);
-    }
+	public static long parseTimeInterval(String v, String unit)
+			throws IllegalArgumentException {
+		int value = Integer.parseInt(v);
+		return computeInterval(value, unit);
+	}
 
-    private static long computeInterval(int val, String unit) {
-        int vmult = 1;
-        if ("hr".equalsIgnoreCase(unit)) {
-            vmult = 3600 * 1000;
-        } else if ("min".equalsIgnoreCase(unit)) {
-            vmult = 60 * 1000;
-        } else if ("sec".equalsIgnoreCase(unit)) {
-            vmult = 1000;
-        } else
-            throw new IllegalArgumentException(" invalid unit value specified for frequency (hr,min,sec)");
-        return val * vmult;
+	private static long computeInterval(int val, String unit) {
+		int vmult = 1;
+		if ("hr".equalsIgnoreCase(unit)) {
+			vmult = 3600 * 1000;
+		} else if ("min".equalsIgnoreCase(unit)) {
+			vmult = 60 * 1000;
+		} else if ("sec".equalsIgnoreCase(unit)) {
+			vmult = 1000;
+		} else
+			throw new IllegalArgumentException(
+					" invalid unit value specified for frequency (hr,min,sec)");
+		return val * vmult;
 
-    }
+	}
 
-    public static Event getEvent(Pattern pattern, Events events) {
-        for (Event event : events.getEvent()) {
-            if (event.getType().equals(pattern.getEvent().getType())) {
-                return event;
-            }
-        }
-        throw new IllegalArgumentException(" Unknown event type" + pattern.getEvent().getType());
-    }
+	public static Event getEvent(Pattern pattern, Events events) {
+		for (Event event : events.getEvent()) {
+			if (event.getType().equals(pattern.getEvent().getType())) {
+				return event;
+			}
+		}
+		throw new IllegalArgumentException(" Unknown event type"
+				+ pattern.getEvent().getType());
+	}
 
-    public static Node getEventLocation(Pattern pattern, List<Node> candidateLocations, Cluster cluster) {
-        ValueType value = new ValueType(pattern.getEvent().getNodeid().getValue());
-        Node location = null;
-        Type vtype = value.getType();
+	public static Node getEventLocation(Pattern pattern,
+			List<Node> candidateLocations, Cluster cluster) {
+		ValueType value = new ValueType(pattern.getEvent().getNodeid()
+				.getValue());
+		Node location = null;
+		Type vtype = value.getType();
 
-        switch (vtype) {
-            case ABS:
-                location = getNodeFromId(value.getAbsoluteValue(), cluster);
-                break;
-            case RANDOM_RANGE:
-                int nodeIndex = Randomizer.getInstance().getRandomInt(0, candidateLocations.size() - 1);
-                location = candidateLocations.get(nodeIndex);
-                break;
-            case RANDOM_MIN_MAX:
-                throw new IllegalStateException(" Canont configure a min max value range for location");
-        }
-        return location;
+		switch (vtype) {
+		case ABS:
+			location = getNodeFromId(value.getAbsoluteValue(), cluster);
+			break;
+		case RANDOM_RANGE:
+			int nodeIndex = Randomizer.getInstance().getRandomInt(0,
+					candidateLocations.size() - 1);
+			location = candidateLocations.get(nodeIndex);
+			break;
+		case RANDOM_MIN_MAX:
+			throw new IllegalStateException(
+					" Canont configure a min max value range for location");
+		}
+		return location;
 
-    }
+	}
 
-    public static List<Node> getCandidateLocations(Pattern pattern, Cluster cluster) {
-        ValueType value = new ValueType(pattern.getEvent().getNodeid().getValue());
-        List<Node> candidateList = new ArrayList<Node>();
-        switch (value.getType()) {
-            case ABS:
-                candidateList.add(getNodeFromId(value.getAbsoluteValue(), cluster));
-                break;
-            case RANDOM_RANGE:
-                boolean anyOption = false;
-                String[] values = value.getRangeSet();
-                for (String v : values) {
-                    if (v.equalsIgnoreCase("ANY")) {
-                        anyOption = true;
-                    }
-                }
-                if (anyOption) {
-                    for (Node node : cluster.getNode()) {
-                        candidateList.add(node);
-                    }
-                } else {
-                    boolean found = false;
-                    for (String v : values) {
-                        for (Node node : cluster.getNode()) {
-                            if (node.getId().equals(v)) {
-                                candidateList.add(node);
-                                found = true;
-                                break;
-                            }
-                        }
-                        if (!found) {
-                            throw new IllegalStateException("Unknonw nodeId : " + v);
-                        }
-                        found = false;
-                    }
+	public static List<Node> getCandidateLocations(Pattern pattern,
+			Cluster cluster) {
+		ValueType value = new ValueType(pattern.getEvent().getNodeid()
+				.getValue());
+		List<Node> candidateList = new ArrayList<Node>();
+		switch (value.getType()) {
+		case ABS:
+			candidateList.add(getNodeFromId(value.getAbsoluteValue(), cluster));
+			break;
+		case RANDOM_RANGE:
+			boolean anyOption = false;
+			String[] values = value.getRangeSet();
+			for (String v : values) {
+				if (v.equalsIgnoreCase("ANY")) {
+					anyOption = true;
+				}
+			}
+			if (anyOption) {
+				for (Node node : cluster.getNode()) {
+					candidateList.add(node);
+				}
+			} else {
+				boolean found = false;
+				for (String v : values) {
+					for (Node node : cluster.getNode()) {
+						if (node.getId().equals(v)) {
+							candidateList.add(node);
+							found = true;
+							break;
+						}
+					}
+					if (!found) {
+						throw new IllegalStateException("Unknonw nodeId : " + v);
+					}
+					found = false;
+				}
 
-                }
-                String[] excluded = value.getRangeExcluded();
-                if (excluded != null && excluded.length > 0) {
-                    List<Node> markedForRemoval = new ArrayList<Node>();
-                    for (String exclusion : excluded) {
-                        for (Node node : candidateList) {
-                            if (node.getId().equals(exclusion)) {
-                                markedForRemoval.add(node);
-                            }
-                        }
-                    }
-                    candidateList.removeAll(markedForRemoval);
-                }
-                break;
-            case RANDOM_MIN_MAX:
-                throw new IllegalStateException(" Invalid value configured for location");
-        }
-        return candidateList;
-    }
+			}
+			String[] excluded = value.getRangeExcluded();
+			if (excluded != null && excluded.length > 0) {
+				List<Node> markedForRemoval = new ArrayList<Node>();
+				for (String exclusion : excluded) {
+					for (Node node : candidateList) {
+						if (node.getId().equals(exclusion)) {
+							markedForRemoval.add(node);
+						}
+					}
+				}
+				candidateList.removeAll(markedForRemoval);
+			}
+			break;
+		case RANDOM_MIN_MAX:
+			throw new IllegalStateException(
+					" Invalid value configured for location");
+		}
+		return candidateList;
+	}
 
-    private static Node getNodeFromId(String nodeid, Cluster cluster) {
-        if (nodeid.equals(EventDriver.CLIENT_NODE.getId())) {
-            return EventDriver.CLIENT_NODE;
-        }
+	private static Node getNodeFromId(String nodeid, Cluster cluster) {
+		if (nodeid.equals(EventDriver.CLIENT_NODE.getId())) {
+			return EventDriver.CLIENT_NODE;
+		}
 
-        if (nodeid.equals(cluster.getMasterNode().getId())) {
-            String javaOpts = cluster.getMasterNode().getJavaOpts() == null ? cluster.getJavaOpts() : cluster
-                    .getMasterNode().getJavaOpts();
-            String logDir = cluster.getMasterNode().getLogdir() == null ? cluster.getLogdir() : cluster.getMasterNode()
-                    .getLogdir();
-            String javaHome = cluster.getMasterNode().getJavaHome() == null ? cluster.getJavaHome() : cluster
-                    .getMasterNode().getJavaHome();
-            BigInteger debug = cluster.getMasterNode().getDebug();
-            return new Node(cluster.getMasterNode().getId(), cluster.getMasterNode().getClusterIp(), javaHome,
-                    javaOpts, logDir, null, null, debug);
-        }
+		if (nodeid.equals(cluster.getMasterNode().getId())) {
+			String javaOpts = cluster.getMasterNode().getJavaOpts() == null ? cluster
+					.getJavaOpts() : cluster.getMasterNode().getJavaOpts();
+			String logDir = cluster.getMasterNode().getLogdir() == null ? cluster
+					.getLogdir() : cluster.getMasterNode().getLogdir();
+			String javaHome = cluster.getMasterNode().getJavaHome() == null ? cluster
+					.getJavaHome() : cluster.getMasterNode().getJavaHome();
+			BigInteger debug = cluster.getMasterNode().getDebug();
+			return new Node(cluster.getMasterNode().getId(), cluster
+					.getMasterNode().getClusterIp(), javaHome, javaOpts,
+					logDir, null, null, debug);
+		}
 
-        List<Node> nodeList = cluster.getNode();
-        for (Node node : nodeList) {
-            if (node.getId().equals(nodeid)) {
-                return node;
-            }
-        }
-        StringBuffer buffer = new StringBuffer();
-        buffer.append(EventDriver.CLIENT_NODE.getId() + ",");
-        buffer.append(cluster.getMasterNode().getId() + ",");
-        for (Node v : cluster.getNode()) {
-            buffer.append(v.getId() + ",");
-        }
-        buffer.deleteCharAt(buffer.length() - 1);
-        throw new IllegalArgumentException("Unknown node id :" + nodeid + " valid ids:" + buffer);
-    }
+		List<Node> nodeList = cluster.getNode();
+		for (Node node : nodeList) {
+			if (node.getId().equals(nodeid)) {
+				return node;
+			}
+		}
+		StringBuffer buffer = new StringBuffer();
+		buffer.append(EventDriver.CLIENT_NODE.getId() + ",");
+		buffer.append(cluster.getMasterNode().getId() + ",");
+		for (Node v : cluster.getNode()) {
+			buffer.append(v.getId() + ",");
+		}
+		buffer.deleteCharAt(buffer.length() - 1);
+		throw new IllegalArgumentException("Unknown node id :" + nodeid
+				+ " valid ids:" + buffer);
+	}
 
-    public static void executeEventScript(Node node, String script, List<String> args, Cluster cluster)
-            throws IOException, InterruptedException {
-        List<String> pargs = new ArrayList<String>();
-        pargs.add("/bin/bash");
-        pargs.add(EventDriver.getEventsDir() + "/" + EXECUTE_SCRIPT);
-        StringBuffer argBuffer = new StringBuffer();
-        String env = EventDriver.getStringifiedEnv(cluster) + " " + IP_LOCATION + "=" + node.getClusterIp();
-        if (args != null) {
-            for (String arg : args) {
-                argBuffer.append(arg + " ");
-            }
-        }
-        ProcessBuilder pb = new ProcessBuilder(pargs);
-        pb.environment().putAll(EventDriver.getEnvironment());
-        pb.environment().put(IP_LOCATION, node.getClusterIp());
-        pb.environment().put(CLUSTER_ENV, env);
-        pb.environment().put(SCRIPT, script);
-        pb.environment().put(ARGS, argBuffer.toString());
-        pb.start();
-    }
+	public static void executeEventScript(Node node, String script,
+			List<String> args, Cluster cluster) throws IOException,
+			InterruptedException {
+		List<String> pargs = new ArrayList<String>();
+		pargs.add("/bin/bash");
+		pargs.add(EventDriver.getEventsDir() + "/" + EXECUTE_SCRIPT);
+		StringBuffer argBuffer = new StringBuffer();
+		String env = EventDriver.getStringifiedEnv(cluster) + " " + IP_LOCATION
+				+ "=" + node.getClusterIp();
+		if (args != null) {
+			for (String arg : args) {
+				argBuffer.append(arg + " ");
+			}
+		}
+		ProcessBuilder pb = new ProcessBuilder(pargs);
+		pb.environment().putAll(EventDriver.getEnvironment());
+		pb.environment().put(IP_LOCATION, node.getClusterIp());
+		pb.environment().put(CLUSTER_ENV, env);
+		pb.environment().put(SCRIPT, script);
+		pb.environment().put(ARGS, argBuffer.toString());
+		pb.start();
+	}
 
-    public static void executeLocalScript(Node node, String script, List<String> args) throws IOException,
-            InterruptedException {
-        List<String> pargs = new ArrayList<String>();
-        pargs.add("/bin/bash");
-        pargs.add(script);
-        if (args != null) {
-            pargs.addAll(args);
-        }
-        ProcessBuilder pb = new ProcessBuilder(pargs);
-        pb.environment().putAll(EventDriver.getEnvironment());
-        pb.environment().put(IP_LOCATION, node.getClusterIp());
-        pb.start();
-    }
+	public static void executeLocalScript(Node node, String script,
+			List<String> args) throws IOException, InterruptedException {
+		List<String> pargs = new ArrayList<String>();
+		pargs.add("/bin/bash");
+		pargs.add(script);
+		if (args != null) {
+			pargs.addAll(args);
+		}
+		ProcessBuilder pb = new ProcessBuilder(pargs);
+		pb.environment().putAll(EventDriver.getEnvironment());
+		pb.environment().put(IP_LOCATION, node.getClusterIp());
+		pb.start();
+	}
 
-    public static List<String> getEventArgs(Pattern pattern) {
-        List<String> pargs = new ArrayList<String>();
-        if (pattern.getEvent().getPargs() == null) {
-            return pargs;
-        }
-        String[] args = pattern.getEvent().getPargs().split(" ");
-        for (String arg : args) {
-            pargs.add(arg.trim());
-        }
-        return pargs;
-    }
+	public static List<String> getEventArgs(Pattern pattern) {
+		List<String> pargs = new ArrayList<String>();
+		if (pattern.getEvent().getPargs() == null) {
+			return pargs;
+		}
+		String[] args = pattern.getEvent().getPargs().split(" ");
+		for (String arg : args) {
+			pargs.add(arg.trim());
+		}
+		return pargs;
+	}
 
 }
diff --git a/asterix-events/src/main/java/edu/uci/ics/asterix/event/management/EventrixClient.java b/asterix-events/src/main/java/edu/uci/ics/asterix/event/management/EventrixClient.java
index 52d46c8..6f4336d 100644
--- a/asterix-events/src/main/java/edu/uci/ics/asterix/event/management/EventrixClient.java
+++ b/asterix-events/src/main/java/edu/uci/ics/asterix/event/management/EventrixClient.java
@@ -156,23 +156,25 @@
         submit(patterns);
     }
 
-    private Patterns initPattern(String eventsDir) {
-        Nodeid nodeid = new Nodeid(new Value(null, EventDriver.CLIENT_NODE.getId()));
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        String workingDir = cluster.getWorkingDir().getDir();
-        String username = cluster.getUsername() == null ? System.getProperty("user.name") : cluster.getUsername();
-        patternList.add(getDirectoryTransferPattern(username, eventsDir, nodeid,
-                cluster.getMasterNode().getClusterIp(), workingDir));
+	private Patterns initPattern(String eventsDir) {
+		Nodeid nodeid = new Nodeid(new Value(null,
+				EventDriver.CLIENT_NODE.getId()));
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		String workingDir = cluster.getWorkingDir().getDir();
+		String username = cluster.getUsername() == null ? System
+				.getProperty("user.name") : cluster.getUsername();
+		patternList.add(getDirectoryTransferPattern(username, eventsDir,
+				nodeid, cluster.getMasterNode().getClusterIp(), workingDir));
 
-        if (!cluster.getWorkingDir().isNFS()) {
-            for (Node node : cluster.getNode()) {
-                patternList.add(getDirectoryTransferPattern(username, eventsDir, nodeid, node.getClusterIp(),
-                        workingDir));
-            }
-        }
-        Patterns patterns = new Patterns(patternList);
-        return patterns;
-    }
+		if (!cluster.getWorkingDir().isNFS()) {
+			for (Node node : cluster.getNode()) {
+				patternList.add(getDirectoryTransferPattern(username,
+						eventsDir, nodeid, node.getClusterIp(), workingDir));
+			}
+		}
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
     private Pattern getDirectoryTransferPattern(String username, String src, Nodeid srcNode, String destNodeIp,
             String destDir) {
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/CreateCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/CreateCommand.java
index 56cd345..fd0af04 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/CreateCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/CreateCommand.java
@@ -38,82 +38,95 @@
 
 public class CreateCommand extends AbstractCommand {
 
-    private String asterixInstanceName;
-    private Cluster cluster;
+	private String asterixInstanceName;
+	private Cluster cluster;
 
-    @Override
-    protected void execCommand() throws Exception {
-        InstallerDriver.initConfig();
-        ValidateCommand validateCommand = new ValidateCommand();
-        boolean valid = validateCommand.validateCluster(((CreateConfig) config).clusterPath);
-        if (!valid) {
-            throw new Exception("Cannot create an Asterix instance.");
-        }
-        asterixInstanceName = ((CreateConfig) config).name;
-        InstallerUtil.validateAsterixInstanceNotExists(asterixInstanceName);
-        CreateConfig createConfig = (CreateConfig) config;
-        JAXBContext ctx = JAXBContext.newInstance(Cluster.class);
-        Unmarshaller unmarshaller = ctx.createUnmarshaller();
-        cluster = (Cluster) unmarshaller.unmarshal(new File(createConfig.clusterPath));
-        AsterixInstance asterixInstance = InstallerUtil.createAsterixInstance(asterixInstanceName, cluster);
-        InstallerUtil.evaluateConflictWithOtherInstances(asterixInstance);
-        InstallerUtil.createAsterixZip(asterixInstance, true);
-        List<Property> clusterProperties = new ArrayList<Property>();
-        clusterProperties.add(new Property("ASTERIX_HOME", cluster.getWorkingDir().getDir() + File.separator
-                + "asterix"));
-        StringBuilder javaOpts = new StringBuilder();
-        if (cluster.getJavaOpts() != null) {
-            javaOpts.append(cluster.getJavaOpts());
-        }
-        clusterProperties.add(new Property("JAVA_OPTS", javaOpts.toString()));
-        clusterProperties.add(new Property("CLUSTER_NET_IP", cluster.getMasterNode().getClusterIp()));
-        clusterProperties.add(new Property("CLIENT_NET_IP", cluster.getMasterNode().getClusterIp()));
-        clusterProperties.add(new Property("LOG_DIR", cluster.getLogdir()));
-        clusterProperties.add(new Property("JAVA_HOME", cluster.getJavaHome()));
-        clusterProperties.add(new Property("WORKING_DIR", cluster.getWorkingDir().getDir()));
-        cluster.setEnv(new Env(clusterProperties));
+	@Override
+	protected void execCommand() throws Exception {
+		InstallerDriver.initConfig();
+		ValidateCommand validateCommand = new ValidateCommand();
+		boolean valid = validateCommand
+				.validateCluster(((CreateConfig) config).clusterPath);
+		if (!valid) {
+			throw new Exception("Cannot create an Asterix instance.");
+		}
+		asterixInstanceName = ((CreateConfig) config).name;
+		InstallerUtil.validateAsterixInstanceNotExists(asterixInstanceName);
+		CreateConfig createConfig = (CreateConfig) config;
+		JAXBContext ctx = JAXBContext.newInstance(Cluster.class);
+		Unmarshaller unmarshaller = ctx.createUnmarshaller();
+		cluster = (Cluster) unmarshaller.unmarshal(new File(
+				createConfig.clusterPath));
+		AsterixInstance asterixInstance = InstallerUtil.createAsterixInstance(
+				asterixInstanceName, cluster);
+		InstallerUtil.evaluateConflictWithOtherInstances(asterixInstance);
+		InstallerUtil.createAsterixZip(asterixInstance, true);
+		List<Property> clusterProperties = new ArrayList<Property>();
+		clusterProperties.add(new Property("ASTERIX_HOME", cluster
+				.getWorkingDir().getDir() + File.separator + "asterix"));
+		StringBuilder javaOpts = new StringBuilder();
+		if (cluster.getJavaOpts() != null) {
+			javaOpts.append(cluster.getJavaOpts());
+		}
+		clusterProperties.add(new Property("JAVA_OPTS", javaOpts.toString()));
+		clusterProperties.add(new Property("CLUSTER_NET_IP", cluster
+				.getMasterNode().getClusterIp()));
+		clusterProperties.add(new Property("CLIENT_NET_IP", cluster
+				.getMasterNode().getClientIp()));
+		clusterProperties.add(new Property("LOG_DIR", cluster.getLogdir()));
+		clusterProperties.add(new Property("JAVA_HOME", cluster.getJavaHome()));
+		clusterProperties.add(new Property("WORKING_DIR", cluster
+				.getWorkingDir().getDir()));
+		cluster.setEnv(new Env(clusterProperties));
 
-        PatternCreator pc = new PatternCreator();
-        Patterns patterns = pc.getStartAsterixPattern(asterixInstanceName, cluster);
-        InstallerUtil.getEventrixClient(cluster).submit(patterns);
+		PatternCreator pc = new PatternCreator();
+		Patterns patterns = pc.getStartAsterixPattern(asterixInstanceName,
+				cluster);
+		InstallerUtil.getEventrixClient(cluster).submit(patterns);
 
-        AsterixRuntimeState runtimeState = VerificationUtil.getAsterixRuntimeState(asterixInstance);
-        VerificationUtil.updateInstanceWithRuntimeDescription(asterixInstance, runtimeState, true);
-        ServiceProvider.INSTANCE.getLookupService().writeAsterixInstance(asterixInstance);
-        InstallerUtil.deleteDirectory(InstallerDriver.getManagixHome() + File.separator + InstallerDriver.ASTERIX_DIR
-                + File.separator + asterixInstanceName);
-        LOGGER.info(asterixInstance.getDescription(false));
-    }
+		AsterixRuntimeState runtimeState = VerificationUtil
+				.getAsterixRuntimeState(asterixInstance);
+		VerificationUtil.updateInstanceWithRuntimeDescription(asterixInstance,
+				runtimeState, true);
+		ServiceProvider.INSTANCE.getLookupService().writeAsterixInstance(
+				asterixInstance);
+		InstallerUtil.deleteDirectory(InstallerDriver.getManagixHome()
+				+ File.separator + InstallerDriver.ASTERIX_DIR + File.separator
+				+ asterixInstanceName);
+		LOGGER.info(asterixInstance.getDescription(false));
+	}
 
-    @Override
-    protected CommandConfig getCommandConfig() {
-        return new CreateConfig();
-    }
+	@Override
+	protected CommandConfig getCommandConfig() {
+		return new CreateConfig();
+	}
 
-    public Cluster getCluster() {
-        return cluster;
-    }
+	public Cluster getCluster() {
+		return cluster;
+	}
 
-    public String getAsterixInstanceName() {
-        return asterixInstanceName;
-    }
+	public String getAsterixInstanceName() {
+		return asterixInstanceName;
+	}
 
-    @Override
-    protected String getUsageDescription() {
-        return "\nCreates an ASTERIX instance with a specified name."
-                + "\n\nPost creation, the instance is in ACTIVE state, indicating its "
-                + "\navailability for executing statements/queries." + "\n\nUsage arguments/options:"
-                + "\n-n Name of the ASTERIX instance." + "\n-c Path to the cluster configuration file";
-    }
+	@Override
+	protected String getUsageDescription() {
+		return "\nCreates an ASTERIX instance with a specified name."
+				+ "\n\nPost creation, the instance is in ACTIVE state, indicating its "
+				+ "\navailability for executing statements/queries."
+				+ "\n\nUsage arguments/options:"
+				+ "\n-n Name of the ASTERIX instance."
+				+ "\n-c Path to the cluster configuration file";
+	}
 
 }
 
 class CreateConfig extends CommandConfig {
 
-    @Option(name = "-n", required = true, usage = "Name of Asterix Instance")
-    public String name;
+	@Option(name = "-n", required = true, usage = "Name of Asterix Instance")
+	public String name;
 
-    @Option(name = "-c", required = true, usage = "Path to cluster configuration")
-    public String clusterPath;
+	@Option(name = "-c", required = true, usage = "Path to cluster configuration")
+	public String clusterPath;
 
 }
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/ValidateCommand.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/ValidateCommand.java
index 1abeb0e..3d292a9 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/ValidateCommand.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/ValidateCommand.java
@@ -29,213 +29,239 @@
 import edu.uci.ics.asterix.event.schema.cluster.Cluster;
 import edu.uci.ics.asterix.event.schema.cluster.MasterNode;
 import edu.uci.ics.asterix.event.schema.cluster.Node;
-import edu.uci.ics.asterix.event.schema.pattern.Patterns;
 import edu.uci.ics.asterix.installer.driver.InstallerDriver;
-import edu.uci.ics.asterix.installer.driver.InstallerUtil;
-import edu.uci.ics.asterix.installer.events.PatternCreator;
 import edu.uci.ics.asterix.installer.schema.conf.Configuration;
 import edu.uci.ics.asterix.installer.schema.conf.Zookeeper;
 
 public class ValidateCommand extends AbstractCommand {
 
-    private static final String OK = " [" + "\u2713" + "]";
-    private static final String ERROR = " [" + "x" + "]";
-    private static final String WARNING = " [" + "!" + "]";
+	private static final String OK = " [" + "OK" + "]";
+	private static final String ERROR = " [" + "ERROR" + "]";
+	private static final String WARNING = " [" + "WARNING" + "]";
 
-    @Override
-    protected void execCommand() throws Exception {
-        ValidateConfig vConfig = (ValidateConfig) config;
-        logValidationResult("Environment", validateEnvironment());
-        if (((ValidateConfig) config).cluster != null) {
-            logValidationResult("Cluster configuration", validateCluster(vConfig.cluster));
-        } else {
-            logValidationResult("Installer Configuration", validateConfiguration());
-        }
-    }
+	@Override
+	protected void execCommand() throws Exception {
+		ValidateConfig vConfig = (ValidateConfig) config;
+		logValidationResult("Environment", validateEnvironment());
+		if (((ValidateConfig) config).cluster != null) {
+			logValidationResult("Cluster configuration",
+					validateCluster(vConfig.cluster));
+		} else {
+			logValidationResult("Installer Configuration",
+					validateConfiguration());
+		}
+	}
 
-    private void logValidationResult(String prefix, boolean isValid) {
-        if (!isValid) {
-            LOGGER.fatal(prefix + ERROR);
-        } else {
-            LOGGER.info(prefix + OK);
-        }
-    }
+	private void logValidationResult(String prefix, boolean isValid) {
+		if (!isValid) {
+			LOGGER.fatal(prefix + ERROR);
+		} else {
+			LOGGER.info(prefix + OK);
+		}
+	}
 
-    @Override
-    protected CommandConfig getCommandConfig() {
-        return new ValidateConfig();
-    }
+	@Override
+	protected CommandConfig getCommandConfig() {
+		return new ValidateConfig();
+	}
 
-    @Override
-    protected String getUsageDescription() {
-        return "\nValidate the installer's configuration or a cluster configuration" + "\nUsage"
-                + "\nFor validating the installer configuration" + "\nuse managix validate"
-                + "\n\nFor validating a cluster configuration"
-                + "\nuse managix validate -c <path to the cluster configuration file>";
-    }
+	@Override
+	protected String getUsageDescription() {
+		return "\nValidate the installer's configuration or a cluster configuration"
+				+ "\nUsage"
+				+ "\nFor validating the installer configuration"
+				+ "\nuse managix validate"
+				+ "\n\nFor validating a cluster configuration"
+				+ "\nuse managix validate -c <path to the cluster configuration file>";
+	}
 
-    public boolean validateEnvironment() throws Exception {
-        boolean valid = true;
-        String managixHome = System.getenv(InstallerDriver.ENV_MANAGIX_HOME);
-        if (managixHome == null) {
-            valid = false;
-            LOGGER.fatal(InstallerDriver.ENV_MANAGIX_HOME + " not set " + ERROR);
-        } else {
-            File home = new File(managixHome);
-            if (!home.exists()) {
-                valid = false;
-                LOGGER.fatal(InstallerDriver.ENV_MANAGIX_HOME + ": " + home.getAbsolutePath() + " does not exist!"
-                        + ERROR);
-            }
-        }
-        return valid;
+	public boolean validateEnvironment() throws Exception {
+		boolean valid = true;
+		String managixHome = System.getenv(InstallerDriver.ENV_MANAGIX_HOME);
+		if (managixHome == null) {
+			valid = false;
+			LOGGER.fatal(InstallerDriver.ENV_MANAGIX_HOME + " not set " + ERROR);
+		} else {
+			File home = new File(managixHome);
+			if (!home.exists()) {
+				valid = false;
+				LOGGER.fatal(InstallerDriver.ENV_MANAGIX_HOME + ": "
+						+ home.getAbsolutePath() + " does not exist!" + ERROR);
+			}
+		}
+		return valid;
 
-    }
+	}
 
-    public boolean validateCluster(String clusterPath) throws Exception {
-        boolean valid = true;
-        Cluster cluster = null;
-        File f = new File(clusterPath);
-        if (!f.exists() || !f.isFile()) {
-            LOGGER.error(" Invalid path " + f.getAbsolutePath() + ERROR);
-            valid = false;
-        } else {
-            JAXBContext ctx = JAXBContext.newInstance(Cluster.class);
-            Unmarshaller unmarshaller = ctx.createUnmarshaller();
-            cluster = (Cluster) unmarshaller.unmarshal(new File(clusterPath));
-            validateClusterProperties(cluster);
+	public boolean validateCluster(String clusterPath) throws Exception {
+		boolean valid = true;
+		Cluster cluster = null;
+		File f = new File(clusterPath);
+		if (!f.exists() || !f.isFile()) {
+			LOGGER.error(" Invalid path " + f.getAbsolutePath() + ERROR);
+			valid = false;
+		} else {
+			JAXBContext ctx = JAXBContext.newInstance(Cluster.class);
+			Unmarshaller unmarshaller = ctx.createUnmarshaller();
+			cluster = (Cluster) unmarshaller.unmarshal(new File(clusterPath));
+			validateClusterProperties(cluster);
 
-            Set<String> servers = new HashSet<String>();
-            Set<String> serverIds = new HashSet<String>();
-            servers.add(cluster.getMasterNode().getClusterIp());
-            serverIds.add(cluster.getMasterNode().getId());
+			Set<String> servers = new HashSet<String>();
+			Set<String> serverIds = new HashSet<String>();
+			servers.add(cluster.getMasterNode().getClusterIp());
+			serverIds.add(cluster.getMasterNode().getId());
 
-            MasterNode masterNode = cluster.getMasterNode();
-            Node master = new Node(masterNode.getId(), masterNode.getClusterIp(), masterNode.getJavaOpts(),
-                    masterNode.getJavaHome(), masterNode.getLogdir(), null, null, null);
+			MasterNode masterNode = cluster.getMasterNode();
+			Node master = new Node(masterNode.getId(),
+					masterNode.getClusterIp(), masterNode.getJavaOpts(),
+					masterNode.getJavaHome(), masterNode.getLogdir(), null,
+					null, null);
 
-            valid = valid & validateNodeConfiguration(master, cluster);
+			valid = valid & validateNodeConfiguration(master, cluster);
 
-            for (Node node : cluster.getNode()) {
-                servers.add(node.getClusterIp());
-                if (serverIds.contains(node.getId())) {
-                    valid = false;
-                    LOGGER.error("Duplicate node id :" + node.getId() + ERROR);
-                } else {
-                    valid = valid & validateNodeConfiguration(node, cluster);
-                }
-            }
-        }
+			for (Node node : cluster.getNode()) {
+				servers.add(node.getClusterIp());
+				if (serverIds.contains(node.getId())) {
+					valid = false;
+					LOGGER.error("Duplicate node id :" + node.getId() + ERROR);
+				} else {
+					valid = valid & validateNodeConfiguration(node, cluster);
+				}
+			}
+		}
 
-        return valid;
-    }
+		return valid;
+	}
 
-    private void validateClusterProperties(Cluster cluster) {
-        List<String> tempDirs = new ArrayList<String>();
-        if (cluster.getLogdir() != null && checkTemporaryPath(cluster.getLogdir())) {
-            tempDirs.add("Log directory: " + cluster.getLogdir());
-        }
-        if (cluster.getStore() != null && checkTemporaryPath(cluster.getStore())) {
-            tempDirs.add("Store directory: " + cluster.getStore());
-        }
+	private void validateClusterProperties(Cluster cluster) {
+		List<String> tempDirs = new ArrayList<String>();
+		if (cluster.getLogdir() != null
+				&& checkTemporaryPath(cluster.getLogdir())) {
+			tempDirs.add("Log directory: " + cluster.getLogdir());
+		}
+		if (cluster.getIodevices() != null
+				&& checkTemporaryPath(cluster.getIodevices())) {
+			tempDirs.add("IO Device: " + cluster.getIodevices());
+		}
 
-        if (tempDirs.size() > 0) {
-            StringBuffer msg = new StringBuffer();
-            msg.append("The following paths are subject to be cleaned up by OS");
-            for (String tempDir : tempDirs) {
-                msg.append("\n" + tempDir + WARNING);
-            }
-            LOGGER.warn(msg);
-        }
+		if (tempDirs.size() > 0) {
+			StringBuffer msg = new StringBuffer();
+			msg.append("The following paths are subject to be cleaned up by OS");
+			for (String tempDir : tempDirs) {
+				msg.append("\n" + tempDir + WARNING);
+			}
+			LOGGER.warn(msg);
+		}
 
-    }
+	}
 
-    private boolean validateNodeConfiguration(Node node, Cluster cluster) {
-        boolean valid = true;
-        valid = checkNodeReachability(node.getClusterIp());
-        if (node.getJavaHome() == null || node.getJavaHome().length() == 0) {
-            if (cluster.getJavaHome() == null || cluster.getJavaHome().length() == 0) {
-                valid = false;
-                LOGGER.fatal("java_home not defined at cluster/node level for node: " + node.getId() + ERROR);
-            }
-        }
+	private boolean validateNodeConfiguration(Node node, Cluster cluster) {
+		boolean valid = true;
+		valid = checkNodeReachability(node.getClusterIp());
+		if (node.getJavaHome() == null || node.getJavaHome().length() == 0) {
+			if (cluster.getJavaHome() == null
+					|| cluster.getJavaHome().length() == 0) {
+				valid = false;
+				LOGGER.fatal("java_home not defined at cluster/node level for node: "
+						+ node.getId() + ERROR);
+			}
+		}
 
-        if (node.getLogdir() == null || node.getLogdir().length() == 0) {
-            if (cluster.getLogdir() == null || cluster.getLogdir().length() == 0) {
-                valid = false;
-                LOGGER.fatal("log_dir not defined at cluster/node level for node: " + node.getId() + ERROR);
-            }
-        }
+		if (node.getLogdir() == null || node.getLogdir().length() == 0) {
+			if (cluster.getLogdir() == null
+					|| cluster.getLogdir().length() == 0) {
+				valid = false;
+				LOGGER.fatal("log_dir not defined at cluster/node level for node: "
+						+ node.getId() + ERROR);
+			}
+		}
 
-        if (node.getStore() == null || cluster.getStore().length() == 0) {
-            if (cluster.getMasterNode().getId().equals(node.getId())
-                    && (cluster.getStore() == null || cluster.getStore().length() == 0)) {
-                valid = false;
-                LOGGER.fatal("store not defined at cluster/node level for node: " + node.getId() + ERROR);
-            }
-        }
+		if (node.getStore() == null || node.getStore().length() == 0) {
+			if (!cluster.getMasterNode().getId().equals(node.getId())
+					&& (cluster.getStore() == null || cluster.getStore()
+							.length() == 0)) {
+				valid = false;
+				LOGGER.fatal("store not defined at cluster/node level for node: "
+						+ node.getId() + ERROR);
+			}
+		}
 
-        return valid;
-    }
+		if (node.getIodevices() == null || node.getIodevices().length() == 0) {
+			if (!cluster.getMasterNode().getId().equals(node.getId())
+					&& (cluster.getIodevices() == null || cluster
+							.getIodevices().length() == 0)) {
+				valid = false;
+				LOGGER.fatal("iodevice(s) not defined at cluster/node level for node: "
+						+ node.getId() + ERROR);
+			}
+		}
 
-    private boolean checkTemporaryPath(String logdir) {
-        return logdir.startsWith("/tmp/");
+		return valid;
+	}
 
-    }
+	private boolean checkTemporaryPath(String logdir) {
+		return logdir.startsWith("/tmp/");
 
-    public boolean validateConfiguration() throws Exception {
-        String managixHome = System.getenv(InstallerDriver.ENV_MANAGIX_HOME);
-        File configFile = new File(managixHome + File.separator + InstallerDriver.MANAGIX_CONF_XML);
-        JAXBContext configCtx = JAXBContext.newInstance(Configuration.class);
-        Unmarshaller unmarshaller = configCtx.createUnmarshaller();
-        Configuration conf = (Configuration) unmarshaller.unmarshal(configFile);
-        return validateZookeeperConfiguration(conf);
-    }
+	}
 
-    private boolean validateZookeeperConfiguration(Configuration conf) throws Exception {
-        boolean valid = true;
-        Zookeeper zk = conf.getZookeeper();
+	public boolean validateConfiguration() throws Exception {
+		String managixHome = System.getenv(InstallerDriver.ENV_MANAGIX_HOME);
+		File configFile = new File(managixHome + File.separator
+				+ InstallerDriver.MANAGIX_CONF_XML);
+		JAXBContext configCtx = JAXBContext.newInstance(Configuration.class);
+		Unmarshaller unmarshaller = configCtx.createUnmarshaller();
+		Configuration conf = (Configuration) unmarshaller.unmarshal(configFile);
+		return validateZookeeperConfiguration(conf);
+	}
 
-        if (zk.getHomeDir() == null || zk.getHomeDir().length() == 0) {
-            valid = false;
-            LOGGER.fatal("Zookeeper home dir not configured" + ERROR);
-        } else if (checkTemporaryPath(zk.getHomeDir())) {
-            LOGGER.warn("Zookeeper home dir is subject to be cleaned up by OS" + WARNING);
-        }
+	private boolean validateZookeeperConfiguration(Configuration conf)
+			throws Exception {
+		boolean valid = true;
+		Zookeeper zk = conf.getZookeeper();
 
-        if (zk.getServers().getServer().isEmpty()) {
-            valid = false;
-            LOGGER.fatal("Zookeeper servers not configured" + ERROR);
-        }
+		if (zk.getHomeDir() == null || zk.getHomeDir().length() == 0) {
+			valid = false;
+			LOGGER.fatal("Zookeeper home dir not configured" + ERROR);
+		} else if (checkTemporaryPath(zk.getHomeDir())) {
+			LOGGER.warn("Zookeeper home dir is subject to be cleaned up by OS"
+					+ WARNING);
+		}
 
-        boolean validEnsemble = true;
-        for (String server : zk.getServers().getServer()) {
-            validEnsemble = validEnsemble && checkNodeReachability(server);
-        }
+		if (zk.getServers().getServer().isEmpty()) {
+			valid = false;
+			LOGGER.fatal("Zookeeper servers not configured" + ERROR);
+		}
 
-        return valid;
-    }
+		boolean validEnsemble = true;
+		for (String server : zk.getServers().getServer()) {
+			validEnsemble = validEnsemble && checkNodeReachability(server);
+		}
 
-    private boolean checkNodeReachability(String server) {
-        boolean reachable = true;
-        try {
-            InetAddress address = InetAddress.getByName(server);
-            if (!address.isReachable(1000)) {
-                LOGGER.fatal("\n" + "Server: " + server + " unreachable" + ERROR);
-                reachable = false;
-            }
-        } catch (Exception e) {
-            reachable = false;
-            LOGGER.fatal("\n" + "Server: " + server + " Invalid address" + ERROR);
-        }
-        return reachable;
-    }
+		return valid;
+	}
+
+	private boolean checkNodeReachability(String server) {
+		boolean reachable = true;
+		try {
+			InetAddress address = InetAddress.getByName(server);
+			if (!address.isReachable(1000)) {
+				LOGGER.fatal("\n" + "Server: " + server + " unreachable"
+						+ ERROR);
+				reachable = false;
+			}
+		} catch (Exception e) {
+			reachable = false;
+			LOGGER.fatal("\n" + "Server: " + server + " Invalid address"
+					+ ERROR);
+		}
+		return reachable;
+	}
 
 }
 
 class ValidateConfig extends CommandConfig {
 
-    @Option(name = "-c", required = false, usage = "Path to the cluster configuration xml")
-    public String cluster;
+	@Option(name = "-c", required = false, usage = "Path to the cluster configuration xml")
+	public String cluster;
 
 }
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/driver/InstallerDriver.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/driver/InstallerDriver.java
index 3164bd7..8083427 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/driver/InstallerDriver.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/driver/InstallerDriver.java
@@ -30,109 +30,133 @@
 
 public class InstallerDriver {
 
-    public static final String MANAGIX_INTERNAL_DIR = ".installer";
-    public static final String MANAGIX_EVENT_DIR = MANAGIX_INTERNAL_DIR + File.separator + "eventrix";
-    public static final String MANAGIX_EVENT_SCRIPTS_DIR = MANAGIX_INTERNAL_DIR + File.separator + "eventrix"
-            + File.separator + "scripts";
-    public static final String ASTERIX_DIR = "asterix";
-    public static final String EVENTS_DIR = "events";
+	public static final String MANAGIX_INTERNAL_DIR = ".installer";
+	public static final String MANAGIX_EVENT_DIR = MANAGIX_INTERNAL_DIR
+			+ File.separator + "eventrix";
+	public static final String MANAGIX_EVENT_SCRIPTS_DIR = MANAGIX_INTERNAL_DIR
+			+ File.separator + "eventrix" + File.separator + "scripts";
+	public static final String ASTERIX_DIR = "asterix";
+	public static final String EVENTS_DIR = "events";
 
-    private static final Logger LOGGER = Logger.getLogger(InstallerDriver.class.getName());
-    public static final String ENV_MANAGIX_HOME = "MANAGIX_HOME";
-    public static final String MANAGIX_CONF_XML = "conf" + File.separator + "managix-conf.xml";
+	private static final Logger LOGGER = Logger.getLogger(InstallerDriver.class
+			.getName());
+	public static final String ENV_MANAGIX_HOME = "MANAGIX_HOME";
+	public static final String MANAGIX_CONF_XML = "conf" + File.separator
+			+ "managix-conf.xml";
 
-    private static Configuration conf;
-    private static String managixHome;
-    private static String asterixZip;
+	private static Configuration conf;
+	private static String managixHome;
+	private static String asterixZip;
 
-    public static String getAsterixZip() {
-        return asterixZip;
-    }
+	public static String getAsterixZip() {
+		return asterixZip;
+	}
 
-    public static Configuration getConfiguration() {
-        return conf;
-    }
+	public static Configuration getConfiguration() {
+		return conf;
+	}
 
-    public static void initConfig() throws Exception {
-        File configFile = new File(managixHome + File.separator + MANAGIX_CONF_XML);
-        JAXBContext configCtx = JAXBContext.newInstance(Configuration.class);
-        Unmarshaller unmarshaller = configCtx.createUnmarshaller();
-        conf = (Configuration) unmarshaller.unmarshal(configFile);
-        asterixZip = initBinary("asterix-server");
+	public static void initConfig() throws Exception {
+		File configFile = new File(managixHome + File.separator
+				+ MANAGIX_CONF_XML);
+		JAXBContext configCtx = JAXBContext.newInstance(Configuration.class);
+		Unmarshaller unmarshaller = configCtx.createUnmarshaller();
+		conf = (Configuration) unmarshaller.unmarshal(configFile);
+		asterixZip = initBinary("asterix-server");
 
-        ILookupService lookupService = ServiceProvider.INSTANCE.getLookupService();
-        if (!lookupService.isRunning(conf)) {
-            lookupService.startService(conf);
-        }
-    }
+		ILookupService lookupService = ServiceProvider.INSTANCE
+				.getLookupService();
+		if (!lookupService.isRunning(conf)) {
+			lookupService.startService(conf);
+		}
+	}
 
-    private static String initBinary(final String fileNamePattern) {
-        String asterixDir = InstallerDriver.getAsterixDir();
-        File file = new File(asterixDir);
-        File[] zipFiles = file.listFiles(new FileFilter() {
-            public boolean accept(File arg0) {
-                return arg0.getAbsolutePath().contains(fileNamePattern) && arg0.isFile();
-            }
-        });
-        if (zipFiles.length == 0) {
-            String msg = " Binary not found at " + asterixDir;
-            LOGGER.log(Level.FATAL, msg);
-            throw new IllegalStateException(msg);
-        }
-        if (zipFiles.length > 1) {
-            String msg = " Multiple binaries found at " + asterixDir;
-            LOGGER.log(Level.FATAL, msg);
-            throw new IllegalStateException(msg);
-        }
+	private static String initBinary(final String fileNamePattern) {
+		String asterixDir = InstallerDriver.getAsterixDir();
+		File file = new File(asterixDir);
+		File[] zipFiles = file.listFiles(new FileFilter() {
+			public boolean accept(File arg0) {
+				return arg0.getAbsolutePath().contains(fileNamePattern)
+						&& arg0.isFile();
+			}
+		});
+		if (zipFiles.length == 0) {
+			String msg = " Binary not found at " + asterixDir;
+			LOGGER.log(Level.FATAL, msg);
+			throw new IllegalStateException(msg);
+		}
+		if (zipFiles.length > 1) {
+			String msg = " Multiple binaries found at " + asterixDir;
+			LOGGER.log(Level.FATAL, msg);
+			throw new IllegalStateException(msg);
+		}
 
-        return zipFiles[0].getAbsolutePath();
-    }
+		return zipFiles[0].getAbsolutePath();
+	}
 
-    public static String getManagixHome() {
-        return managixHome;
-    }
+	public static String getManagixHome() {
+		return managixHome;
+	}
 
-    public static String getAsterixDir() {
-        return managixHome + File.separator + ASTERIX_DIR;
-    }
+	public static String getAsterixDir() {
+		return managixHome + File.separator + ASTERIX_DIR;
+	}
 
-    public static void main(String args[]) {
-        try {
-            if (args.length != 0) {
-                managixHome = System.getenv(ENV_MANAGIX_HOME);
-                CommandHandler cmdHandler = new CommandHandler();
-                cmdHandler.processCommand(args);
-            } else {
-                printUsage();
-            }
-        } catch (IllegalArgumentException iae) {
-            LOGGER.error("Unknown command");
-            printUsage();
-        } catch (Exception e) {
-            LOGGER.error(e.getMessage());
-        }
-    }
+	public static void main(String args[]) {
+		try {
+			if (args.length != 0) {
+				managixHome = System.getenv(ENV_MANAGIX_HOME);
+				CommandHandler cmdHandler = new CommandHandler();
+				cmdHandler.processCommand(args);
+			} else {
+				printUsage();
+			}
+		} catch (IllegalArgumentException iae) {
+			LOGGER.error("Unknown command");
+			printUsage();
+		} catch (Exception e) {
+			LOGGER.error(e.getMessage());
+			if (e.getMessage() == null || e.getMessage().length() == 0) {
+				e.printStackTrace();
+			}
+		}
+	}
 
-    private static void printUsage() {
-        StringBuffer buffer = new StringBuffer("managix <command> <options>" + "\n");
-        buffer.append("Commands" + "\n");
-        buffer.append("create   " + ":" + " Creates a new asterix instance" + "\n");
-        buffer.append("delete   " + ":" + " Deletes an asterix instance" + "\n");
-        buffer.append("start    " + ":" + " Starts an  asterix instance" + "\n");
-        buffer.append("stop     " + ":" + " Stops an asterix instance that is in ACTIVE state" + "\n");
-        buffer.append("backup   " + ":" + " Creates a back up for an existing asterix instance" + "\n");
-        buffer.append("restore  " + ":" + " Restores an asterix instance" + "\n");
-        buffer.append("describe " + ":" + " Describes an existing asterix instance" + "\n");
-        buffer.append("validate " + ":" + " Validates the installer/cluster configuration" + "\n");
-        buffer.append("configure" + ":" + " Auto-generate configuration for local psedu-distributed Asterix instance"
-                + "\n");
-        buffer.append("shutdown " + ":" + " Shutdown the installer service" + "\n");
-        buffer.append("validate " + ":" + " Validates the installer/cluster configuration" + "\n");
-        buffer.append("configure" + ":" + " Auto-generate configuration for local psedu-distributed Asterix instance"
-                + "\n");
-        buffer.append("shutdown " + ":" + " Shutdown the installer service" + "\n");
-        buffer.append("help     " + ":" + " Provides usage description of a command" + "\n");
+	private static void printUsage() {
+		StringBuffer buffer = new StringBuffer("managix <command> <options>"
+				+ "\n");
+		buffer.append("Commands" + "\n");
+		buffer.append("create   " + ":" + " Creates a new asterix instance"
+				+ "\n");
+		buffer.append("delete   " + ":" + " Deletes an asterix instance" + "\n");
+		buffer.append("start    " + ":" + " Starts an  asterix instance" + "\n");
+		buffer.append("stop     " + ":"
+				+ " Stops an asterix instance that is in ACTIVE state" + "\n");
+		buffer.append("backup   " + ":"
+				+ " Creates a back up for an existing asterix instance" + "\n");
+		buffer.append("restore  " + ":" + " Restores an asterix instance"
+				+ "\n");
+		buffer.append("describe " + ":"
+				+ " Describes an existing asterix instance" + "\n");
+		buffer.append("validate " + ":"
+				+ " Validates the installer/cluster configuration" + "\n");
+		buffer.append("configure"
+				+ ":"
+				+ " Auto-generate configuration for local psedu-distributed Asterix instance"
+				+ "\n");
+		buffer.append("shutdown " + ":" + " Shutdown the installer service"
+				+ "\n");
+		buffer.append("validate " + ":"
+				+ " Validates the installer/cluster configuration" + "\n");
+		buffer.append("configure"
+				+ ":"
+				+ " Auto-generate configuration for local psedu-distributed Asterix instance"
+				+ "\n");
+		buffer.append("shutdown " + ":" + " Shutdown the installer service"
+				+ "\n");
+		buffer.append("help     " + ":"
+				+ " Provides usage description of a command" + "\n");
 
-        LOGGER.info(buffer.toString());
-    }
+		LOGGER.info(buffer.toString());
+	}
 }
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/error/VerificationUtil.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/error/VerificationUtil.java
index 612c2e4..05a92f2 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/error/VerificationUtil.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/error/VerificationUtil.java
@@ -29,99 +29,110 @@
 
 public class VerificationUtil {
 
-    private static final String VERIFY_SCRIPT_PATH = InstallerDriver.getManagixHome() + File.separator
-            + InstallerDriver.MANAGIX_INTERNAL_DIR + File.separator + "scripts" + File.separator + "verify.sh";
+	private static final String VERIFY_SCRIPT_PATH = InstallerDriver
+			.getManagixHome()
+			+ File.separator
+			+ InstallerDriver.MANAGIX_INTERNAL_DIR
+			+ File.separator
+			+ "scripts"
+			+ File.separator + "verify.sh";
 
-    public static AsterixRuntimeState getAsterixRuntimeState(AsterixInstance instance) throws Exception {
+	public static AsterixRuntimeState getAsterixRuntimeState(
+			AsterixInstance instance) throws Exception {
 
-        Cluster cluster = instance.getCluster();
-        List<String> args = new ArrayList<String>();
-        args.add(instance.getName());
-        args.add(instance.getCluster().getMasterNode().getClusterIp());
-        for (Node node : cluster.getNode()) {
-            args.add(node.getClusterIp());
-            args.add(instance.getName() + "_" + node.getId());
-        }
+		Cluster cluster = instance.getCluster();
+		List<String> args = new ArrayList<String>();
+		args.add(instance.getName());
+		args.add(instance.getCluster().getMasterNode().getClusterIp());
+		for (Node node : cluster.getNode()) {
+			args.add(node.getClusterIp());
+			args.add(instance.getName() + "_" + node.getId());
+		}
 
-        String output = InstallerUtil.executeLocalScript(VERIFY_SCRIPT_PATH, args);
-        boolean ccRunning = true;
-        List<String> failedNCs = new ArrayList<String>();
-        String[] infoFields;
-        ProcessInfo pInfo;
-        List<ProcessInfo> processes = new ArrayList<ProcessInfo>();
+		String output = InstallerUtil.executeLocalScript(VERIFY_SCRIPT_PATH,
+				args);
+		boolean ccRunning = true;
+		List<String> failedNCs = new ArrayList<String>();
+		String[] infoFields;
+		ProcessInfo pInfo;
+		List<ProcessInfo> processes = new ArrayList<ProcessInfo>();
 
-        for (String line : output.split("\n")) {
-            String nodeid = null;
-            infoFields = line.split(":");
-            try {
-                int pid = Integer.parseInt(infoFields[3]);
-                if (infoFields[0].equals("NC")) {
-                    nodeid = infoFields[2].split("_")[1];
-                } else {
-                    nodeid = instance.getCluster().getMasterNode().getId();
-                }
-                pInfo = new ProcessInfo(infoFields[0], infoFields[1], nodeid, pid);
-                processes.add(pInfo);
-            } catch (Exception e) {
-                if (infoFields[0].equalsIgnoreCase("CC")) {
-                    ccRunning = false;
-                } else {
-                    failedNCs.add(infoFields[1]);
-                }
-            }
-        }
-        return new AsterixRuntimeState(processes, failedNCs, ccRunning);
-    }
+		for (String line : output.split("\n")) {
+			String nodeid = null;
+			infoFields = line.split(":");
+			try {
+				int pid = Integer.parseInt(infoFields[3]);
+				if (infoFields[0].equals("NC")) {
+					nodeid = infoFields[2].split("_")[1];
+				} else {
+					nodeid = instance.getCluster().getMasterNode().getId();
+				}
+				pInfo = new ProcessInfo(infoFields[0], infoFields[1], nodeid,
+						pid);
+				processes.add(pInfo);
+			} catch (Exception e) {
+				if (infoFields[0].equalsIgnoreCase("CC")) {
+					ccRunning = false;
+				} else {
+					failedNCs.add(infoFields[1]);
+				}
+			}
+		}
+		return new AsterixRuntimeState(processes, failedNCs, ccRunning);
+	}
 
-    public static void updateInstanceWithRuntimeDescription(AsterixInstance instance, AsterixRuntimeState state,
-            boolean expectedRunning) {
-        StringBuffer summary = new StringBuffer();
-        if (expectedRunning) {
-            if (!state.isCcRunning()) {
-                summary.append("Cluster Controller not running at "
-                        + instance.getCluster().getMasterNode().getClusterIp() + "\n");
-                instance.setState(State.UNUSABLE);
-            }
-            if (state.getFailedNCs() != null && !state.getFailedNCs().isEmpty()) {
-                summary.append("Node Controller not running at the following nodes" + "\n");
-                for (String failedNC : state.getFailedNCs()) {
-                    summary.append(failedNC + "\n");
-                }
-                instance.setState(State.UNUSABLE);
-            }
-            if (!(instance.getState().equals(State.UNUSABLE))) {
-                instance.setState(State.ACTIVE);
-            }
-        } else {
-            if (state.getProcesses() != null && state.getProcesses().size() > 0) {
-                summary.append("Following process still running " + "\n");
-                for (ProcessInfo pInfo : state.getProcesses()) {
-                    summary.append(pInfo + "\n");
-                }
-                instance.setState(State.UNUSABLE);
-            } else {
-                instance.setState(State.INACTIVE);
-            }
-        }
-        state.setSummary(summary.toString());
-        instance.setAsterixRuntimeStates(state);
-    }
+	public static void updateInstanceWithRuntimeDescription(
+			AsterixInstance instance, AsterixRuntimeState state,
+			boolean expectedRunning) {
+		StringBuffer summary = new StringBuffer();
+		if (expectedRunning) {
+			if (!state.isCcRunning()) {
+				summary.append("Cluster Controller not running at "
+						+ instance.getCluster().getMasterNode().getId() + "\n");
+				instance.setState(State.UNUSABLE);
+			}
+			if (state.getFailedNCs() != null && !state.getFailedNCs().isEmpty()) {
+				summary.append("Node Controller not running at the following nodes"
+						+ "\n");
+				for (String failedNC : state.getFailedNCs()) {
+					summary.append(failedNC + "\n");
+				}
+				instance.setState(State.UNUSABLE);
+			}
+			if (!(instance.getState().equals(State.UNUSABLE))) {
+				instance.setState(State.ACTIVE);
+			}
+		} else {
+			if (state.getProcesses() != null && state.getProcesses().size() > 0) {
+				summary.append("Following process still running " + "\n");
+				for (ProcessInfo pInfo : state.getProcesses()) {
+					summary.append(pInfo + "\n");
+				}
+				instance.setState(State.UNUSABLE);
+			} else {
+				instance.setState(State.INACTIVE);
+			}
+		}
+		state.setSummary(summary.toString());
+		instance.setAsterixRuntimeStates(state);
+	}
 
-    public static void verifyBackupRestoreConfiguration(String hdfsUrl, String hadoopVersion, String hdfsBackupDir)
-            throws Exception {
-        StringBuffer errorCheck = new StringBuffer();
-        if (hdfsUrl == null || hdfsUrl.length() == 0) {
-            errorCheck.append("\n HDFS Url not configured");
-        }
-        if (hadoopVersion == null || hadoopVersion.length() == 0) {
-            errorCheck.append("\n HDFS version not configured");
-        }
-        if (hdfsBackupDir == null || hdfsBackupDir.length() == 0) {
-            errorCheck.append("\n HDFS backup directory not configured");
-        }
-        if (errorCheck.length() > 0) {
-            throw new Exception("Incomplete hdfs configuration in " + InstallerDriver.getManagixHome() + File.separator
-                    + InstallerDriver.MANAGIX_CONF_XML + errorCheck);
-        }
-    }
+	public static void verifyBackupRestoreConfiguration(String hdfsUrl,
+			String hadoopVersion, String hdfsBackupDir) throws Exception {
+		StringBuffer errorCheck = new StringBuffer();
+		if (hdfsUrl == null || hdfsUrl.length() == 0) {
+			errorCheck.append("\n HDFS Url not configured");
+		}
+		if (hadoopVersion == null || hadoopVersion.length() == 0) {
+			errorCheck.append("\n HDFS version not configured");
+		}
+		if (hdfsBackupDir == null || hdfsBackupDir.length() == 0) {
+			errorCheck.append("\n HDFS backup directory not configured");
+		}
+		if (errorCheck.length() > 0) {
+			throw new Exception("Incomplete hdfs configuration in "
+					+ InstallerDriver.getManagixHome() + File.separator
+					+ InstallerDriver.MANAGIX_CONF_XML + errorCheck);
+		}
+	}
 }
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/events/PatternCreator.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/events/PatternCreator.java
index 61f0d27..2184a63 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/events/PatternCreator.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/events/PatternCreator.java
@@ -42,393 +42,485 @@
 
 public class PatternCreator {
 
-    private ILookupService lookupService = ServiceProvider.INSTANCE.getLookupService();
+	private ILookupService lookupService = ServiceProvider.INSTANCE
+			.getLookupService();
 
-    private void addInitialDelay(Pattern p, int delay, String unit) {
-        Delay d = new Delay(new Value(null, "" + delay), unit);
-        p.setDelay(d);
-    }
+	private void addInitialDelay(Pattern p, int delay, String unit) {
+		Delay d = new Delay(new Value(null, "" + delay), unit);
+		p.setDelay(d);
+	}
 
-    public Patterns getStartAsterixPattern(String asterixInstanceName, Cluster cluster) throws Exception {
-        String ccLocationId = cluster.getMasterNode().getId();
-        String ccLocationIp = cluster.getMasterNode().getClusterIp();
+	public Patterns getStartAsterixPattern(String asterixInstanceName,
+			Cluster cluster) throws Exception {
+		String ccLocationId = cluster.getMasterNode().getId();
+		String ccLocationIp = cluster.getMasterNode().getClusterIp();
 
-        String destDir = cluster.getWorkingDir().getDir() + File.separator + "asterix";
-        List<Pattern> ps = new ArrayList<Pattern>();
+		String destDir = cluster.getWorkingDir().getDir() + File.separator
+				+ "asterix";
+		List<Pattern> ps = new ArrayList<Pattern>();
 
-        Pattern copyHyracks = createCopyHyracksPattern(asterixInstanceName, cluster, ccLocationIp, destDir);
-        ps.add(copyHyracks);
+		Pattern copyHyracks = createCopyHyracksPattern(asterixInstanceName,
+				cluster, ccLocationIp, destDir);
+		ps.add(copyHyracks);
 
-        Pattern createCC = createCCStartPattern(ccLocationId);
-        addInitialDelay(createCC, 2, "sec");
-        ps.add(createCC);
+		Pattern createCC = createCCStartPattern(ccLocationId);
+		addInitialDelay(createCC, 2, "sec");
+		ps.add(createCC);
 
-        boolean copyHyracksToNC = !cluster.getWorkingDir().isNFS();
-        for (Node node : cluster.getNode()) {
-            if (copyHyracksToNC) {
-                Pattern copyHyracksForNC = createCopyHyracksPattern(asterixInstanceName, cluster, node.getClusterIp(),
-                        destDir);
-                ps.add(copyHyracksForNC);
-            }
-            String iodevices = node.getIodevices() == null ? cluster.getIodevices() : node.getIodevices();
-            Pattern createNC = createNCStartPattern(cluster.getMasterNode().getClusterIp(), node.getId(),
-                    asterixInstanceName + "_" + node.getId(), iodevices);
-            addInitialDelay(createNC, 4, "sec");
-            ps.add(createNC);
-        }
+		boolean copyHyracksToNC = !cluster.getWorkingDir().isNFS();
+		for (Node node : cluster.getNode()) {
+			if (copyHyracksToNC) {
+				Pattern copyHyracksForNC = createCopyHyracksPattern(
+						asterixInstanceName, cluster, node.getClusterIp(),
+						destDir);
+				ps.add(copyHyracksForNC);
+			}
+			String iodevices = node.getIodevices() == null ? cluster
+					.getIodevices() : node.getIodevices();
+			Pattern createNC = createNCStartPattern(cluster.getMasterNode()
+					.getClusterIp(), node.getId(), asterixInstanceName + "_"
+					+ node.getId(), iodevices);
+			addInitialDelay(createNC, 4, "sec");
+			ps.add(createNC);
+		}
 
-        Patterns patterns = new Patterns(ps);
-        patterns.getPattern().addAll(createHadoopLibraryTransferPattern(cluster).getPattern());
-        return patterns;
-    }
+		Patterns patterns = new Patterns(ps);
+		patterns.getPattern().addAll(
+				createHadoopLibraryTransferPattern(cluster).getPattern());
+		return patterns;
+	}
 
-    public Patterns getStopCommandPattern(StopCommand stopCommand) throws Exception {
-        List<Pattern> ps = new ArrayList<Pattern>();
-        AsterixInstance asterixInstance = lookupService.getAsterixInstance(stopCommand.getAsterixInstanceName());
-        Cluster cluster = asterixInstance.getCluster();
+	public Patterns getStopCommandPattern(StopCommand stopCommand)
+			throws Exception {
+		List<Pattern> ps = new ArrayList<Pattern>();
+		AsterixInstance asterixInstance = lookupService
+				.getAsterixInstance(stopCommand.getAsterixInstanceName());
+		Cluster cluster = asterixInstance.getCluster();
 
-        String ccLocation = cluster.getMasterNode().getId();
-        Pattern createCC = createCCStopPattern(ccLocation);
-        addInitialDelay(createCC, 5, "sec");
-        ps.add(createCC);
+		String ccLocation = cluster.getMasterNode().getId();
+		Pattern createCC = createCCStopPattern(ccLocation);
+		addInitialDelay(createCC, 5, "sec");
+		ps.add(createCC);
 
-        String asterixInstanceName = stopCommand.getAsterixInstanceName();
-        int nodeControllerIndex = 1;
-        for (Node node : cluster.getNode()) {
-            Pattern createNC = createNCStopPattern(node.getId(), asterixInstanceName + "_" + nodeControllerIndex);
-            ps.add(createNC);
-            nodeControllerIndex++;
-        }
+		String asterixInstanceName = stopCommand.getAsterixInstanceName();
+		int nodeControllerIndex = 1;
+		for (Node node : cluster.getNode()) {
+			Pattern createNC = createNCStopPattern(node.getId(),
+					asterixInstanceName + "_" + nodeControllerIndex);
+			ps.add(createNC);
+			nodeControllerIndex++;
+		}
 
-        Patterns patterns = new Patterns(ps);
-        return patterns;
-    }
+		Patterns patterns = new Patterns(ps);
+		return patterns;
+	}
 
-    public Patterns getBackUpAsterixPattern(AsterixInstance instance, Backup backupConf) throws Exception {
-        BackupType backupType = BackupInfo.getBackupType(backupConf);
-        Patterns patterns = null;
-        switch (backupType) {
-            case HDFS:
-                patterns = getHDFSBackUpAsterixPattern(instance, backupConf);
-                break;
-            case LOCAL:
-                patterns = getLocalBackUpAsterixPattern(instance, backupConf);
-                break;
-        }
-        return patterns;
-    }
+	public Patterns getBackUpAsterixPattern(AsterixInstance instance,
+			Backup backupConf) throws Exception {
+		BackupType backupType = BackupInfo.getBackupType(backupConf);
+		Patterns patterns = null;
+		switch (backupType) {
+		case HDFS:
+			patterns = getHDFSBackUpAsterixPattern(instance, backupConf);
+			break;
+		case LOCAL:
+			patterns = getLocalBackUpAsterixPattern(instance, backupConf);
+			break;
+		}
+		return patterns;
+	}
 
-    public Patterns getRestoreAsterixPattern(AsterixInstance instance, BackupInfo backupInfo) throws Exception {
-        BackupType backupType = backupInfo.getBackupType();
-        Patterns patterns = null;
-        switch (backupType) {
-            case HDFS:
-                patterns = getHDFSRestoreAsterixPattern(instance, backupInfo);
-                break;
-            case LOCAL:
-                patterns = getLocalRestoreAsterixPattern(instance, backupInfo);
-                break;
-        }
-        return patterns;
-    }
+	public Patterns getRestoreAsterixPattern(AsterixInstance instance,
+			BackupInfo backupInfo) throws Exception {
+		BackupType backupType = backupInfo.getBackupType();
+		Patterns patterns = null;
+		switch (backupType) {
+		case HDFS:
+			patterns = getHDFSRestoreAsterixPattern(instance, backupInfo);
+			break;
+		case LOCAL:
+			patterns = getLocalRestoreAsterixPattern(instance, backupInfo);
+			break;
+		}
+		return patterns;
+	}
 
-    private Patterns getHDFSBackUpAsterixPattern(AsterixInstance instance, Backup backupConf) throws Exception {
-        Cluster cluster = instance.getCluster();
-        String hdfsUrl = backupConf.getHdfs().getUrl();
-        String hadoopVersion = backupConf.getHdfs().getVersion();
-        String hdfsBackupDir = backupConf.getBackupDir();
-        VerificationUtil.verifyBackupRestoreConfiguration(hdfsUrl, hadoopVersion, hdfsBackupDir);
-        String workingDir = cluster.getWorkingDir().getDir();
-        String backupId = "" + instance.getBackupInfo().size();
-        String store;
-        String pargs;
-        String iodevices;
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        for (Node node : cluster.getNode()) {
-            Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
-            iodevices = node.getIodevices() == null ? instance.getCluster().getIodevices() : node.getIodevices();
-            store = node.getStore() == null ? cluster.getStore() : node.getStore();
-            pargs = workingDir + " " + instance.getName() + " " + iodevices + " " + store + " "
-                    + BackupCommand.ASTERIX_ROOT_METADATA_DIR + " " + backupId + " " + hdfsBackupDir + " " + "hdfs"
-                    + " " + node.getId() + " " + hdfsUrl + " " + hadoopVersion;
-            Event event = new Event("backup", nodeid, pargs);
-            patternList.add(new Pattern(null, 1, null, event));
-        }
-        return new Patterns(patternList);
-    }
+	private Patterns getHDFSBackUpAsterixPattern(AsterixInstance instance,
+			Backup backupConf) throws Exception {
+		Cluster cluster = instance.getCluster();
+		String hdfsUrl = backupConf.getHdfs().getUrl();
+		String hadoopVersion = backupConf.getHdfs().getVersion();
+		String hdfsBackupDir = backupConf.getBackupDir();
+		VerificationUtil.verifyBackupRestoreConfiguration(hdfsUrl,
+				hadoopVersion, hdfsBackupDir);
+		String workingDir = cluster.getWorkingDir().getDir();
+		String backupId = "" + instance.getBackupInfo().size();
+		String store;
+		String pargs;
+		String iodevices;
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		for (Node node : cluster.getNode()) {
+			Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
+			iodevices = node.getIodevices() == null ? instance.getCluster()
+					.getIodevices() : node.getIodevices();
+			store = node.getStore() == null ? cluster.getStore() : node
+					.getStore();
+			pargs = workingDir + " " + instance.getName() + " " + iodevices
+					+ " " + store + " "
+					+ BackupCommand.ASTERIX_ROOT_METADATA_DIR + " " + backupId
+					+ " " + hdfsBackupDir + " " + "hdfs" + " " + node.getId()
+					+ " " + hdfsUrl + " " + hadoopVersion;
+			Event event = new Event("backup", nodeid, pargs);
+			patternList.add(new Pattern(null, 1, null, event));
+		}
+		return new Patterns(patternList);
+	}
 
-    private Patterns getLocalBackUpAsterixPattern(AsterixInstance instance, Backup backupConf) throws Exception {
-        Cluster cluster = instance.getCluster();
-        String backupDir = backupConf.getBackupDir();
-        String workingDir = cluster.getWorkingDir().getDir();
-        String backupId = "" + instance.getBackupInfo().size();
-        String iodevices;
-        String store;
-        String pargs;
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        for (Node node : cluster.getNode()) {
-            Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
-            iodevices = node.getIodevices() == null ? instance.getCluster().getIodevices() : node.getIodevices();
-            store = node.getStore() == null ? cluster.getStore() : node.getStore();
-            pargs = workingDir + " " + instance.getName() + " " + iodevices + " " + store + " "
-                    + BackupCommand.ASTERIX_ROOT_METADATA_DIR + " " + backupId + " " + backupDir + " " + "local" + " "
-                    + node.getId();
-            Event event = new Event("backup", nodeid, pargs);
-            patternList.add(new Pattern(null, 1, null, event));
-        }
-        return new Patterns(patternList);
-    }
+	private Patterns getLocalBackUpAsterixPattern(AsterixInstance instance,
+			Backup backupConf) throws Exception {
+		Cluster cluster = instance.getCluster();
+		String backupDir = backupConf.getBackupDir();
+		String workingDir = cluster.getWorkingDir().getDir();
+		String backupId = "" + instance.getBackupInfo().size();
+		String iodevices;
+		String store;
+		String pargs;
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		for (Node node : cluster.getNode()) {
+			Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
+			iodevices = node.getIodevices() == null ? instance.getCluster()
+					.getIodevices() : node.getIodevices();
+			store = node.getStore() == null ? cluster.getStore() : node
+					.getStore();
+			pargs = workingDir + " " + instance.getName() + " " + iodevices
+					+ " " + store + " "
+					+ BackupCommand.ASTERIX_ROOT_METADATA_DIR + " " + backupId
+					+ " " + backupDir + " " + "local" + " " + node.getId();
+			Event event = new Event("backup", nodeid, pargs);
+			patternList.add(new Pattern(null, 1, null, event));
+		}
+		return new Patterns(patternList);
+	}
 
-    public Patterns getHDFSRestoreAsterixPattern(AsterixInstance instance, BackupInfo backupInfo) throws Exception {
-        Cluster cluster = instance.getCluster();
-        String clusterStore = instance.getCluster().getStore();
-        String hdfsUrl = backupInfo.getBackupConf().getHdfs().getUrl();
-        String hadoopVersion = backupInfo.getBackupConf().getHdfs().getVersion();
-        String hdfsBackupDir = backupInfo.getBackupConf().getBackupDir();
-        VerificationUtil.verifyBackupRestoreConfiguration(hdfsUrl, hadoopVersion, hdfsBackupDir);
-        String workingDir = cluster.getWorkingDir().getDir();
-        int backupId = backupInfo.getId();
-        String nodeStore;
-        String pargs;
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        for (Node node : cluster.getNode()) {
-            Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
-            String iodevices = node.getIodevices() == null ? cluster.getIodevices() : node.getIodevices();
-            nodeStore = node.getStore() == null ? clusterStore : node.getStore();
-            pargs = workingDir + " " + instance.getName() + " " + iodevices + " " + nodeStore + " "
-                    + BackupCommand.ASTERIX_ROOT_METADATA_DIR + " " + backupId + " " + " " + hdfsBackupDir + " "
-                    + "hdfs" + " " + node.getId() + " " + hdfsUrl + " " + hadoopVersion;
-            Event event = new Event("restore", nodeid, pargs);
-            patternList.add(new Pattern(null, 1, null, event));
-        }
-        return new Patterns(patternList);
-    }
+	public Patterns getHDFSRestoreAsterixPattern(AsterixInstance instance,
+			BackupInfo backupInfo) throws Exception {
+		Cluster cluster = instance.getCluster();
+		String clusterStore = instance.getCluster().getStore();
+		String hdfsUrl = backupInfo.getBackupConf().getHdfs().getUrl();
+		String hadoopVersion = backupInfo.getBackupConf().getHdfs()
+				.getVersion();
+		String hdfsBackupDir = backupInfo.getBackupConf().getBackupDir();
+		VerificationUtil.verifyBackupRestoreConfiguration(hdfsUrl,
+				hadoopVersion, hdfsBackupDir);
+		String workingDir = cluster.getWorkingDir().getDir();
+		int backupId = backupInfo.getId();
+		String nodeStore;
+		String pargs;
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		for (Node node : cluster.getNode()) {
+			Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
+			String iodevices = node.getIodevices() == null ? cluster
+					.getIodevices() : node.getIodevices();
+			nodeStore = node.getStore() == null ? clusterStore : node
+					.getStore();
+			pargs = workingDir + " " + instance.getName() + " " + iodevices
+					+ " " + nodeStore + " "
+					+ BackupCommand.ASTERIX_ROOT_METADATA_DIR + " " + backupId
+					+ " " + " " + hdfsBackupDir + " " + "hdfs" + " "
+					+ node.getId() + " " + hdfsUrl + " " + hadoopVersion;
+			Event event = new Event("restore", nodeid, pargs);
+			patternList.add(new Pattern(null, 1, null, event));
+		}
+		return new Patterns(patternList);
+	}
 
-    public Patterns getLocalRestoreAsterixPattern(AsterixInstance instance, BackupInfo backupInfo) throws Exception {
-        Cluster cluster = instance.getCluster();
-        String clusterStore = instance.getCluster().getStore();
-        String backupDir = backupInfo.getBackupConf().getBackupDir();
-        String workingDir = cluster.getWorkingDir().getDir();
-        int backupId = backupInfo.getId();
-        String nodeStore;
-        String pargs;
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        for (Node node : cluster.getNode()) {
-            Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
-            String iodevices = node.getIodevices() == null ? cluster.getIodevices() : node.getIodevices();
-            nodeStore = node.getStore() == null ? clusterStore : node.getStore();
-            pargs = workingDir + " " + instance.getName() + " " + iodevices + " " + nodeStore + " "
-                    + BackupCommand.ASTERIX_ROOT_METADATA_DIR + " " + backupId + " " + backupDir + " " + "local" + " "
-                    + node.getId();
-            Event event = new Event("restore", nodeid, pargs);
-            patternList.add(new Pattern(null, 1, null, event));
-        }
-        return new Patterns(patternList);
-    }
+	public Patterns getLocalRestoreAsterixPattern(AsterixInstance instance,
+			BackupInfo backupInfo) throws Exception {
+		Cluster cluster = instance.getCluster();
+		String clusterStore = instance.getCluster().getStore();
+		String backupDir = backupInfo.getBackupConf().getBackupDir();
+		String workingDir = cluster.getWorkingDir().getDir();
+		int backupId = backupInfo.getId();
+		String nodeStore;
+		String pargs;
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		for (Node node : cluster.getNode()) {
+			Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
+			String iodevices = node.getIodevices() == null ? cluster
+					.getIodevices() : node.getIodevices();
+			nodeStore = node.getStore() == null ? clusterStore : node
+					.getStore();
+			pargs = workingDir + " " + instance.getName() + " " + iodevices
+					+ " " + nodeStore + " "
+					+ BackupCommand.ASTERIX_ROOT_METADATA_DIR + " " + backupId
+					+ " " + backupDir + " " + "local" + " " + node.getId();
+			Event event = new Event("restore", nodeid, pargs);
+			patternList.add(new Pattern(null, 1, null, event));
+		}
+		return new Patterns(patternList);
+	}
 
-    public Patterns createHadoopLibraryTransferPattern(Cluster cluster) throws Exception {
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        String workingDir = cluster.getWorkingDir().getDir();
-        String hadoopVersion = InstallerDriver.getConfiguration().getBackup().getHdfs().getVersion();
-        File hadoopDir = new File(InstallerDriver.getManagixHome() + File.separator
-                + InstallerDriver.MANAGIX_INTERNAL_DIR + File.separator + "hadoop-" + hadoopVersion);
-        if (!hadoopDir.exists()) {
-            throw new IllegalStateException("Hadoop version :" + hadoopVersion + " not supported");
-        }
+	public Patterns createHadoopLibraryTransferPattern(Cluster cluster)
+			throws Exception {
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		String workingDir = cluster.getWorkingDir().getDir();
+		String hadoopVersion = InstallerDriver.getConfiguration().getBackup()
+				.getHdfs().getVersion();
+		File hadoopDir = new File(InstallerDriver.getManagixHome()
+				+ File.separator + InstallerDriver.MANAGIX_INTERNAL_DIR
+				+ File.separator + "hadoop-" + hadoopVersion);
+		if (!hadoopDir.exists()) {
+			throw new IllegalStateException("Hadoop version :" + hadoopVersion
+					+ " not supported");
+		}
 
-        Nodeid nodeid = new Nodeid(new Value(null, EventDriver.CLIENT_NODE.getId()));
-        String username = cluster.getUsername() != null ? cluster.getUsername() : System.getProperty("user.name");
-        String pargs = username + " " + hadoopDir.getAbsolutePath() + " " + cluster.getMasterNode().getClusterIp()
-                + " " + workingDir;
-        Event event = new Event("directory_transfer", nodeid, pargs);
-        Pattern p = new Pattern(null, 1, null, event);
-        addInitialDelay(p, 2, "sec");
-        patternList.add(p);
+		Nodeid nodeid = new Nodeid(new Value(null,
+				EventDriver.CLIENT_NODE.getId()));
+		String username = cluster.getUsername() != null ? cluster.getUsername()
+				: System.getProperty("user.name");
+		String pargs = username + " " + hadoopDir.getAbsolutePath() + " "
+				+ cluster.getMasterNode().getClusterIp() + " " + workingDir;
+		Event event = new Event("directory_transfer", nodeid, pargs);
+		Pattern p = new Pattern(null, 1, null, event);
+		addInitialDelay(p, 2, "sec");
+		patternList.add(p);
 
-        boolean copyToNC = !cluster.getWorkingDir().isNFS();
-        if (copyToNC) {
-            for (Node node : cluster.getNode()) {
-                nodeid = new Nodeid(new Value(null, node.getId()));
-                pargs = cluster.getUsername() + " " + hadoopDir.getAbsolutePath() + " " + node.getClusterIp() + " "
-                        + workingDir;
-                event = new Event("directory_transfer", nodeid, pargs);
-                p = new Pattern(null, 1, null, event);
-                addInitialDelay(p, 2, "sec");
-                patternList.add(p);
-            }
-        }
-        Patterns patterns = new Patterns(patternList);
-        return patterns;
-    }
+		boolean copyToNC = !cluster.getWorkingDir().isNFS();
+		if (copyToNC) {
+			for (Node node : cluster.getNode()) {
+				nodeid = new Nodeid(new Value(null, node.getId()));
+				pargs = cluster.getUsername() + " "
+						+ hadoopDir.getAbsolutePath() + " "
+						+ node.getClusterIp() + " " + workingDir;
+				event = new Event("directory_transfer", nodeid, pargs);
+				p = new Pattern(null, 1, null, event);
+				addInitialDelay(p, 2, "sec");
+				patternList.add(p);
+			}
+		}
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
-    public Patterns createDeleteInstancePattern(AsterixInstance instance) throws Exception {
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        patternList.addAll(createRemoveAsterixStoragePattern(instance).getPattern());
-        if (instance.getBackupInfo() != null && instance.getBackupInfo().size() > 0) {
-            List<BackupInfo> backups = instance.getBackupInfo();
-            Set<String> removedBackupDirsHDFS = new HashSet<String>();
-            Set<String> removedBackupDirsLocal = new HashSet<String>();
+	public Patterns createDeleteInstancePattern(AsterixInstance instance)
+			throws Exception {
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		patternList.addAll(createRemoveAsterixStoragePattern(instance)
+				.getPattern());
+		if (instance.getBackupInfo() != null
+				&& instance.getBackupInfo().size() > 0) {
+			List<BackupInfo> backups = instance.getBackupInfo();
+			Set<String> removedBackupDirsHDFS = new HashSet<String>();
+			Set<String> removedBackupDirsLocal = new HashSet<String>();
 
-            String backupDir;
-            for (BackupInfo binfo : backups) {
-                backupDir = binfo.getBackupConf().getBackupDir();
-                switch (binfo.getBackupType()) {
-                    case HDFS:
-                        if (removedBackupDirsHDFS.contains(backups)) {
-                            continue;
-                        }
-                        patternList.addAll(createRemoveHDFSBackupPattern(instance, backupDir).getPattern());
-                        removedBackupDirsHDFS.add(backupDir);
-                        break;
+			String backupDir;
+			for (BackupInfo binfo : backups) {
+				backupDir = binfo.getBackupConf().getBackupDir();
+				switch (binfo.getBackupType()) {
+				case HDFS:
+					if (removedBackupDirsHDFS.contains(backups)) {
+						continue;
+					}
+					patternList.addAll(createRemoveHDFSBackupPattern(instance,
+							backupDir).getPattern());
+					removedBackupDirsHDFS.add(backupDir);
+					break;
 
-                    case LOCAL:
-                        if (removedBackupDirsLocal.contains(backups)) {
-                            continue;
-                        }
-                        patternList.addAll(createRemoveLocalBackupPattern(instance, backupDir).getPattern());
-                        removedBackupDirsLocal.add(backupDir);
-                        break;
-                }
+				case LOCAL:
+					if (removedBackupDirsLocal.contains(backups)) {
+						continue;
+					}
+					patternList.addAll(createRemoveLocalBackupPattern(instance,
+							backupDir).getPattern());
+					removedBackupDirsLocal.add(backupDir);
+					break;
+				}
 
-            }
-        }
-        patternList.addAll(createRemoveAsterixLogDirPattern(instance).getPattern());
-        Patterns patterns = new Patterns(patternList);
-        return patterns;
-    }
+			}
+		}
+		patternList.addAll(createRemoveAsterixLogDirPattern(instance)
+				.getPattern());
+		patternList.addAll(createRemoveAsterixRootMetadata(instance)
+				.getPattern());
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
-    private Patterns createRemoveHDFSBackupPattern(AsterixInstance instance, String hdfsBackupDir) throws Exception {
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        Cluster cluster = instance.getCluster();
-        String hdfsUrl = InstallerDriver.getConfiguration().getBackup().getHdfs().getUrl();
-        String hadoopVersion = InstallerDriver.getConfiguration().getBackup().getHdfs().getVersion();
-        String workingDir = cluster.getWorkingDir().getDir();
-        Node launchingNode = cluster.getNode().get(0);
-        Nodeid nodeid = new Nodeid(new Value(null, launchingNode.getId()));
-        String pathToDelete = hdfsBackupDir + File.separator + instance.getName();
-        String pargs = workingDir + " " + hadoopVersion + " " + hdfsUrl + " " + pathToDelete;
-        Event event = new Event("hdfs_delete", nodeid, pargs);
-        patternList.add(new Pattern(null, 1, null, event));
-        Patterns patterns = new Patterns(patternList);
-        return patterns;
-    }
+	private Patterns createRemoveHDFSBackupPattern(AsterixInstance instance,
+			String hdfsBackupDir) throws Exception {
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		Cluster cluster = instance.getCluster();
+		String hdfsUrl = InstallerDriver.getConfiguration().getBackup()
+				.getHdfs().getUrl();
+		String hadoopVersion = InstallerDriver.getConfiguration().getBackup()
+				.getHdfs().getVersion();
+		String workingDir = cluster.getWorkingDir().getDir();
+		Node launchingNode = cluster.getNode().get(0);
+		Nodeid nodeid = new Nodeid(new Value(null, launchingNode.getId()));
+		String pathToDelete = hdfsBackupDir + File.separator
+				+ instance.getName();
+		String pargs = workingDir + " " + hadoopVersion + " " + hdfsUrl + " "
+				+ pathToDelete;
+		Event event = new Event("hdfs_delete", nodeid, pargs);
+		patternList.add(new Pattern(null, 1, null, event));
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
-    private Patterns createRemoveLocalBackupPattern(AsterixInstance instance, String localBackupDir) throws Exception {
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        Cluster cluster = instance.getCluster();
+	private Patterns createRemoveLocalBackupPattern(AsterixInstance instance,
+			String localBackupDir) throws Exception {
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		Cluster cluster = instance.getCluster();
 
-        String pathToDelete = localBackupDir + File.separator + instance.getName();
-        String pargs = pathToDelete;
-        List<String> removedBackupDirs = new ArrayList<String>();
-        for (Node node : cluster.getNode()) {
-            if (removedBackupDirs.contains(node.getClusterIp())) {
-                continue;
-            }
-            Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
-            Event event = new Event("file_delete", nodeid, pargs);
-            patternList.add(new Pattern(null, 1, null, event));
-            removedBackupDirs.add(node.getClusterIp());
-        }
+		String pathToDelete = localBackupDir + File.separator
+				+ instance.getName();
+		String pargs = pathToDelete;
+		List<String> removedBackupDirs = new ArrayList<String>();
+		for (Node node : cluster.getNode()) {
+			if (removedBackupDirs.contains(node.getClusterIp())) {
+				continue;
+			}
+			Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
+			Event event = new Event("file_delete", nodeid, pargs);
+			patternList.add(new Pattern(null, 1, null, event));
+			removedBackupDirs.add(node.getClusterIp());
+		}
 
-        Patterns patterns = new Patterns(patternList);
-        return patterns;
-    }
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
-    public Patterns createRemoveAsterixWorkingDirPattern(AsterixInstance instance) throws Exception {
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        Cluster cluster = instance.getCluster();
-        String workingDir = cluster.getWorkingDir().getDir();
-        String pargs = workingDir;
-        Nodeid nodeid = new Nodeid(new Value(null, cluster.getMasterNode().getId()));
-        Event event = new Event("file_delete", nodeid, pargs);
-        patternList.add(new Pattern(null, 1, null, event));
+	public Patterns createRemoveAsterixWorkingDirPattern(
+			AsterixInstance instance) throws Exception {
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		Cluster cluster = instance.getCluster();
+		String workingDir = cluster.getWorkingDir().getDir();
+		String pargs = workingDir;
+		Nodeid nodeid = new Nodeid(new Value(null, cluster.getMasterNode()
+				.getId()));
+		Event event = new Event("file_delete", nodeid, pargs);
+		patternList.add(new Pattern(null, 1, null, event));
 
-        if (!cluster.getWorkingDir().isNFS()) {
-            for (Node node : cluster.getNode()) {
-                nodeid = new Nodeid(new Value(null, node.getId()));
-                event = new Event("file_delete", nodeid, pargs);
-                patternList.add(new Pattern(null, 1, null, event));
-            }
-        }
-        Patterns patterns = new Patterns(patternList);
-        return patterns;
-    }
+		if (!cluster.getWorkingDir().isNFS()) {
+			for (Node node : cluster.getNode()) {
+				nodeid = new Nodeid(new Value(null, node.getId()));
+				event = new Event("file_delete", nodeid, pargs);
+				patternList.add(new Pattern(null, 1, null, event));
+			}
+		}
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
-    private Patterns createRemoveAsterixLogDirPattern(AsterixInstance instance) throws Exception {
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        Cluster cluster = instance.getCluster();
-        String pargs = instance.getCluster().getLogdir();
-        Nodeid nodeid = new Nodeid(new Value(null, cluster.getMasterNode().getId()));
-        Event event = new Event("file_delete", nodeid, pargs);
-        patternList.add(new Pattern(null, 1, null, event));
+	private Patterns createRemoveAsterixRootMetadata(AsterixInstance instance)
+			throws Exception {
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		Cluster cluster = instance.getCluster();
+		Nodeid nodeid = null;
+		String pargs = null;
+		Event event = null;
+		for (Node node : cluster.getNode()) {
+			String iodevices = node.getIodevices() == null ? cluster
+					.getIodevices() : node.getIodevices();
+			String primaryIODevice = iodevices.split(",")[0].trim();
+			pargs = primaryIODevice + File.separator
+					+ BackupCommand.ASTERIX_ROOT_METADATA_DIR;
+			nodeid = new Nodeid(new Value(null, node.getId()));
+			event = new Event("file_delete", nodeid, pargs);
+			patternList.add(new Pattern(null, 1, null, event));
+		}
 
-        if (!cluster.getWorkingDir().isNFS()) {
-            for (Node node : cluster.getNode()) {
-                nodeid = new Nodeid(new Value(null, node.getId()));
-                event = new Event("file_delete", nodeid, pargs);
-                patternList.add(new Pattern(null, 1, null, event));
-            }
-        }
-        Patterns patterns = new Patterns(patternList);
-        return patterns;
-    }
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
-    private Patterns createRemoveAsterixStoragePattern(AsterixInstance instance) throws Exception {
-        List<Pattern> patternList = new ArrayList<Pattern>();
-        Cluster cluster = instance.getCluster();
-        String pargs = null;
+	private Patterns createRemoveAsterixLogDirPattern(AsterixInstance instance)
+			throws Exception {
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		Cluster cluster = instance.getCluster();
+		String pargs = instance.getCluster().getLogdir();
+		Nodeid nodeid = new Nodeid(new Value(null, cluster.getMasterNode()
+				.getId()));
+		Event event = new Event("file_delete", nodeid, pargs);
+		patternList.add(new Pattern(null, 1, null, event));
 
-        for (Node node : cluster.getNode()) {
-            Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
-            String[] nodeIODevices;
-            String iodevices = node.getIodevices() == null ? cluster.getIodevices() : node.getIodevices();
-            nodeIODevices = iodevices.trim().split(",");
-            for (String nodeIODevice : nodeIODevices) {
-                String nodeStore = node.getStore() == null ? cluster.getStore() : node.getStore();
-                pargs = nodeIODevice.trim() + File.separator + nodeStore;
-                Event event = new Event("file_delete", nodeid, pargs);
-                patternList.add(new Pattern(null, 1, null, event));
-            }
-        }
-        Patterns patterns = new Patterns(patternList);
-        return patterns;
-    }
+		for (Node node : cluster.getNode()) {
+			nodeid = new Nodeid(new Value(null, node.getId()));
+			event = new Event("file_delete", nodeid, pargs);
+			patternList.add(new Pattern(null, 1, null, event));
+		}
 
-    private Pattern createCopyHyracksPattern(String instanceName, Cluster cluster, String destinationIp, String destDir) {
-        Nodeid nodeid = new Nodeid(new Value(null, EventDriver.CLIENT_NODE.getId()));
-        String username = cluster.getUsername() != null ? cluster.getUsername() : System.getProperty("user.name");
-        String asterixZipName = InstallerDriver.getAsterixZip().substring(
-                InstallerDriver.getAsterixZip().lastIndexOf(File.separator) + 1);
-        String fileToTransfer = new File(InstallerDriver.getAsterixDir() + File.separator + instanceName
-                + File.separator + asterixZipName).getAbsolutePath();
-        String pargs = username + " " + fileToTransfer + " " + destinationIp + " " + destDir + " " + "unpack";
-        Event event = new Event("file_transfer", nodeid, pargs);
-        return new Pattern(null, 1, null, event);
-    }
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
-    private Pattern createCCStartPattern(String hostId) {
-        Nodeid nodeid = new Nodeid(new Value(null, hostId));
-        Event event = new Event("cc_start", nodeid, "");
-        return new Pattern(null, 1, null, event);
-    }
+	private Patterns createRemoveAsterixStoragePattern(AsterixInstance instance)
+			throws Exception {
+		List<Pattern> patternList = new ArrayList<Pattern>();
+		Cluster cluster = instance.getCluster();
+		String pargs = null;
 
-    public Pattern createCCStopPattern(String hostId) {
-        Nodeid nodeid = new Nodeid(new Value(null, hostId));
-        Event event = new Event("cc_failure", nodeid, null);
-        return new Pattern(null, 1, null, event);
-    }
+		for (Node node : cluster.getNode()) {
+			Nodeid nodeid = new Nodeid(new Value(null, node.getId()));
+			String[] nodeIODevices;
+			String iodevices = node.getIodevices() == null ? cluster
+					.getIodevices() : node.getIodevices();
+			nodeIODevices = iodevices.trim().split(",");
+			for (String nodeIODevice : nodeIODevices) {
+				String nodeStore = node.getStore() == null ? cluster.getStore()
+						: node.getStore();
+				pargs = nodeIODevice.trim() + File.separator + nodeStore;
+				Event event = new Event("file_delete", nodeid, pargs);
+				patternList.add(new Pattern(null, 1, null, event));
+			}
+		}
+		Patterns patterns = new Patterns(patternList);
+		return patterns;
+	}
 
-    public Pattern createNCStartPattern(String ccHost, String hostId, String nodeControllerId, String iodevices) {
-        Nodeid nodeid = new Nodeid(new Value(null, hostId));
-        String pargs = ccHost + " " + nodeControllerId + " " + iodevices;
-        Event event = new Event("node_join", nodeid, pargs);
-        return new Pattern(null, 1, null, event);
-    }
+	private Pattern createCopyHyracksPattern(String instanceName,
+			Cluster cluster, String destinationIp, String destDir) {
+		Nodeid nodeid = new Nodeid(new Value(null,
+				EventDriver.CLIENT_NODE.getId()));
+		String username = cluster.getUsername() != null ? cluster.getUsername()
+				: System.getProperty("user.name");
+		String asterixZipName = InstallerDriver.getAsterixZip()
+				.substring(
+						InstallerDriver.getAsterixZip().lastIndexOf(
+								File.separator) + 1);
+		String fileToTransfer = new File(InstallerDriver.getAsterixDir()
+				+ File.separator + instanceName + File.separator
+				+ asterixZipName).getAbsolutePath();
+		String pargs = username + " " + fileToTransfer + " " + destinationIp
+				+ " " + destDir + " " + "unpack";
+		Event event = new Event("file_transfer", nodeid, pargs);
+		return new Pattern(null, 1, null, event);
+	}
 
-    public Pattern createNCStopPattern(String hostId, String nodeControllerId) {
-        Nodeid nodeid = new Nodeid(new Value(null, hostId));
-        Event event = new Event("node_failure", nodeid, nodeControllerId);
-        return new Pattern(null, 1, null, event);
-    }
+	private Pattern createCCStartPattern(String hostId) {
+		Nodeid nodeid = new Nodeid(new Value(null, hostId));
+		Event event = new Event("cc_start", nodeid, "");
+		return new Pattern(null, 1, null, event);
+	}
+
+	public Pattern createCCStopPattern(String hostId) {
+		Nodeid nodeid = new Nodeid(new Value(null, hostId));
+		Event event = new Event("cc_failure", nodeid, null);
+		return new Pattern(null, 1, null, event);
+	}
+
+	public Pattern createNCStartPattern(String ccHost, String hostId,
+			String nodeControllerId, String iodevices) {
+		Nodeid nodeid = new Nodeid(new Value(null, hostId));
+		String pargs = ccHost + " " + nodeControllerId + " " + iodevices;
+		Event event = new Event("node_join", nodeid, pargs);
+		return new Pattern(null, 1, null, event);
+	}
+
+	public Pattern createNCStopPattern(String hostId, String nodeControllerId) {
+		Nodeid nodeid = new Nodeid(new Value(null, hostId));
+		Event event = new Event("node_failure", nodeid, nodeControllerId);
+		return new Pattern(null, 1, null, event);
+	}
 
 }
diff --git a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/model/AsterixInstance.java b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/model/AsterixInstance.java
index de1dcb3..9f8b28d 100644
--- a/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/model/AsterixInstance.java
+++ b/asterix-installer/src/main/java/edu/uci/ics/asterix/installer/model/AsterixInstance.java
@@ -25,158 +25,159 @@
 
 public class AsterixInstance implements Serializable {
 
-    private static final long serialVersionUID = 2874439550187520449L;
+	private static final long serialVersionUID = 2874439550187520449L;
 
-    public enum State {
-        ACTIVE,
-        INACTIVE,
-        UNUSABLE
-    }
+	public enum State {
+		ACTIVE, INACTIVE, UNUSABLE
+	}
 
-    private final Cluster cluster;
-    private final String name;
-    private final Date createdTimestamp;
-    private Date stateChangeTimestamp;
-    private Date modifiedTimestamp;
-    private Properties configuration;
-    private State state;
-    private final String metadataNodeId;
-    private final String asterixVersion;
-    private final List<BackupInfo> backupInfo;
-    private final String webInterfaceUrl;
-    private AsterixRuntimeState runtimeState;
-    private State previousState;
+	private final Cluster cluster;
+	private final String name;
+	private final Date createdTimestamp;
+	private Date stateChangeTimestamp;
+	private Date modifiedTimestamp;
+	private Properties configuration;
+	private State state;
+	private final String metadataNodeId;
+	private final String asterixVersion;
+	private final List<BackupInfo> backupInfo;
+	private final String webInterfaceUrl;
+	private AsterixRuntimeState runtimeState;
+	private State previousState;
 
-    public AsterixInstance(String name, Cluster cluster, Properties configuration, String metadataNodeId,
-            String asterixVersion) {
-        this.name = name;
-        this.cluster = cluster;
-        this.configuration = configuration;
-        this.metadataNodeId = metadataNodeId;
-        this.state = State.ACTIVE;
-        this.previousState = State.UNUSABLE;
-        this.asterixVersion = asterixVersion;
-        this.createdTimestamp = new Date();
-        this.backupInfo = new ArrayList<BackupInfo>();
-        this.webInterfaceUrl = "http://" + cluster.getMasterNode().getClusterIp() + ":" + 19001;
-    }
+	public AsterixInstance(String name, Cluster cluster,
+			Properties configuration, String metadataNodeId,
+			String asterixVersion) {
+		this.name = name;
+		this.cluster = cluster;
+		this.configuration = configuration;
+		this.metadataNodeId = metadataNodeId;
+		this.state = State.ACTIVE;
+		this.previousState = State.UNUSABLE;
+		this.asterixVersion = asterixVersion;
+		this.createdTimestamp = new Date();
+		this.backupInfo = new ArrayList<BackupInfo>();
+		this.webInterfaceUrl = "http://"
+				+ cluster.getMasterNode().getClusterIp() + ":" + 19001;
+	}
 
-    public Date getModifiedTimestamp() {
-        return stateChangeTimestamp;
-    }
+	public Date getModifiedTimestamp() {
+		return stateChangeTimestamp;
+	}
 
-    public Properties getConfiguration() {
-        return configuration;
-    }
+	public Properties getConfiguration() {
+		return configuration;
+	}
 
-    public void setConfiguration(Properties properties) {
-        this.configuration = properties;
-    }
+	public void setConfiguration(Properties properties) {
+		this.configuration = properties;
+	}
 
-    public State getState() {
-        return state;
-    }
+	public State getState() {
+		return state;
+	}
 
-    public void setState(State state) {
-        this.previousState = this.state;
-        this.state = state;
-    }
+	public void setState(State state) {
+		this.previousState = this.state;
+		this.state = state;
+	}
 
-    public Cluster getCluster() {
-        return cluster;
-    }
+	public Cluster getCluster() {
+		return cluster;
+	}
 
-    public String getName() {
-        return name;
-    }
+	public String getName() {
+		return name;
+	}
 
-    public Date getCreatedTimestamp() {
-        return createdTimestamp;
-    }
+	public Date getCreatedTimestamp() {
+		return createdTimestamp;
+	}
 
-    public Date getStateChangeTimestamp() {
-        return stateChangeTimestamp;
-    }
+	public Date getStateChangeTimestamp() {
+		return stateChangeTimestamp;
+	}
 
-    public void setStateChangeTimestamp(Date stateChangeTimestamp) {
-        this.stateChangeTimestamp = stateChangeTimestamp;
-    }
+	public void setStateChangeTimestamp(Date stateChangeTimestamp) {
+		this.stateChangeTimestamp = stateChangeTimestamp;
+	}
 
-    public void setModifiedTimestamp(Date modifiedTimestamp) {
-        this.modifiedTimestamp = modifiedTimestamp;
-    }
+	public void setModifiedTimestamp(Date modifiedTimestamp) {
+		this.modifiedTimestamp = modifiedTimestamp;
+	}
 
-    public String getMetadataNodeId() {
-        return metadataNodeId;
-    }
+	public String getMetadataNodeId() {
+		return metadataNodeId;
+	}
 
-    public String getAsterixVersion() {
-        return asterixVersion;
-    }
+	public String getAsterixVersion() {
+		return asterixVersion;
+	}
 
-    public String getDescription(boolean detailed) {
-        StringBuffer buffer = new StringBuffer();
-        buffer.append("Name:" + name + "\n");
-        buffer.append("Created:" + createdTimestamp + "\n");
-        buffer.append("Web-Url:" + webInterfaceUrl + "\n");
-        buffer.append("State:" + state);
-        if (!state.equals(State.UNUSABLE) && stateChangeTimestamp != null) {
-            buffer.append(" (" + stateChangeTimestamp + ")" + "\n");
-        } else {
-            buffer.append("\n");
-        }
-        if (modifiedTimestamp != null) {
-            buffer.append("Last modified timestamp:" + modifiedTimestamp + "\n");
-        }
+	public String getDescription(boolean detailed) {
+		StringBuffer buffer = new StringBuffer();
+		buffer.append("Name:" + name + "\n");
+		buffer.append("Created:" + createdTimestamp + "\n");
+		buffer.append("Web-Url:" + webInterfaceUrl + "\n");
+		buffer.append("State:" + state);
+		if (!state.equals(State.UNUSABLE) && stateChangeTimestamp != null) {
+			buffer.append(" (" + stateChangeTimestamp + ")" + "\n");
+		} else {
+			buffer.append("\n");
+		}
+		if (modifiedTimestamp != null) {
+			buffer.append("Last modified timestamp:" + modifiedTimestamp + "\n");
+		}
 
-        if (runtimeState.getSummary() != null && runtimeState.getSummary().length() > 0) {
-            buffer.append("\nWARNING!:" + runtimeState.getSummary() + "\n");
-        }
-        if (detailed) {
-            addDetailedInformation(buffer);
-        }
-        return buffer.toString();
-    }
+		if (runtimeState.getSummary() != null
+				&& runtimeState.getSummary().length() > 0) {
+			buffer.append("\nWARNING!:" + runtimeState.getSummary() + "\n");
+		}
+		if (detailed) {
+			addDetailedInformation(buffer);
+		}
+		return buffer.toString();
+	}
 
-    public List<BackupInfo> getBackupInfo() {
-        return backupInfo;
-    }
+	public List<BackupInfo> getBackupInfo() {
+		return backupInfo;
+	}
 
-    public String getWebInterfaceUrl() {
-        return webInterfaceUrl;
-    }
+	public String getWebInterfaceUrl() {
+		return webInterfaceUrl;
+	}
 
-    public AsterixRuntimeState getAsterixRuntimeState() {
-        return runtimeState;
-    }
+	public AsterixRuntimeState getAsterixRuntimeState() {
+		return runtimeState;
+	}
 
-    public void setAsterixRuntimeStates(AsterixRuntimeState runtimeState) {
-        this.runtimeState = runtimeState;
-    }
+	public void setAsterixRuntimeStates(AsterixRuntimeState runtimeState) {
+		this.runtimeState = runtimeState;
+	}
 
-    private void addDetailedInformation(StringBuffer buffer) {
-        buffer.append("Master node:" + cluster.getMasterNode().getId() + ":" + cluster.getMasterNode().getClusterIp()
-                + "\n");
-        for (Node node : cluster.getNode()) {
-            buffer.append(node.getId() + ":" + node.getClusterIp() + "\n");
-        }
+	private void addDetailedInformation(StringBuffer buffer) {
+		buffer.append("Master node:" + cluster.getMasterNode().getId() + ":"
+				+ cluster.getMasterNode().getClusterIp() + "\n");
+		for (Node node : cluster.getNode()) {
+			buffer.append(node.getId() + ":" + node.getClusterIp() + "\n");
+		}
 
-        if (backupInfo != null && backupInfo.size() > 0) {
-            for (BackupInfo info : backupInfo) {
-                buffer.append(info + "\n");
-            }
-        }
-        buffer.append("\n");
-        buffer.append("Asterix version:" + asterixVersion + "\n");
-        buffer.append("Metadata Node:" + metadataNodeId + "\n");
-        buffer.append("Processes" + "\n");
-        for (ProcessInfo pInfo : runtimeState.getProcesses()) {
-            buffer.append(pInfo + "\n");
-        }
+		if (backupInfo != null && backupInfo.size() > 0) {
+			for (BackupInfo info : backupInfo) {
+				buffer.append(info + "\n");
+			}
+		}
+		buffer.append("\n");
+		buffer.append("Asterix version:" + asterixVersion + "\n");
+		buffer.append("Metadata Node:" + metadataNodeId + "\n");
+		buffer.append("Processes" + "\n");
+		for (ProcessInfo pInfo : runtimeState.getProcesses()) {
+			buffer.append(pInfo + "\n");
+		}
 
-    }
+	}
 
-    public State getPreviousState() {
-        return previousState;
-    }
+	public State getPreviousState() {
+		return previousState;
+	}
 }
diff --git a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/declared/AqlMetadataProvider.java b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/declared/AqlMetadataProvider.java
index 1bba863..938dfc4 100644
--- a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/declared/AqlMetadataProvider.java
+++ b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/declared/AqlMetadataProvider.java
@@ -24,6 +24,7 @@
 import java.util.logging.Logger;
 
 import edu.uci.ics.asterix.common.config.DatasetConfig.DatasetType;
+import edu.uci.ics.asterix.common.config.DatasetConfig.IndexType;
 import edu.uci.ics.asterix.common.config.GlobalConfig;
 import edu.uci.ics.asterix.common.context.AsterixRuntimeComponentsProvider;
 import edu.uci.ics.asterix.common.context.TransactionSubsystemProvider;
@@ -106,6 +107,8 @@
 import edu.uci.ics.hyracks.api.dataset.ResultSetId;
 import edu.uci.ics.hyracks.api.io.FileReference;
 import edu.uci.ics.hyracks.api.job.JobSpecification;
+import edu.uci.ics.hyracks.data.std.accessors.PointableBinaryComparatorFactory;
+import edu.uci.ics.hyracks.data.std.primitive.ShortPointable;
 import edu.uci.ics.hyracks.dataflow.std.file.ConstantFileSplitProvider;
 import edu.uci.ics.hyracks.dataflow.std.file.FileScanOperatorDescriptor;
 import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
@@ -123,6 +126,9 @@
 import edu.uci.ics.hyracks.storage.am.common.tuples.TypeAwareTupleWriterFactory;
 import edu.uci.ics.hyracks.storage.am.lsm.btree.dataflow.LSMBTreeDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.lsm.common.dataflow.LSMTreeIndexInsertUpdateDeleteOperatorDescriptor;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.dataflow.LSMInvertedIndexDataflowHelperFactory;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.dataflow.LSMInvertedIndexInsertUpdateDeleteOperator;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.tokenizers.IBinaryTokenizerFactory;
 import edu.uci.ics.hyracks.storage.am.lsm.rtree.dataflow.LSMRTreeDataflowHelperFactory;
 import edu.uci.ics.hyracks.storage.am.rtree.dataflow.RTreeSearchOperatorDescriptor;
 import edu.uci.ics.hyracks.storage.am.rtree.frames.RTreePolicyType;
@@ -888,6 +894,14 @@
                 return getRTreeDmlRuntime(dataverseName, datasetName, indexName, propagatedSchema, typeEnv,
                         primaryKeys, secondaryKeys, filterFactory, recordDesc, context, spec, indexOp);
             }
+            case WORD_INVIX:
+            case NGRAM_INVIX:
+            case FUZZY_WORD_INVIX:
+            case FUZZY_NGRAM_INVIX: {
+                return getInvertedIndexDmlRuntime(dataverseName, datasetName, indexName, propagatedSchema, typeEnv,
+                        primaryKeys, secondaryKeys, filterFactory, recordDesc, context, spec, indexOp,
+                        secondaryIndex.getIndexType());
+            }
             default: {
                 throw new AlgebricksException("Insert and delete not implemented for index type: "
                         + secondaryIndex.getIndexType());
@@ -1028,6 +1042,132 @@
         }
     }
 
+    private Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getInvertedIndexDmlRuntime(String dataverseName,
+            String datasetName, String indexName, IOperatorSchema propagatedSchema, IVariableTypeEnvironment typeEnv,
+            List<LogicalVariable> primaryKeys, List<LogicalVariable> secondaryKeys,
+            AsterixTupleFilterFactory filterFactory, RecordDescriptor recordDesc, JobGenContext context,
+            JobSpecification spec, IndexOperation indexOp, IndexType indexType) throws AlgebricksException {
+
+        // Sanity checks.
+        if (primaryKeys.size() > 1) {
+            throw new AlgebricksException("Cannot create inverted index on dataset with composite primary key.");
+        }
+        if (secondaryKeys.size() > 1) {
+            throw new AlgebricksException("Cannot create composite inverted index on multiple fields.");
+        }
+
+        int numKeys = primaryKeys.size() + secondaryKeys.size();
+        // generate field permutations
+        int[] fieldPermutation = new int[numKeys];
+        int i = 0;
+        for (LogicalVariable varKey : secondaryKeys) {
+            int idx = propagatedSchema.findVariable(varKey);
+            fieldPermutation[i] = idx;
+            i++;
+        }
+        for (LogicalVariable varKey : primaryKeys) {
+            int idx = propagatedSchema.findVariable(varKey);
+            fieldPermutation[i] = idx;
+            i++;
+        }
+
+        boolean isPartitioned;
+        if (indexType == IndexType.FUZZY_WORD_INVIX || indexType == IndexType.FUZZY_NGRAM_INVIX) {
+            isPartitioned = true;
+        } else {
+            isPartitioned = false;
+        }
+
+        Dataset dataset = findDataset(dataverseName, datasetName);
+        if (dataset == null) {
+            throw new AlgebricksException("Unknown dataset " + datasetName + " in dataverse " + dataverseName);
+        }
+        String itemTypeName = dataset.getItemTypeName();
+        IAType itemType;
+        try {
+            itemType = MetadataManager.INSTANCE.getDatatype(mdTxnCtx, dataset.getDataverseName(), itemTypeName)
+                    .getDatatype();
+
+            if (itemType.getTypeTag() != ATypeTag.RECORD) {
+                throw new AlgebricksException("Only record types can be indexed.");
+            }
+
+            ARecordType recType = (ARecordType) itemType;
+
+            // Index parameters.
+            Index secondaryIndex = MetadataManager.INSTANCE.getIndex(mdTxnCtx, dataset.getDataverseName(),
+                    dataset.getDatasetName(), indexName);
+
+            List<String> secondaryKeyExprs = secondaryIndex.getKeyFieldNames();
+
+            int numTokenFields = (!isPartitioned) ? secondaryKeys.size() : secondaryKeys.size() + 1;
+            ITypeTraits[] tokenTypeTraits = new ITypeTraits[numTokenFields];
+            ITypeTraits[] invListsTypeTraits = new ITypeTraits[primaryKeys.size()];
+            IBinaryComparatorFactory[] tokenComparatorFactories = new IBinaryComparatorFactory[numTokenFields];
+            IBinaryComparatorFactory[] invListComparatorFactories = new IBinaryComparatorFactory[primaryKeys.size()];
+
+            IAType secondaryKeyType = null;
+            for (i = 0; i < secondaryKeys.size(); ++i) {
+                Pair<IAType, Boolean> keyPairType = Index.getNonNullableKeyFieldType(secondaryKeyExprs.get(i)
+                        .toString(), recType);
+                secondaryKeyType = keyPairType.first;
+            }
+            List<String> partitioningKeys = DatasetUtils.getPartitioningKeys(dataset);
+            i = 0;
+            for (String partitioningKey : partitioningKeys) {
+                IAType keyType = recType.getFieldType(partitioningKey);
+                invListsTypeTraits[i] = AqlTypeTraitProvider.INSTANCE.getTypeTrait(keyType);
+                ++i;
+            }
+
+            tokenComparatorFactories[0] = NonTaggedFormatUtil.getTokenBinaryComparatorFactory(secondaryKeyType);
+            tokenTypeTraits[0] = NonTaggedFormatUtil.getTokenTypeTrait(secondaryKeyType);
+            if (isPartitioned) {
+                // The partitioning field is hardcoded to be a short *without* an Asterix type tag.
+                tokenComparatorFactories[1] = PointableBinaryComparatorFactory.of(ShortPointable.FACTORY);
+                tokenTypeTraits[1] = ShortPointable.TYPE_TRAITS;
+            }
+            IBinaryTokenizerFactory tokenizerFactory = NonTaggedFormatUtil.getBinaryTokenizerFactory(
+                    secondaryKeyType.getTypeTag(), indexType, secondaryIndex.getGramLength());
+
+            IAsterixApplicationContextInfo appContext = (IAsterixApplicationContextInfo) context.getAppContext();
+            Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = splitProviderAndPartitionConstraintsForInternalOrFeedDataset(
+                    dataverseName, datasetName, indexName);
+
+            //prepare callback
+            JobId jobId = ((JobEventListenerFactory) spec.getJobletEventListenerFactory()).getJobId();
+            int datasetId = dataset.getDatasetId();
+            int[] primaryKeyFields = new int[primaryKeys.size()];
+            i = 0;
+            for (LogicalVariable varKey : primaryKeys) {
+                int idx = propagatedSchema.findVariable(varKey);
+                primaryKeyFields[i] = idx;
+                i++;
+            }
+            TransactionSubsystemProvider txnSubsystemProvider = new TransactionSubsystemProvider();
+            SecondaryIndexModificationOperationCallbackFactory modificationCallbackFactory = new SecondaryIndexModificationOperationCallbackFactory(
+                    jobId, datasetId, primaryKeyFields, txnSubsystemProvider, indexOp, ResourceType.LSM_INVERTED_INDEX);
+
+            LSMInvertedIndexInsertUpdateDeleteOperator insertDeleteOp = new LSMInvertedIndexInsertUpdateDeleteOperator(
+                    spec, recordDesc, appContext.getStorageManagerInterface(), splitsAndConstraint.first,
+                    appContext.getIndexLifecycleManagerProvider(), tokenTypeTraits, tokenComparatorFactories,
+                    invListsTypeTraits, invListComparatorFactories, tokenizerFactory, fieldPermutation, indexOp,
+                    new LSMInvertedIndexDataflowHelperFactory(
+                            AsterixRuntimeComponentsProvider.LSMINVERTEDINDEX_PROVIDER,
+                            AsterixRuntimeComponentsProvider.LSMINVERTEDINDEX_PROVIDER,
+                            AsterixRuntimeComponentsProvider.LSMINVERTEDINDEX_PROVIDER,
+                            AsterixRuntimeComponentsProvider.LSMINVERTEDINDEX_PROVIDER,
+                            GlobalConfig.DEFAULT_INDEX_MEM_PAGE_SIZE, GlobalConfig.DEFAULT_INDEX_MEM_NUM_PAGES),
+                    filterFactory, modificationCallbackFactory);
+            return new Pair<IOperatorDescriptor, AlgebricksPartitionConstraint>(insertDeleteOp,
+                    splitsAndConstraint.second);
+        } catch (MetadataException e) {
+            throw new AlgebricksException(e);
+        } catch (IOException e) {
+            throw new AlgebricksException(e);
+        }
+    }
+
     private Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getRTreeDmlRuntime(String dataverseName,
             String datasetName, String indexName, IOperatorSchema propagatedSchema, IVariableTypeEnvironment typeEnv,
             List<LogicalVariable> primaryKeys, List<LogicalVariable> secondaryKeys,
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/NonTaggedFormatUtil.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/NonTaggedFormatUtil.java
index a8c0485..047c459 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/NonTaggedFormatUtil.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/util/NonTaggedFormatUtil.java
@@ -2,18 +2,29 @@
 
 import java.util.List;
 
+import edu.uci.ics.asterix.common.config.DatasetConfig.IndexType;
 import edu.uci.ics.asterix.common.exceptions.AsterixException;
 import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt16SerializerDeserializer;
 import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AOrderedListSerializerDeserializer;
 import edu.uci.ics.asterix.dataflow.data.nontagged.serde.ARecordSerializerDeserializer;
 import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AUnorderedListSerializerDeserializer;
+import edu.uci.ics.asterix.formats.nontagged.AqlBinaryComparatorFactoryProvider;
+import edu.uci.ics.asterix.formats.nontagged.AqlBinaryTokenizerFactoryProvider;
+import edu.uci.ics.asterix.formats.nontagged.AqlTypeTraitProvider;
+import edu.uci.ics.asterix.om.types.AOrderedListType;
 import edu.uci.ics.asterix.om.types.ARecordType;
 import edu.uci.ics.asterix.om.types.ATypeTag;
 import edu.uci.ics.asterix.om.types.AUnionType;
+import edu.uci.ics.asterix.om.types.AUnorderedListType;
+import edu.uci.ics.asterix.om.types.AbstractCollectionType;
 import edu.uci.ics.asterix.om.types.BuiltinType;
 import edu.uci.ics.asterix.om.types.EnumDeserializer;
 import edu.uci.ics.asterix.om.types.IAType;
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
 import edu.uci.ics.hyracks.algebricks.common.exceptions.NotImplementedException;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.tokenizers.IBinaryTokenizerFactory;
 
 public final class NonTaggedFormatUtil {
 
@@ -160,4 +171,58 @@
                 throw new NotImplementedException(typeTag + " is not a supported spatial data type.");
         }
     }
+
+    public static IBinaryTokenizerFactory getBinaryTokenizerFactory(ATypeTag keyType, IndexType indexType,
+            int gramLength) throws AlgebricksException {
+        switch (indexType) {
+            case WORD_INVIX:
+            case FUZZY_WORD_INVIX: {
+                return AqlBinaryTokenizerFactoryProvider.INSTANCE.getWordTokenizerFactory(keyType, false);
+            }
+            case NGRAM_INVIX:
+            case FUZZY_NGRAM_INVIX: {
+                return AqlBinaryTokenizerFactoryProvider.INSTANCE.getNGramTokenizerFactory(keyType, gramLength, true,
+                        false);
+            }
+            default: {
+                throw new AlgebricksException("Tokenizer not applicable to index type '" + indexType + "'.");
+            }
+        }
+    }
+
+    public static IBinaryComparatorFactory getTokenBinaryComparatorFactory(IAType keyType) throws AlgebricksException {
+        IAType type = keyType;
+        ATypeTag typeTag = keyType.getTypeTag();
+        // Extract item type from list.
+        if (typeTag == ATypeTag.UNORDEREDLIST || typeTag == ATypeTag.ORDEREDLIST) {
+            AbstractCollectionType listType = (AbstractCollectionType) keyType;
+            if (!listType.isTyped()) {
+                throw new AlgebricksException("Cannot build an inverted index on untyped lists.)");
+            }
+            type = listType.getItemType();
+        }
+        // Ignore case for string types.
+        return AqlBinaryComparatorFactoryProvider.INSTANCE.getBinaryComparatorFactory(type, true, true);
+    }
+
+    public static ITypeTraits getTokenTypeTrait(IAType keyType) throws AlgebricksException {
+        IAType type = keyType;
+        ATypeTag typeTag = keyType.getTypeTag();
+        // Extract item type from list.
+        if (typeTag == ATypeTag.UNORDEREDLIST) {
+            AUnorderedListType ulistType = (AUnorderedListType) keyType;
+            if (!ulistType.isTyped()) {
+                throw new AlgebricksException("Cannot build an inverted index on untyped lists.)");
+            }
+            type = ulistType.getItemType();
+        }
+        if (typeTag == ATypeTag.ORDEREDLIST) {
+            AOrderedListType olistType = (AOrderedListType) keyType;
+            if (!olistType.isTyped()) {
+                throw new AlgebricksException("Cannot build an inverted index on untyped lists.)");
+            }
+            type = olistType.getItemType();
+        }
+        return AqlTypeTraitProvider.INSTANCE.getTypeTrait(type);
+    }
 }