diff --git a/hivesterix/pom.xml b/hivesterix/pom.xml
index 03f22e5..cf9c4b5 100644
--- a/hivesterix/pom.xml
+++ b/hivesterix/pom.xml
@@ -102,13 +102,6 @@
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
-			<groupId>org.apache.derby</groupId>
-			<artifactId>derby</artifactId>
-			<version>10.6.1.0</version>
-			<type>jar</type>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
 			<groupId>commons-collections</groupId>
 			<artifactId>commons-collections</artifactId>
 			<version>3.2.1</version>
@@ -230,13 +223,6 @@
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
-			<groupId>org.apache.derby</groupId>
-			<artifactId>derby</artifactId>
-			<version>10.4.2.0</version>
-			<type>jar</type>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
 			<groupId>commons-cli</groupId>
 			<artifactId>commons-cli</artifactId>
 			<version>1.2</version>
@@ -273,13 +259,6 @@
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
-			<groupId>jline</groupId>
-			<artifactId>jline</artifactId>
-			<version>0.9.94</version>
-			<type>jar</type>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
 			<groupId>org.antlr</groupId>
 			<artifactId>stringtemplate</artifactId>
 			<version>3.2</version>
@@ -336,6 +315,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>appassembler-maven-plugin</artifactId>
+				<version>1.3</version>
 				<executions>
 					<execution>
 						<configuration>
@@ -375,7 +355,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.7.2</version>
+				<version>2.13</version>
 				<configuration>
 					<forkMode>pertest</forkMode>
 					<argLine>-enableassertions -Xmx2047m -Dfile.encoding=UTF-8 
@@ -508,6 +488,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/hyracks/hyracks-cli/pom.xml b/hyracks/hyracks-cli/pom.xml
index 3933be0..7bb6123 100644
--- a/hyracks/hyracks-cli/pom.xml
+++ b/hyracks/hyracks-cli/pom.xml
@@ -41,6 +41,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml b/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
index 82919ca..ba296ac 100644
--- a/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
+++ b/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
@@ -44,6 +44,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
index 2f0b00f..dd96db8 100644
--- a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
+++ b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
@@ -40,6 +40,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-examples/text-example/textclient/pom.xml b/hyracks/hyracks-examples/text-example/textclient/pom.xml
index d593ef9..901f1fb 100644
--- a/hyracks/hyracks-examples/text-example/textclient/pom.xml
+++ b/hyracks/hyracks-examples/text-example/textclient/pom.xml
@@ -40,6 +40,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
           <id>textclient</id>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml b/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
index 3170306..6b3f603 100644
--- a/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
@@ -36,6 +36,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-hadoop-compat/pom.xml b/hyracks/hyracks-hadoop-compat/pom.xml
index 849efe3..3426293 100644
--- a/hyracks/hyracks-hadoop-compat/pom.xml
+++ b/hyracks/hyracks-hadoop-compat/pom.xml
@@ -25,6 +25,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-hdfs/pom.xml b/hyracks/hyracks-hdfs/pom.xml
index 42530c2..b80dbd5 100644
--- a/hyracks/hyracks-hdfs/pom.xml
+++ b/hyracks/hyracks-hdfs/pom.xml
@@ -37,17 +37,18 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
 							<directory>.</directory>
 							<includes>
-								<include>teststore*</include>
 								<include>edu*</include>
 								<include>actual*</include>
 								<include>build*</include>
 								<include>expect*</include>
 								<include>ClusterController*</include>
+								<include>edu.uci.*</include>
 							</includes>
 						</fileset>
 					</filesets>
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParser.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParser.java
index 523786c..5923e1e 100644
--- a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParser.java
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParser.java
@@ -18,9 +18,33 @@
 import edu.uci.ics.hyracks.api.comm.IFrameWriter;
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 
+/**
+ * Users need to implement this interface to use the HDFSReadOperatorDescriptor.
+ * 
+ * @param <K>
+ *            the key type
+ * @param <V>
+ *            the value type
+ */
 public interface IKeyValueParser<K, V> {
 
+    /**
+     * Parse a key-value pair returned by HDFS record reader to a tuple.
+     * when the parsers' internal buffer is full, it can flush the buffer to the writer
+     * 
+     * @param key
+     * @param value
+     * @param writer
+     * @throws HyracksDataException
+     */
     public void parse(K key, V value, IFrameWriter writer) throws HyracksDataException;
 
+    /**
+     * Flush the residual tuples in the internal buffer to the writer.
+     * This method is called in the close() of HDFSReadOperatorDescriptor.
+     * 
+     * @param writer
+     * @throws HyracksDataException
+     */
     public void flush(IFrameWriter writer) throws HyracksDataException;
 }
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParserFactory.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParserFactory.java
index cc16087..6e943ad 100644
--- a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParserFactory.java
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParserFactory.java
@@ -19,8 +19,23 @@
 
 import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
 
+/**
+ * Users need to implement this interface to use the HDFSReadOperatorDescriptor.
+ * 
+ * @param <K>
+ *            the key type
+ * @param <V>
+ *            the value type
+ */
 public interface IKeyValueParserFactory<K, V> extends Serializable {
 
+    /**
+     * This method creates a key-value parser.
+     * 
+     * @param ctx
+     *            the IHyracksTaskContext
+     * @return a key-value parser instance.
+     */
     public IKeyValueParser<K, V> createKeyValueParser(IHyracksTaskContext ctx);
 
 }
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriter.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriter.java
index 05bb102..25b9523 100644
--- a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriter.java
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriter.java
@@ -20,8 +20,20 @@
 import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
 import edu.uci.ics.hyracks.dataflow.common.data.accessors.ITupleReference;
 
+/**
+ * Users need to implement this interface to use the HDFSWriteOperatorDescriptor.
+ */
 public interface ITupleWriter {
 
+    /**
+     * Write the tuple to the DataOutput.
+     * 
+     * @param output
+     *            the DataOutput channel
+     * @param tuple
+     *            the tuple to write
+     * @throws HyracksDataException
+     */
     public void write(DataOutput output, ITupleReference tuple) throws HyracksDataException;
 
 }
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriterFactory.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriterFactory.java
index 35313f9..839de8f 100644
--- a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriterFactory.java
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriterFactory.java
@@ -17,8 +17,14 @@
 
 import java.io.Serializable;
 
+/**
+ * Users need to implement this interface to use the HDFSWriteOperatorDescriptor.
+ */
 public interface ITupleWriterFactory extends Serializable {
 
+    /**
+     * @return a tuple writer instance
+     */
     public ITupleWriter getTupleWriter();
 
 }
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSReadOperatorDescriptor.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSReadOperatorDescriptor.java
index 50dac60..69936a4 100644
--- a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSReadOperatorDescriptor.java
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSReadOperatorDescriptor.java
@@ -15,6 +15,8 @@
 
 package edu.uci.ics.hyracks.hdfs.dataflow;
 
+import java.util.Arrays;
+
 import org.apache.hadoop.mapred.InputFormat;
 import org.apache.hadoop.mapred.InputSplit;
 import org.apache.hadoop.mapred.JobConf;
@@ -37,11 +39,30 @@
 public class HDFSReadOperatorDescriptor extends AbstractSingleActivityOperatorDescriptor {
 
     private static final long serialVersionUID = 1L;
-    private ConfFactory confFactory;
-    private InputSplitsFactory splitsFactory;
-    private String[] scheduledLocations;
-    private IKeyValueParserFactory tupleParserFactory;
+    private final ConfFactory confFactory;
+    private final InputSplitsFactory splitsFactory;
+    private final String[] scheduledLocations;
+    private final IKeyValueParserFactory tupleParserFactory;
+    private final boolean[] executed;
 
+    /**
+     * The constructor of HDFSReadOperatorDescriptor.
+     * 
+     * @param spec
+     *            the JobSpecification object
+     * @param rd
+     *            the output record descriptor
+     * @param conf
+     *            the Hadoop JobConf object, which contains the input format and the input paths
+     * @param splits
+     *            the array of FileSplits (HDFS chunks).
+     * @param scheduledLocations
+     *            the node controller names to scan the FileSplits, which is an one-to-one mapping. The String array
+     *            is obtained from the edu.cui.ics.hyracks.hdfs.scheduler.Scheduler.getLocationConstraints(InputSplits[]).
+     * @param tupleParserFactory
+     *            the ITupleParserFactory implementation instance.
+     * @throws HyracksException
+     */
     public HDFSReadOperatorDescriptor(JobSpecification spec, RecordDescriptor rd, JobConf conf, InputSplit[] splits,
             String[] scheduledLocations, IKeyValueParserFactory tupleParserFactory) throws HyracksException {
         super(spec, 0, 1);
@@ -52,6 +73,8 @@
             throw new HyracksException(e);
         }
         this.scheduledLocations = scheduledLocations;
+        this.executed = new boolean[scheduledLocations.length];
+        Arrays.fill(executed, false);
         this.tupleParserFactory = tupleParserFactory;
         this.recordDescriptors[0] = rd;
     }
@@ -78,6 +101,22 @@
                          * read all the partitions scheduled to the current node
                          */
                         if (scheduledLocations[i].equals(nodeName)) {
+                            /**
+                             * pick an unread split to read
+                             * synchronize among simultaneous partitions in the same machine
+                             */
+                            synchronized (executed) {
+                                if (executed[i] == false) {
+                                    executed[i] = true;
+                                    System.out.println("thread " + Thread.currentThread().getId() + " setting " + i);
+                                } else {
+                                    continue;
+                                }
+                            }
+
+                            /**
+                             * read the split
+                             */
                             RecordReader reader = inputFormat.getRecordReader(inputSplits[i], conf, Reporter.NULL);
                             Object key = reader.createKey();
                             Object value = reader.createValue();
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSWriteOperatorDescriptor.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSWriteOperatorDescriptor.java
index 740f90e..8fac758 100644
--- a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSWriteOperatorDescriptor.java
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSWriteOperatorDescriptor.java
@@ -45,6 +45,17 @@
     private ConfFactory confFactory;
     private ITupleWriterFactory tupleWriterFactory;
 
+    /**
+     * The constructor of HDFSWriteOperatorDescriptor.
+     * 
+     * @param spec
+     *            the JobSpecification object
+     * @param conf
+     *            the Hadoop JobConf which contains the output path
+     * @param tupleWriterFactory
+     *            the ITupleWriterFactory implementation object
+     * @throws HyracksException
+     */
     public HDFSWriteOperatorDescriptor(JobSpecification spec, JobConf conf, ITupleWriterFactory tupleWriterFactory)
             throws HyracksException {
         super(spec, 1, 0);
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryComparatorFactory.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryComparatorFactory.java
new file mode 100644
index 0000000..90c5977
--- /dev/null
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryComparatorFactory.java
@@ -0,0 +1,32 @@
+package edu.uci.ics.hyracks.hdfs.lib;
+
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparator;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
+
+public class RawBinaryComparatorFactory implements IBinaryComparatorFactory {
+
+    private static final long serialVersionUID = 1L;
+    public static IBinaryComparatorFactory INSTANCE = new RawBinaryComparatorFactory();
+
+    private RawBinaryComparatorFactory() {
+    }
+
+    @Override
+    public IBinaryComparator createBinaryComparator() {
+        return new IBinaryComparator() {
+
+            @Override
+            public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
+                int commonLength = Math.min(l1, l2);
+                for (int i = 0; i < commonLength; i++) {
+                    if (b1[s1 + i] != b2[s2 + i]) {
+                        return b1[s1 + i] - b2[s2 + i];
+                    }
+                }
+                int difference = l1 - l2;
+                return difference == 0 ? 0 : (difference > 0 ? 1 : -1);
+            }
+
+        };
+    }
+}
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryHashFunctionFactory.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryHashFunctionFactory.java
new file mode 100644
index 0000000..7895fec
--- /dev/null
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryHashFunctionFactory.java
@@ -0,0 +1,29 @@
+package edu.uci.ics.hyracks.hdfs.lib;
+
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunction;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunctionFactory;
+
+public class RawBinaryHashFunctionFactory implements IBinaryHashFunctionFactory {
+    private static final long serialVersionUID = 1L;
+
+    public static IBinaryHashFunctionFactory INSTANCE = new RawBinaryHashFunctionFactory();
+
+    private RawBinaryHashFunctionFactory() {
+    }
+
+    @Override
+    public IBinaryHashFunction createBinaryHashFunction() {
+
+        return new IBinaryHashFunction() {
+            @Override
+            public int hash(byte[] bytes, int offset, int length) {
+                int value = 1;
+                int end = offset + length;
+                for (int i = offset; i < end; i++)
+                    value = value * 31 + (int) bytes[i];
+                return value;
+            }
+        };
+    }
+
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/scheduler/Scheduler.java b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/scheduler/Scheduler.java
index cb1db45..9fa74fa 100644
--- a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/scheduler/Scheduler.java
+++ b/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/scheduler/Scheduler.java
@@ -35,7 +35,7 @@
 /**
  * The scheduler conduct data-local scheduling for data on HDFS
  */
-@SuppressWarnings({ "rawtypes", "deprecation" })
+@SuppressWarnings("deprecation")
 public class Scheduler {
 
     /** a list of NCs */
diff --git a/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/dataflow/DataflowTest.java b/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/dataflow/DataflowTest.java
index 2b83972..23e1344 100644
--- a/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/dataflow/DataflowTest.java
+++ b/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/dataflow/DataflowTest.java
@@ -37,12 +37,19 @@
 import edu.uci.ics.hyracks.api.client.HyracksConnection;
 import edu.uci.ics.hyracks.api.client.IHyracksClientConnection;
 import edu.uci.ics.hyracks.api.constraints.PartitionConstraintHelper;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunctionFactory;
 import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
 import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
 import edu.uci.ics.hyracks.api.job.JobId;
 import edu.uci.ics.hyracks.api.job.JobSpecification;
 import edu.uci.ics.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
+import edu.uci.ics.hyracks.dataflow.common.data.partition.FieldHashPartitionComputerFactory;
+import edu.uci.ics.hyracks.dataflow.std.connectors.MToNPartitioningMergingConnectorDescriptor;
 import edu.uci.ics.hyracks.dataflow.std.connectors.OneToOneConnectorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.sort.ExternalSortOperatorDescriptor;
+import edu.uci.ics.hyracks.hdfs.lib.RawBinaryComparatorFactory;
+import edu.uci.ics.hyracks.hdfs.lib.RawBinaryHashFunctionFactory;
 import edu.uci.ics.hyracks.hdfs.lib.TextKeyValueParserFactory;
 import edu.uci.ics.hyracks.hdfs.lib.TextTupleWriterFactory;
 import edu.uci.ics.hyracks.hdfs.scheduler.Scheduler;
@@ -126,23 +133,32 @@
         conf.setInputFormat(TextInputFormat.class);
 
         Scheduler scheduler = new Scheduler(HyracksUtils.CC_HOST, HyracksUtils.TEST_HYRACKS_CC_CLIENT_PORT);
-        InputSplit[] splits = conf.getInputFormat().getSplits(conf, numberOfNC);
+        InputSplit[] splits = conf.getInputFormat().getSplits(conf, numberOfNC * 4);
 
         String[] readSchedule = scheduler.getLocationConstraints(splits);
         JobSpecification jobSpec = new JobSpecification();
         RecordDescriptor recordDesc = new RecordDescriptor(
                 new ISerializerDeserializer[] { UTF8StringSerializerDeserializer.INSTANCE });
 
-        String[] locations = new String[] { HyracksUtils.NC1_ID, HyracksUtils.NC2_ID };
+        String[] locations = new String[] { HyracksUtils.NC1_ID, HyracksUtils.NC1_ID, HyracksUtils.NC2_ID,
+                HyracksUtils.NC2_ID };
         HDFSReadOperatorDescriptor readOperator = new HDFSReadOperatorDescriptor(jobSpec, recordDesc, conf, splits,
                 readSchedule, new TextKeyValueParserFactory());
         PartitionConstraintHelper.addAbsoluteLocationConstraint(jobSpec, readOperator, locations);
 
+        ExternalSortOperatorDescriptor sortOperator = new ExternalSortOperatorDescriptor(jobSpec, 10, new int[] { 0 },
+                new IBinaryComparatorFactory[] { RawBinaryComparatorFactory.INSTANCE }, recordDesc);
+        PartitionConstraintHelper.addAbsoluteLocationConstraint(jobSpec, sortOperator, locations);
+
         HDFSWriteOperatorDescriptor writeOperator = new HDFSWriteOperatorDescriptor(jobSpec, conf,
                 new TextTupleWriterFactory());
-        PartitionConstraintHelper.addAbsoluteLocationConstraint(jobSpec, writeOperator, locations);
+        PartitionConstraintHelper.addAbsoluteLocationConstraint(jobSpec, writeOperator, HyracksUtils.NC1_ID);
 
-        jobSpec.connect(new OneToOneConnectorDescriptor(jobSpec), readOperator, 0, writeOperator, 0);
+        jobSpec.connect(new OneToOneConnectorDescriptor(jobSpec), readOperator, 0, sortOperator, 0);
+        jobSpec.connect(new MToNPartitioningMergingConnectorDescriptor(jobSpec, new FieldHashPartitionComputerFactory(
+                new int[] { 0 }, new IBinaryHashFunctionFactory[] { RawBinaryHashFunctionFactory.INSTANCE }),
+                new int[] { 0 }, new IBinaryComparatorFactory[] { RawBinaryComparatorFactory.INSTANCE }), sortOperator,
+                0, writeOperator, 0);
         jobSpec.addRoot(writeOperator);
 
         IHyracksClientConnection client = new HyracksConnection(HyracksUtils.CC_HOST,
@@ -167,8 +183,6 @@
 
         TestUtils.compareWithResult(new File(EXPECTED_RESULT_PATH + File.separator + "part-0"), new File(
                 ACTUAL_RESULT_DIR + File.separator + "customer_result" + File.separator + "part-0"));
-        TestUtils.compareWithResult(new File(EXPECTED_RESULT_PATH + File.separator + "part-1"), new File(
-                ACTUAL_RESULT_DIR + File.separator + "customer_result" + File.separator + "part-1"));
         return true;
     }
 
diff --git a/hyracks/hyracks-hdfs/src/test/resources/expected/part-0 b/hyracks/hyracks-hdfs/src/test/resources/expected/part-0
index 1e4c58b..ce3b00c 100755
--- a/hyracks/hyracks-hdfs/src/test/resources/expected/part-0
+++ b/hyracks/hyracks-hdfs/src/test/resources/expected/part-0
@@ -1,22 +1,65 @@
-1|Customer#000000001|IVhzIApeRb ot,c,E|15|25-989-741-2988|711.56|BUILDING|to the even, regular platelets. regular, ironic epitaphs nag e|
-2|Customer#000000002|XSTf4,NCwDVaWNe6tEgvwfmRchLXak|13|23-768-687-3665|121.65|AUTOMOBILE|l accounts. blithely ironic theodolites integrate boldly: caref|
-3|Customer#000000003|MG9kdTD2WBHm|1|11-719-748-3364|7498.12|AUTOMOBILE| deposits eat slyly ironic, even instructions. express foxes detect slyly. blithely even accounts abov|
-4|Customer#000000004|XxVSJsLAGtn|4|14-128-190-5944|2866.83|MACHINERY| requests. final, regular ideas sleep final accou|
-5|Customer#000000005|KvpyuHCplrB84WgAiGV6sYpZq7Tj|3|13-750-942-6364|794.47|HOUSEHOLD|n accounts will have to unwind. foxes cajole accor|
-6|Customer#000000006|sKZz0CsnMD7mp4Xd0YrBvx,LREYKUWAh yVn|20|30-114-968-4951|7638.57|AUTOMOBILE|tions. even deposits boost according to the slyly bold packages. final accounts cajole requests. furious|
-7|Customer#000000007|TcGe5gaZNgVePxU5kRrvXBfkasDTea|18|28-190-982-9759|9561.95|AUTOMOBILE|ainst the ironic, express theodolites. express, even pinto beans among the exp|
-8|Customer#000000008|I0B10bB0AymmC, 0PrRYBCP1yGJ8xcBPmWhl5|17|27-147-574-9335|6819.74|BUILDING|among the slyly regular theodolites kindle blithely courts. carefully even theodolites haggle slyly along the ide|
-9|Customer#000000009|xKiAFTjUsCuxfeleNqefumTrjS|8|18-338-906-3675|8324.07|FURNITURE|r theodolites according to the requests wake thinly excuses: pending requests haggle furiousl|
+100|Customer#000000100|fptUABXcmkC5Wx|20|30-749-445-4907|9889.89|FURNITURE|was furiously fluffily quiet deposits. silent, pending requests boost against |
+101|Customer#000000101|sMmL2rNeHDltovSm Y|2|12-514-298-3699|7470.96|MACHINERY| sleep. pending packages detect slyly ironic pack|
+102|Customer#000000102|UAtflJ06 fn9zBfKjInkQZlWtqaA|19|29-324-978-8538|8462.17|BUILDING|ously regular dependencies nag among the furiously express dinos. blithely final|
+103|Customer#000000103|8KIsQX4LJ7QMsj6DrtFtXu0nUEdV,8a|9|19-216-107-2107|2757.45|BUILDING|furiously pending notornis boost slyly around the blithely ironic ideas? final, even instructions cajole fl|
+104|Customer#000000104|9mcCK L7rt0SwiYtrbO88DiZS7U d7M|10|20-966-284-8065|-588.38|FURNITURE|rate carefully slyly special pla|
+105|Customer#000000105|4iSJe4L SPjg7kJj98Yz3z0B|10|20-793-553-6417|9091.82|MACHINERY|l pains cajole even accounts. quietly final instructi|
+106|Customer#000000106|xGCOEAUjUNG|1|11-751-989-4627|3288.42|MACHINERY|lose slyly. ironic accounts along the evenly regular theodolites wake about the special, final gifts. |
+107|Customer#000000107|Zwg64UZ,q7GRqo3zm7P1tZIRshBDz|15|25-336-529-9919|2514.15|AUTOMOBILE|counts cajole slyly. regular requests wake. furiously regular deposits about the blithely final fo|
+108|Customer#000000108|GPoeEvpKo1|5|15-908-619-7526|2259.38|BUILDING|refully ironic deposits sleep. regular, unusual requests wake slyly|
+109|Customer#000000109|OOOkYBgCMzgMQXUmkocoLb56rfrdWp2NE2c|16|26-992-422-8153|-716.10|BUILDING|es. fluffily final dependencies sleep along the blithely even pinto beans. final deposits haggle furiously furiou|
 10|Customer#000000010|6LrEaV6KR6PLVcgl2ArL Q3rqzLzcT1 v2|5|15-741-346-9870|2753.54|HOUSEHOLD|es regular deposits haggle. fur|
+110|Customer#000000110|mymPfgphaYXNYtk|10|20-893-536-2069|7462.99|AUTOMOBILE|nto beans cajole around the even, final deposits. quickly bold packages according to the furiously regular dept|
+111|Customer#000000111|CBSbPyOWRorloj2TBvrK9qp9tHBs|22|32-582-283-7528|6505.26|MACHINERY|ly unusual instructions detect fluffily special deposits-- theodolites nag carefully during the ironic dependencies|
+112|Customer#000000112|RcfgG3bO7QeCnfjqJT1|19|29-233-262-8382|2953.35|FURNITURE|rmanently unusual multipliers. blithely ruthless deposits are furiously along the|
+113|Customer#000000113|eaOl5UBXIvdY57rglaIzqvfPD,MYfK|12|22-302-930-4756|2912.00|BUILDING|usly regular theodolites boost furiously doggedly pending instructio|
+114|Customer#000000114|xAt 5f5AlFIU|14|24-805-212-7646|1027.46|FURNITURE|der the carefully express theodolites are after the packages. packages are. bli|
+115|Customer#000000115|0WFt1IXENmUT2BgbsB0ShVKJZt0HCBCbFl0aHc|8|18-971-699-1843|7508.92|HOUSEHOLD|sits haggle above the carefully ironic theodolite|
+116|Customer#000000116|yCuVxIgsZ3,qyK2rloThy3u|16|26-632-309-5792|8403.99|BUILDING|as. quickly final sauternes haggle slyly carefully even packages. brave, ironic pinto beans are above the furious|
+117|Customer#000000117|uNhM,PzsRA3S,5Y Ge5Npuhi|24|34-403-631-3505|3950.83|FURNITURE|affix. instructions are furiously sl|
+118|Customer#000000118|OVnFuHygK9wx3xpg8|18|28-639-943-7051|3582.37|AUTOMOBILE|uick packages alongside of the furiously final deposits haggle above the fluffily even foxes. blithely dogged dep|
+119|Customer#000000119|M1ETOIecuvH8DtM0Y0nryXfW|7|17-697-919-8406|3930.35|FURNITURE|express ideas. blithely ironic foxes thrash. special acco|
 11|Customer#000000011|PkWS 3HlXqwTuzrKg633BEi|23|33-464-151-3439|-272.60|BUILDING|ckages. requests sleep slyly. quickly even pinto beans promise above the slyly regular pinto beans. |
+120|Customer#000000120|zBNna00AEInqyO1|12|22-291-534-1571|363.75|MACHINERY| quickly. slyly ironic requests cajole blithely furiously final dependen|
+121|Customer#000000121|tv nCR2YKupGN73mQudO|17|27-411-990-2959|6428.32|BUILDING|uriously stealthy ideas. carefully final courts use carefully|
+122|Customer#000000122|yp5slqoNd26lAENZW3a67wSfXA6hTF|3|13-702-694-4520|7865.46|HOUSEHOLD| the special packages hinder blithely around the permanent requests. bold depos|
+123|Customer#000000123|YsOnaaER8MkvK5cpf4VSlq|5|15-817-151-1168|5897.83|BUILDING|ependencies. regular, ironic requests are fluffily regu|
+124|Customer#000000124|aTbyVAW5tCd,v09O|18|28-183-750-7809|1842.49|AUTOMOBILE|le fluffily even dependencies. quietly s|
+125|Customer#000000125|,wSZXdVR xxIIfm9s8ITyLl3kgjT6UC07GY0Y|19|29-261-996-3120|-234.12|FURNITURE|x-ray finally after the packages? regular requests c|
+126|Customer#000000126|ha4EHmbx3kg DYCsP6DFeUOmavtQlHhcfaqr|22|32-755-914-7592|1001.39|HOUSEHOLD|s about the even instructions boost carefully furiously ironic pearls. ruthless, |
+127|Customer#000000127|Xyge4DX2rXKxXyye1Z47LeLVEYMLf4Bfcj|21|31-101-672-2951|9280.71|MACHINERY|ic, unusual theodolites nod silently after the final, ironic instructions: pending r|
+128|Customer#000000128|AmKUMlJf2NRHcKGmKjLS|4|14-280-874-8044|-986.96|HOUSEHOLD|ing packages integrate across the slyly unusual dugouts. blithely silent ideas sublate carefully. blithely expr|
+129|Customer#000000129|q7m7rbMM0BpaCdmxloCgBDRCleXsXkdD8kf|7|17-415-148-7416|9127.27|HOUSEHOLD| unusual deposits boost carefully furiously silent ideas. pending accounts cajole slyly across|
 12|Customer#000000012|9PWKuhzT4Zr1Q|13|23-791-276-1263|3396.49|HOUSEHOLD| to the carefully final braids. blithely regular requests nag. ironic theodolites boost quickly along|
+130|Customer#000000130|RKPx2OfZy0Vn 8wGWZ7F2EAvmMORl1k8iH|9|19-190-993-9281|5073.58|HOUSEHOLD|ix slowly. express packages along the furiously ironic requests integrate daringly deposits. fur|
+131|Customer#000000131|jyN6lAjb1FtH10rMC,XzlWyCBrg75|11|21-840-210-3572|8595.53|HOUSEHOLD|jole special packages. furiously final dependencies about the furiously speci|
+132|Customer#000000132|QM5YabAsTLp9|4|14-692-150-9717|162.57|HOUSEHOLD|uickly carefully special theodolites. carefully regular requests against the blithely unusual instructions |
+133|Customer#000000133|IMCuXdpIvdkYO92kgDGuyHgojcUs88p|17|27-408-997-8430|2314.67|AUTOMOBILE|t packages. express pinto beans are blithely along the unusual, even theodolites. silent packages use fu|
+134|Customer#000000134|sUiZ78QCkTQPICKpA9OBzkUp2FM|11|21-200-159-5932|4608.90|BUILDING|yly fluffy foxes boost final ideas. b|
+135|Customer#000000135|oZK,oC0 fdEpqUML|19|29-399-293-6241|8732.91|FURNITURE| the slyly final accounts. deposits cajole carefully. carefully sly packag|
+136|Customer#000000136|QoLsJ0v5C1IQbh,DS1|7|17-501-210-4726|-842.39|FURNITURE|ackages sleep ironic, final courts. even requests above the blithely bold requests g|
+137|Customer#000000137|cdW91p92rlAEHgJafqYyxf1Q|16|26-777-409-5654|7838.30|HOUSEHOLD|carefully regular theodolites use. silent dolphins cajo|
+138|Customer#000000138|5uyLAeY7HIGZqtu66Yn08f|5|15-394-860-4589|430.59|MACHINERY|ts doze on the busy ideas. regular|
+139|Customer#000000139|3ElvBwudHKL02732YexGVFVt |9|19-140-352-1403|7897.78|MACHINERY|nstructions. quickly ironic ideas are carefully. bold, |
 13|Customer#000000013|nsXQu0oVjD7PM659uC3SRSp|3|13-761-547-5974|3857.34|BUILDING|ounts sleep carefully after the close frays. carefully bold notornis use ironic requests. blithely|
+140|Customer#000000140|XRqEPiKgcETII,iOLDZp5jA|4|14-273-885-6505|9963.15|MACHINERY|ies detect slyly ironic accounts. slyly ironic theodolites hag|
+141|Customer#000000141|5IW,WROVnikc3l7DwiUDGQNGsLBGOL6Dc0|1|11-936-295-6204|6706.14|FURNITURE|packages nag furiously. carefully unusual accounts snooze according to the fluffily regular pinto beans. slyly spec|
+142|Customer#000000142|AnJ5lxtLjioClr2khl9pb8NLxG2,|9|19-407-425-2584|2209.81|AUTOMOBILE|. even, express theodolites upo|
+143|Customer#000000143|681r22uL452zqk 8By7I9o9enQfx0|16|26-314-406-7725|2186.50|MACHINERY|across the blithely unusual requests haggle theodo|
+144|Customer#000000144|VxYZ3ebhgbltnetaGjNC8qCccjYU05 fePLOno8y|1|11-717-379-4478|6417.31|MACHINERY|ges. slyly regular accounts are slyly. bold, idle reque|
+145|Customer#000000145|kQjHmt2kcec cy3hfMh969u|13|23-562-444-8454|9748.93|HOUSEHOLD|ests? express, express instructions use. blithely fina|
+146|Customer#000000146|GdxkdXG9u7iyI1,,y5tq4ZyrcEy|3|13-835-723-3223|3328.68|FURNITURE|ffily regular dinos are slyly unusual requests. slyly specia|
+147|Customer#000000147|6VvIwbVdmcsMzuu,C84GtBWPaipGfi7DV|18|28-803-187-4335|8071.40|AUTOMOBILE|ress packages above the blithely regular packages sleep fluffily blithely ironic accounts. |
+148|Customer#000000148|BhSPlEWGvIJyT9swk vCWE|11|21-562-498-6636|2135.60|HOUSEHOLD|ing to the carefully ironic requests. carefully regular dependencies about the theodolites wake furious|
+149|Customer#000000149|3byTHCp2mNLPigUrrq|19|29-797-439-6760|8959.65|AUTOMOBILE|al instructions haggle against the slyly bold w|
 14|Customer#000000014|KXkletMlL2JQEA |1|11-845-129-3851|5266.30|FURNITURE|, ironic packages across the unus|
+150|Customer#000000150|zeoGShTjCwGPplOWFkLURrh41O0AZ8dwNEEN4 |18|28-328-564-7630|3849.48|MACHINERY|ole blithely among the furiously pending packages. furiously bold ideas wake fluffily ironic idea|
 15|Customer#000000015|YtWggXoOLdwdo7b0y,BZaGUQMLJMX1Y,EC,6Dn|23|33-687-542-7601|2788.52|HOUSEHOLD| platelets. regular deposits detect asymptotes. blithely unusual packages nag slyly at the fluf|
 16|Customer#000000016|cYiaeMLZSMAOQ2 d0W,|10|20-781-609-3107|4681.03|FURNITURE|kly silent courts. thinly regular theodolites sleep fluffily after |
 17|Customer#000000017|izrh 6jdqtp2eqdtbkswDD8SG4SzXruMfIXyR7|2|12-970-682-3487|6.34|AUTOMOBILE|packages wake! blithely even pint|
 18|Customer#000000018|3txGO AiuFux3zT0Z9NYaFRnZt|6|16-155-215-1315|5494.43|BUILDING|s sleep. carefully even instructions nag furiously alongside of t|
 19|Customer#000000019|uc,3bHIx84H,wdrmLOjVsiqXCq2tr|18|28-396-526-5053|8914.71|HOUSEHOLD| nag. furiously careful packages are slyly at the accounts. furiously regular in|
+1|Customer#000000001|IVhzIApeRb ot,c,E|15|25-989-741-2988|711.56|BUILDING|to the even, regular platelets. regular, ironic epitaphs nag e|
 20|Customer#000000020|JrPk8Pqplj4Ne|22|32-957-234-8742|7603.40|FURNITURE|g alongside of the special excuses-- fluffily enticing packages wake |
 21|Customer#000000021|XYmVpr9yAHDEn|8|18-902-614-8344|1428.25|MACHINERY| quickly final accounts integrate blithely furiously u|
 22|Customer#000000022|QI6p41,FNs5k7RZoCCVPUTkUdYpB|3|13-806-545-9701|591.98|MACHINERY|s nod furiously above the furiously ironic ideas. |
@@ -27,6 +70,7 @@
 27|Customer#000000027|IS8GIyxpBrLpMT0u7|3|13-137-193-2709|5679.84|BUILDING| about the carefully ironic pinto beans. accoun|
 28|Customer#000000028|iVyg0daQ,Tha8x2WPWA9m2529m|8|18-774-241-1462|1007.18|FURNITURE| along the regular deposits. furiously final pac|
 29|Customer#000000029|sJ5adtfyAkCK63df2,vF25zyQMVYE34uh|0|10-773-203-7342|7618.27|FURNITURE|its after the carefully final platelets x-ray against |
+2|Customer#000000002|XSTf4,NCwDVaWNe6tEgvwfmRchLXak|13|23-768-687-3665|121.65|AUTOMOBILE|l accounts. blithely ironic theodolites integrate boldly: caref|
 30|Customer#000000030|nJDsELGAavU63Jl0c5NKsKfL8rIJQQkQnYL2QJY|1|11-764-165-5076|9321.01|BUILDING|lithely final requests. furiously unusual account|
 31|Customer#000000031|LUACbO0viaAv6eXOAebryDB xjVst|23|33-197-837-7094|5236.89|HOUSEHOLD|s use among the blithely pending depo|
 32|Customer#000000032|jD2xZzi UmId,DCtNBLXKj9q0Tlp2iQ6ZcO3J|15|25-430-914-2194|3471.53|BUILDING|cial ideas. final, furious requests across the e|
@@ -37,6 +81,7 @@
 37|Customer#000000037|7EV4Pwh,3SboctTWt|8|18-385-235-7162|-917.75|FURNITURE|ilent packages are carefully among the deposits. furiousl|
 38|Customer#000000038|a5Ee5e9568R8RLP 2ap7|12|22-306-880-7212|6345.11|HOUSEHOLD|lar excuses. closely even asymptotes cajole blithely excuses. carefully silent pinto beans sleep carefully fin|
 39|Customer#000000039|nnbRg,Pvy33dfkorYE FdeZ60|2|12-387-467-6509|6264.31|AUTOMOBILE|tions. slyly silent excuses slee|
+3|Customer#000000003|MG9kdTD2WBHm|1|11-719-748-3364|7498.12|AUTOMOBILE| deposits eat slyly ironic, even instructions. express foxes detect slyly. blithely even accounts abov|
 40|Customer#000000040|gOnGWAyhSV1ofv|3|13-652-915-8939|1335.30|BUILDING|rges impress after the slyly ironic courts. foxes are. blithely |
 41|Customer#000000041|IM9mzmyoxeBmvNw8lA7G3Ydska2nkZF|10|20-917-711-4011|270.95|HOUSEHOLD|ly regular accounts hang bold, silent packages. unusual foxes haggle slyly above the special, final depo|
 42|Customer#000000042|ziSrvyyBke|5|15-416-330-4175|8727.01|BUILDING|ssly according to the pinto beans: carefully special requests across the even, pending accounts wake special|
@@ -47,6 +92,7 @@
 47|Customer#000000047|b0UgocSqEW5 gdVbhNT|2|12-427-271-9466|274.58|BUILDING|ions. express, ironic instructions sleep furiously ironic ideas. furi|
 48|Customer#000000048|0UU iPhBupFvemNB|0|10-508-348-5882|3792.50|BUILDING|re fluffily pending foxes. pending, bold platelets sleep slyly. even platelets cajo|
 49|Customer#000000049|cNgAeX7Fqrdf7HQN9EwjUa4nxT,68L FKAxzl|10|20-908-631-4424|4573.94|FURNITURE|nusual foxes! fluffily pending packages maintain to the regular |
+4|Customer#000000004|XxVSJsLAGtn|4|14-128-190-5944|2866.83|MACHINERY| requests. final, regular ideas sleep final accou|
 50|Customer#000000050|9SzDYlkzxByyJ1QeTI o|6|16-658-112-3221|4266.13|MACHINERY|ts. furiously ironic accounts cajole furiously slyly ironic dinos.|
 51|Customer#000000051|uR,wEaiTvo4|12|22-344-885-4251|855.87|FURNITURE|eposits. furiously regular requests integrate carefully packages. furious|
 52|Customer#000000052|7 QOqGqqSy9jfV51BC71jcHJSD0|11|21-186-284-5998|5630.28|HOUSEHOLD|ic platelets use evenly even accounts. stealthy theodolites cajole furiou|
@@ -57,6 +103,7 @@
 57|Customer#000000057|97XYbsuOPRXPWU|21|31-835-306-1650|4151.93|AUTOMOBILE|ove the carefully special packages. even, unusual deposits sleep slyly pend|
 58|Customer#000000058|g9ap7Dk1Sv9fcXEWjpMYpBZIRUohi T|13|23-244-493-2508|6478.46|HOUSEHOLD|ideas. ironic ideas affix furiously express, final instructions. regular excuses use quickly e|
 59|Customer#000000059|zLOCP0wh92OtBihgspOGl4|1|11-355-584-3112|3458.60|MACHINERY|ously final packages haggle blithely after the express deposits. furiou|
+5|Customer#000000005|KvpyuHCplrB84WgAiGV6sYpZq7Tj|3|13-750-942-6364|794.47|HOUSEHOLD|n accounts will have to unwind. foxes cajole accor|
 60|Customer#000000060|FyodhjwMChsZmUz7Jz0H|12|22-480-575-5866|2741.87|MACHINERY|latelets. blithely unusual courts boost furiously about the packages. blithely final instruct|
 61|Customer#000000061|9kndve4EAJxhg3veF BfXr7AqOsT39o gtqjaYE|17|27-626-559-8599|1536.24|FURNITURE|egular packages shall have to impress along the |
 62|Customer#000000062|upJK2Dnw13,|7|17-361-978-7059|595.61|MACHINERY|kly special dolphins. pinto beans are slyly. quickly regular accounts are furiously a|
@@ -67,6 +114,7 @@
 67|Customer#000000067|rfG0cOgtr5W8 xILkwp9fpCS8|9|19-403-114-4356|8166.59|MACHINERY|indle furiously final, even theodo|
 68|Customer#000000068|o8AibcCRkXvQFh8hF,7o|12|22-918-832-2411|6853.37|HOUSEHOLD| pending pinto beans impress realms. final dependencies |
 69|Customer#000000069|Ltx17nO9Wwhtdbe9QZVxNgP98V7xW97uvSH1prEw|9|19-225-978-5670|1709.28|HOUSEHOLD|thely final ideas around the quickly final dependencies affix carefully quickly final theodolites. final accounts c|
+6|Customer#000000006|sKZz0CsnMD7mp4Xd0YrBvx,LREYKUWAh yVn|20|30-114-968-4951|7638.57|AUTOMOBILE|tions. even deposits boost according to the slyly bold packages. final accounts cajole requests. furious|
 70|Customer#000000070|mFowIuhnHjp2GjCiYYavkW kUwOjIaTCQ|22|32-828-107-2832|4867.52|FURNITURE|fter the special asymptotes. ideas after the unusual frets cajole quickly regular pinto be|
 71|Customer#000000071|TlGalgdXWBmMV,6agLyWYDyIz9MKzcY8gl,w6t1B|7|17-710-812-5403|-611.19|HOUSEHOLD|g courts across the regular, final pinto beans are blithely pending ac|
 72|Customer#000000072|putjlmskxE,zs,HqeIA9Wqu7dhgH5BVCwDwHHcf|2|12-759-144-9689|-362.86|FURNITURE|ithely final foxes sleep always quickly bold accounts. final wat|
@@ -75,3 +123,28 @@
 75|Customer#000000075|Dh 6jZ,cwxWLKQfRKkiGrzv6pm|18|28-247-803-9025|6684.10|AUTOMOBILE| instructions cajole even, even deposits. finally bold deposits use above the even pains. slyl|
 76|Customer#000000076|m3sbCvjMOHyaOofH,e UkGPtqc4|0|10-349-718-3044|5745.33|FURNITURE|pecial deposits. ironic ideas boost blithely according to the closely ironic theodolites! furiously final deposits n|
 77|Customer#000000077|4tAE5KdMFGD4byHtXF92vx|17|27-269-357-4674|1738.87|BUILDING|uffily silent requests. carefully ironic asymptotes among the ironic hockey players are carefully bli|
+78|Customer#000000078|HBOta,ZNqpg3U2cSL0kbrftkPwzX|9|19-960-700-9191|7136.97|FURNITURE|ests. blithely bold pinto beans h|
+79|Customer#000000079|n5hH2ftkVRwW8idtD,BmM2|15|25-147-850-4166|5121.28|MACHINERY|es. packages haggle furiously. regular, special requests poach after the quickly express ideas. blithely pending re|
+7|Customer#000000007|TcGe5gaZNgVePxU5kRrvXBfkasDTea|18|28-190-982-9759|9561.95|AUTOMOBILE|ainst the ironic, express theodolites. express, even pinto beans among the exp|
+80|Customer#000000080|K,vtXp8qYB |0|10-267-172-7101|7383.53|FURNITURE|tect among the dependencies. bold accounts engage closely even pinto beans. ca|
+81|Customer#000000081|SH6lPA7JiiNC6dNTrR|20|30-165-277-3269|2023.71|BUILDING|r packages. fluffily ironic requests cajole fluffily. ironically regular theodolit|
+82|Customer#000000082|zhG3EZbap4c992Gj3bK,3Ne,Xn|18|28-159-442-5305|9468.34|AUTOMOBILE|s wake. bravely regular accounts are furiously. regula|
+83|Customer#000000083|HnhTNB5xpnSF20JBH4Ycs6psVnkC3RDf|22|32-817-154-4122|6463.51|BUILDING|ccording to the quickly bold warhorses. final, regular foxes integrate carefully. bold packages nag blithely ev|
+84|Customer#000000084|lpXz6Fwr9945rnbtMc8PlueilS1WmASr CB|11|21-546-818-3802|5174.71|FURNITURE|ly blithe foxes. special asymptotes haggle blithely against the furiously regular depo|
+85|Customer#000000085|siRerlDwiolhYR 8FgksoezycLj|5|15-745-585-8219|3386.64|FURNITURE|ronic ideas use above the slowly pendin|
+86|Customer#000000086|US6EGGHXbTTXPL9SBsxQJsuvy|0|10-677-951-2353|3306.32|HOUSEHOLD|quests. pending dugouts are carefully aroun|
+87|Customer#000000087|hgGhHVSWQl 6jZ6Ev|23|33-869-884-7053|6327.54|FURNITURE|hely ironic requests integrate according to the ironic accounts. slyly regular pla|
+88|Customer#000000088|wtkjBN9eyrFuENSMmMFlJ3e7jE5KXcg|16|26-516-273-2566|8031.44|AUTOMOBILE|s are quickly above the quickly ironic instructions; even requests about the carefully final deposi|
+89|Customer#000000089|dtR, y9JQWUO6FoJExyp8whOU|14|24-394-451-5404|1530.76|FURNITURE|counts are slyly beyond the slyly final accounts. quickly final ideas wake. r|
+8|Customer#000000008|I0B10bB0AymmC, 0PrRYBCP1yGJ8xcBPmWhl5|17|27-147-574-9335|6819.74|BUILDING|among the slyly regular theodolites kindle blithely courts. carefully even theodolites haggle slyly along the ide|
+90|Customer#000000090|QxCzH7VxxYUWwfL7|16|26-603-491-1238|7354.23|BUILDING|sly across the furiously even |
+91|Customer#000000091|S8OMYFrpHwoNHaGBeuS6E 6zhHGZiprw1b7 q|8|18-239-400-3677|4643.14|AUTOMOBILE|onic accounts. fluffily silent pinto beans boost blithely according to the fluffily exp|
+92|Customer#000000092|obP PULk2LH LqNF,K9hcbNqnLAkJVsl5xqSrY,|2|12-446-416-8471|1182.91|MACHINERY|. pinto beans hang slyly final deposits. ac|
+93|Customer#000000093|EHXBr2QGdh|7|17-359-388-5266|2182.52|MACHINERY|press deposits. carefully regular platelets r|
+94|Customer#000000094|IfVNIN9KtkScJ9dUjK3Pg5gY1aFeaXewwf|9|19-953-499-8833|5500.11|HOUSEHOLD|latelets across the bold, final requests sleep according to the fluffily bold accounts. unusual deposits amon|
+95|Customer#000000095|EU0xvmWvOmUUn5J,2z85DQyG7QCJ9Xq7|15|25-923-255-2929|5327.38|MACHINERY|ithely. ruthlessly final requests wake slyly alongside of the furiously silent pinto beans. even the|
+96|Customer#000000096|vWLOrmXhRR|8|18-422-845-1202|6323.92|AUTOMOBILE|press requests believe furiously. carefully final instructions snooze carefully. |
+97|Customer#000000097|OApyejbhJG,0Iw3j rd1M|17|27-588-919-5638|2164.48|AUTOMOBILE|haggle slyly. bold, special ideas are blithely above the thinly bold theo|
+98|Customer#000000098|7yiheXNSpuEAwbswDW|12|22-885-845-6889|-551.37|BUILDING|ages. furiously pending accounts are quickly carefully final foxes: busily pe|
+99|Customer#000000099|szsrOiPtCHVS97Lt|15|25-515-237-9232|4088.65|HOUSEHOLD|cajole slyly about the regular theodolites! furiously bold requests nag along the pending, regular packages. somas|
+9|Customer#000000009|xKiAFTjUsCuxfeleNqefumTrjS|8|18-338-906-3675|8324.07|FURNITURE|r theodolites according to the requests wake thinly excuses: pending requests haggle furiousl|
diff --git a/hyracks/hyracks-hdfs/src/test/resources/expected/part-1 b/hyracks/hyracks-hdfs/src/test/resources/expected/part-1
deleted file mode 100755
index e7655d1..0000000
--- a/hyracks/hyracks-hdfs/src/test/resources/expected/part-1
+++ /dev/null
@@ -1,73 +0,0 @@
-78|Customer#000000078|HBOta,ZNqpg3U2cSL0kbrftkPwzX|9|19-960-700-9191|7136.97|FURNITURE|ests. blithely bold pinto beans h|
-79|Customer#000000079|n5hH2ftkVRwW8idtD,BmM2|15|25-147-850-4166|5121.28|MACHINERY|es. packages haggle furiously. regular, special requests poach after the quickly express ideas. blithely pending re|
-80|Customer#000000080|K,vtXp8qYB |0|10-267-172-7101|7383.53|FURNITURE|tect among the dependencies. bold accounts engage closely even pinto beans. ca|
-81|Customer#000000081|SH6lPA7JiiNC6dNTrR|20|30-165-277-3269|2023.71|BUILDING|r packages. fluffily ironic requests cajole fluffily. ironically regular theodolit|
-82|Customer#000000082|zhG3EZbap4c992Gj3bK,3Ne,Xn|18|28-159-442-5305|9468.34|AUTOMOBILE|s wake. bravely regular accounts are furiously. regula|
-83|Customer#000000083|HnhTNB5xpnSF20JBH4Ycs6psVnkC3RDf|22|32-817-154-4122|6463.51|BUILDING|ccording to the quickly bold warhorses. final, regular foxes integrate carefully. bold packages nag blithely ev|
-84|Customer#000000084|lpXz6Fwr9945rnbtMc8PlueilS1WmASr CB|11|21-546-818-3802|5174.71|FURNITURE|ly blithe foxes. special asymptotes haggle blithely against the furiously regular depo|
-85|Customer#000000085|siRerlDwiolhYR 8FgksoezycLj|5|15-745-585-8219|3386.64|FURNITURE|ronic ideas use above the slowly pendin|
-86|Customer#000000086|US6EGGHXbTTXPL9SBsxQJsuvy|0|10-677-951-2353|3306.32|HOUSEHOLD|quests. pending dugouts are carefully aroun|
-87|Customer#000000087|hgGhHVSWQl 6jZ6Ev|23|33-869-884-7053|6327.54|FURNITURE|hely ironic requests integrate according to the ironic accounts. slyly regular pla|
-88|Customer#000000088|wtkjBN9eyrFuENSMmMFlJ3e7jE5KXcg|16|26-516-273-2566|8031.44|AUTOMOBILE|s are quickly above the quickly ironic instructions; even requests about the carefully final deposi|
-89|Customer#000000089|dtR, y9JQWUO6FoJExyp8whOU|14|24-394-451-5404|1530.76|FURNITURE|counts are slyly beyond the slyly final accounts. quickly final ideas wake. r|
-90|Customer#000000090|QxCzH7VxxYUWwfL7|16|26-603-491-1238|7354.23|BUILDING|sly across the furiously even |
-91|Customer#000000091|S8OMYFrpHwoNHaGBeuS6E 6zhHGZiprw1b7 q|8|18-239-400-3677|4643.14|AUTOMOBILE|onic accounts. fluffily silent pinto beans boost blithely according to the fluffily exp|
-92|Customer#000000092|obP PULk2LH LqNF,K9hcbNqnLAkJVsl5xqSrY,|2|12-446-416-8471|1182.91|MACHINERY|. pinto beans hang slyly final deposits. ac|
-93|Customer#000000093|EHXBr2QGdh|7|17-359-388-5266|2182.52|MACHINERY|press deposits. carefully regular platelets r|
-94|Customer#000000094|IfVNIN9KtkScJ9dUjK3Pg5gY1aFeaXewwf|9|19-953-499-8833|5500.11|HOUSEHOLD|latelets across the bold, final requests sleep according to the fluffily bold accounts. unusual deposits amon|
-95|Customer#000000095|EU0xvmWvOmUUn5J,2z85DQyG7QCJ9Xq7|15|25-923-255-2929|5327.38|MACHINERY|ithely. ruthlessly final requests wake slyly alongside of the furiously silent pinto beans. even the|
-96|Customer#000000096|vWLOrmXhRR|8|18-422-845-1202|6323.92|AUTOMOBILE|press requests believe furiously. carefully final instructions snooze carefully. |
-97|Customer#000000097|OApyejbhJG,0Iw3j rd1M|17|27-588-919-5638|2164.48|AUTOMOBILE|haggle slyly. bold, special ideas are blithely above the thinly bold theo|
-98|Customer#000000098|7yiheXNSpuEAwbswDW|12|22-885-845-6889|-551.37|BUILDING|ages. furiously pending accounts are quickly carefully final foxes: busily pe|
-99|Customer#000000099|szsrOiPtCHVS97Lt|15|25-515-237-9232|4088.65|HOUSEHOLD|cajole slyly about the regular theodolites! furiously bold requests nag along the pending, regular packages. somas|
-100|Customer#000000100|fptUABXcmkC5Wx|20|30-749-445-4907|9889.89|FURNITURE|was furiously fluffily quiet deposits. silent, pending requests boost against |
-101|Customer#000000101|sMmL2rNeHDltovSm Y|2|12-514-298-3699|7470.96|MACHINERY| sleep. pending packages detect slyly ironic pack|
-102|Customer#000000102|UAtflJ06 fn9zBfKjInkQZlWtqaA|19|29-324-978-8538|8462.17|BUILDING|ously regular dependencies nag among the furiously express dinos. blithely final|
-103|Customer#000000103|8KIsQX4LJ7QMsj6DrtFtXu0nUEdV,8a|9|19-216-107-2107|2757.45|BUILDING|furiously pending notornis boost slyly around the blithely ironic ideas? final, even instructions cajole fl|
-104|Customer#000000104|9mcCK L7rt0SwiYtrbO88DiZS7U d7M|10|20-966-284-8065|-588.38|FURNITURE|rate carefully slyly special pla|
-105|Customer#000000105|4iSJe4L SPjg7kJj98Yz3z0B|10|20-793-553-6417|9091.82|MACHINERY|l pains cajole even accounts. quietly final instructi|
-106|Customer#000000106|xGCOEAUjUNG|1|11-751-989-4627|3288.42|MACHINERY|lose slyly. ironic accounts along the evenly regular theodolites wake about the special, final gifts. |
-107|Customer#000000107|Zwg64UZ,q7GRqo3zm7P1tZIRshBDz|15|25-336-529-9919|2514.15|AUTOMOBILE|counts cajole slyly. regular requests wake. furiously regular deposits about the blithely final fo|
-108|Customer#000000108|GPoeEvpKo1|5|15-908-619-7526|2259.38|BUILDING|refully ironic deposits sleep. regular, unusual requests wake slyly|
-109|Customer#000000109|OOOkYBgCMzgMQXUmkocoLb56rfrdWp2NE2c|16|26-992-422-8153|-716.10|BUILDING|es. fluffily final dependencies sleep along the blithely even pinto beans. final deposits haggle furiously furiou|
-110|Customer#000000110|mymPfgphaYXNYtk|10|20-893-536-2069|7462.99|AUTOMOBILE|nto beans cajole around the even, final deposits. quickly bold packages according to the furiously regular dept|
-111|Customer#000000111|CBSbPyOWRorloj2TBvrK9qp9tHBs|22|32-582-283-7528|6505.26|MACHINERY|ly unusual instructions detect fluffily special deposits-- theodolites nag carefully during the ironic dependencies|
-112|Customer#000000112|RcfgG3bO7QeCnfjqJT1|19|29-233-262-8382|2953.35|FURNITURE|rmanently unusual multipliers. blithely ruthless deposits are furiously along the|
-113|Customer#000000113|eaOl5UBXIvdY57rglaIzqvfPD,MYfK|12|22-302-930-4756|2912.00|BUILDING|usly regular theodolites boost furiously doggedly pending instructio|
-114|Customer#000000114|xAt 5f5AlFIU|14|24-805-212-7646|1027.46|FURNITURE|der the carefully express theodolites are after the packages. packages are. bli|
-115|Customer#000000115|0WFt1IXENmUT2BgbsB0ShVKJZt0HCBCbFl0aHc|8|18-971-699-1843|7508.92|HOUSEHOLD|sits haggle above the carefully ironic theodolite|
-116|Customer#000000116|yCuVxIgsZ3,qyK2rloThy3u|16|26-632-309-5792|8403.99|BUILDING|as. quickly final sauternes haggle slyly carefully even packages. brave, ironic pinto beans are above the furious|
-117|Customer#000000117|uNhM,PzsRA3S,5Y Ge5Npuhi|24|34-403-631-3505|3950.83|FURNITURE|affix. instructions are furiously sl|
-118|Customer#000000118|OVnFuHygK9wx3xpg8|18|28-639-943-7051|3582.37|AUTOMOBILE|uick packages alongside of the furiously final deposits haggle above the fluffily even foxes. blithely dogged dep|
-119|Customer#000000119|M1ETOIecuvH8DtM0Y0nryXfW|7|17-697-919-8406|3930.35|FURNITURE|express ideas. blithely ironic foxes thrash. special acco|
-120|Customer#000000120|zBNna00AEInqyO1|12|22-291-534-1571|363.75|MACHINERY| quickly. slyly ironic requests cajole blithely furiously final dependen|
-121|Customer#000000121|tv nCR2YKupGN73mQudO|17|27-411-990-2959|6428.32|BUILDING|uriously stealthy ideas. carefully final courts use carefully|
-122|Customer#000000122|yp5slqoNd26lAENZW3a67wSfXA6hTF|3|13-702-694-4520|7865.46|HOUSEHOLD| the special packages hinder blithely around the permanent requests. bold depos|
-123|Customer#000000123|YsOnaaER8MkvK5cpf4VSlq|5|15-817-151-1168|5897.83|BUILDING|ependencies. regular, ironic requests are fluffily regu|
-124|Customer#000000124|aTbyVAW5tCd,v09O|18|28-183-750-7809|1842.49|AUTOMOBILE|le fluffily even dependencies. quietly s|
-125|Customer#000000125|,wSZXdVR xxIIfm9s8ITyLl3kgjT6UC07GY0Y|19|29-261-996-3120|-234.12|FURNITURE|x-ray finally after the packages? regular requests c|
-126|Customer#000000126|ha4EHmbx3kg DYCsP6DFeUOmavtQlHhcfaqr|22|32-755-914-7592|1001.39|HOUSEHOLD|s about the even instructions boost carefully furiously ironic pearls. ruthless, |
-127|Customer#000000127|Xyge4DX2rXKxXyye1Z47LeLVEYMLf4Bfcj|21|31-101-672-2951|9280.71|MACHINERY|ic, unusual theodolites nod silently after the final, ironic instructions: pending r|
-128|Customer#000000128|AmKUMlJf2NRHcKGmKjLS|4|14-280-874-8044|-986.96|HOUSEHOLD|ing packages integrate across the slyly unusual dugouts. blithely silent ideas sublate carefully. blithely expr|
-129|Customer#000000129|q7m7rbMM0BpaCdmxloCgBDRCleXsXkdD8kf|7|17-415-148-7416|9127.27|HOUSEHOLD| unusual deposits boost carefully furiously silent ideas. pending accounts cajole slyly across|
-130|Customer#000000130|RKPx2OfZy0Vn 8wGWZ7F2EAvmMORl1k8iH|9|19-190-993-9281|5073.58|HOUSEHOLD|ix slowly. express packages along the furiously ironic requests integrate daringly deposits. fur|
-131|Customer#000000131|jyN6lAjb1FtH10rMC,XzlWyCBrg75|11|21-840-210-3572|8595.53|HOUSEHOLD|jole special packages. furiously final dependencies about the furiously speci|
-132|Customer#000000132|QM5YabAsTLp9|4|14-692-150-9717|162.57|HOUSEHOLD|uickly carefully special theodolites. carefully regular requests against the blithely unusual instructions |
-133|Customer#000000133|IMCuXdpIvdkYO92kgDGuyHgojcUs88p|17|27-408-997-8430|2314.67|AUTOMOBILE|t packages. express pinto beans are blithely along the unusual, even theodolites. silent packages use fu|
-134|Customer#000000134|sUiZ78QCkTQPICKpA9OBzkUp2FM|11|21-200-159-5932|4608.90|BUILDING|yly fluffy foxes boost final ideas. b|
-135|Customer#000000135|oZK,oC0 fdEpqUML|19|29-399-293-6241|8732.91|FURNITURE| the slyly final accounts. deposits cajole carefully. carefully sly packag|
-136|Customer#000000136|QoLsJ0v5C1IQbh,DS1|7|17-501-210-4726|-842.39|FURNITURE|ackages sleep ironic, final courts. even requests above the blithely bold requests g|
-137|Customer#000000137|cdW91p92rlAEHgJafqYyxf1Q|16|26-777-409-5654|7838.30|HOUSEHOLD|carefully regular theodolites use. silent dolphins cajo|
-138|Customer#000000138|5uyLAeY7HIGZqtu66Yn08f|5|15-394-860-4589|430.59|MACHINERY|ts doze on the busy ideas. regular|
-139|Customer#000000139|3ElvBwudHKL02732YexGVFVt |9|19-140-352-1403|7897.78|MACHINERY|nstructions. quickly ironic ideas are carefully. bold, |
-140|Customer#000000140|XRqEPiKgcETII,iOLDZp5jA|4|14-273-885-6505|9963.15|MACHINERY|ies detect slyly ironic accounts. slyly ironic theodolites hag|
-141|Customer#000000141|5IW,WROVnikc3l7DwiUDGQNGsLBGOL6Dc0|1|11-936-295-6204|6706.14|FURNITURE|packages nag furiously. carefully unusual accounts snooze according to the fluffily regular pinto beans. slyly spec|
-142|Customer#000000142|AnJ5lxtLjioClr2khl9pb8NLxG2,|9|19-407-425-2584|2209.81|AUTOMOBILE|. even, express theodolites upo|
-143|Customer#000000143|681r22uL452zqk 8By7I9o9enQfx0|16|26-314-406-7725|2186.50|MACHINERY|across the blithely unusual requests haggle theodo|
-144|Customer#000000144|VxYZ3ebhgbltnetaGjNC8qCccjYU05 fePLOno8y|1|11-717-379-4478|6417.31|MACHINERY|ges. slyly regular accounts are slyly. bold, idle reque|
-145|Customer#000000145|kQjHmt2kcec cy3hfMh969u|13|23-562-444-8454|9748.93|HOUSEHOLD|ests? express, express instructions use. blithely fina|
-146|Customer#000000146|GdxkdXG9u7iyI1,,y5tq4ZyrcEy|3|13-835-723-3223|3328.68|FURNITURE|ffily regular dinos are slyly unusual requests. slyly specia|
-147|Customer#000000147|6VvIwbVdmcsMzuu,C84GtBWPaipGfi7DV|18|28-803-187-4335|8071.40|AUTOMOBILE|ress packages above the blithely regular packages sleep fluffily blithely ironic accounts. |
-148|Customer#000000148|BhSPlEWGvIJyT9swk vCWE|11|21-562-498-6636|2135.60|HOUSEHOLD|ing to the carefully ironic requests. carefully regular dependencies about the theodolites wake furious|
-149|Customer#000000149|3byTHCp2mNLPigUrrq|19|29-797-439-6760|8959.65|AUTOMOBILE|al instructions haggle against the slyly bold w|
-150|Customer#000000150|zeoGShTjCwGPplOWFkLURrh41O0AZ8dwNEEN4 |18|28-328-564-7630|3849.48|MACHINERY|ole blithely among the furiously pending packages. furiously bold ideas wake fluffily ironic idea|
diff --git a/hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/mapred-site.xml b/hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/mapred-site.xml
index 2904fef..a8680ec 100644
--- a/hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/mapred-site.xml
+++ b/hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/mapred-site.xml
@@ -19,7 +19,7 @@
    </property>
    <property>
       <name>mapred.min.split.size</name>
-      <value>8192</value>
+      <value>2048</value>
    </property>
 
 </configuration>
diff --git a/hyracks/hyracks-server/pom.xml b/hyracks/hyracks-server/pom.xml
index 2699c27..6c6640e 100644
--- a/hyracks/hyracks-server/pom.xml
+++ b/hyracks/hyracks-server/pom.xml
@@ -22,6 +22,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/pom.xml b/hyracks/pom.xml
index 2edd6be..09925fb 100644
--- a/hyracks/pom.xml
+++ b/hyracks/pom.xml
@@ -29,6 +29,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
+        <version>2.13</version>
         <configuration>
             <forkMode>pertest</forkMode>
             <argLine>-enableassertions -Djava.util.logging.config.file=${user.home}/logging.properties -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8000,suspend=n ${jvm.extraargs}</argLine>
@@ -42,6 +43,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-changelog-plugin</artifactId>
+        <version>2.2</version>
       </plugin>
     </plugins>
   </reporting>
diff --git a/pregelix/pom.xml b/pregelix/pom.xml
index 4b6a968..7d08fb7 100644
--- a/pregelix/pom.xml
+++ b/pregelix/pom.xml
@@ -44,6 +44,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
+        <version>2.13</version>
         <configuration>
             <forkMode>pertest</forkMode>
             <argLine>-enableassertions -Djava.util.logging.config.file=${user.home}/logging.properties -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8000,suspend=n ${jvm.extraargs}</argLine>
@@ -57,6 +58,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-changelog-plugin</artifactId>
+        <version>2.2</version>
       </plugin>
     </plugins>
   </reporting>
diff --git a/pregelix/pregelix-api/pom.xml b/pregelix/pregelix-api/pom.xml
index 66a0186..2caa93b 100644
--- a/pregelix/pregelix-api/pom.xml
+++ b/pregelix/pregelix-api/pom.xml
@@ -41,6 +41,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-core/pom.xml b/pregelix/pregelix-core/pom.xml
index f17ed08..1618810 100644
--- a/pregelix/pregelix-core/pom.xml
+++ b/pregelix/pregelix-core/pom.xml
@@ -19,6 +19,7 @@
 		<plugins>
 			<plugin>
 				<artifactId>maven-jar-plugin</artifactId>
+				<version>2.4</version>
 				<executions>
 					<execution>
 						<id>balancer</id>
@@ -38,11 +39,6 @@
 							</includes>
 						</configuration>
 					</execution>
-				</executions>
-			</plugin>
-			<plugin>
-				<artifactId>maven-jar-plugin</artifactId>
-				<executions>
 					<execution>
 						<id>generator</id>
 						<goals>
@@ -61,11 +57,6 @@
 							</includes>
 						</configuration>
 					</execution>
-				</executions>
-			</plugin>
-			<plugin>
-				<artifactId>maven-jar-plugin</artifactId>
-				<executions>
 					<execution>
 						<id>patch</id>
 						<goals>
@@ -94,6 +85,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>appassembler-maven-plugin</artifactId>
+				<version>1.3</version>
 				<executions>
 					<execution>
 						<configuration>
@@ -203,6 +195,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-dataflow-std-base/pom.xml b/pregelix/pregelix-dataflow-std-base/pom.xml
index 53d7c22..05a1508 100644
--- a/pregelix/pregelix-dataflow-std-base/pom.xml
+++ b/pregelix/pregelix-dataflow-std-base/pom.xml
@@ -42,6 +42,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-dataflow-std/pom.xml b/pregelix/pregelix-dataflow-std/pom.xml
index cc9a184..36b0eb8 100644
--- a/pregelix/pregelix-dataflow-std/pom.xml
+++ b/pregelix/pregelix-dataflow-std/pom.xml
@@ -42,6 +42,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-dataflow/pom.xml b/pregelix/pregelix-dataflow/pom.xml
index aaa7186..9454ece 100644
--- a/pregelix/pregelix-dataflow/pom.xml
+++ b/pregelix/pregelix-dataflow/pom.xml
@@ -42,6 +42,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-dist/pom.xml b/pregelix/pregelix-dist/pom.xml
index 4cb0387..aa3d541 100644
--- a/pregelix/pregelix-dist/pom.xml
+++ b/pregelix/pregelix-dist/pom.xml
@@ -70,7 +70,7 @@
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-core</artifactId>
 			<version>0.2.3-SNAPSHOT</version>
-			<scope>comile</scope>
+			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
diff --git a/pregelix/pregelix-example/pom.xml b/pregelix/pregelix-example/pom.xml
index 6b9bc89..ce8f985 100644
--- a/pregelix/pregelix-example/pom.xml
+++ b/pregelix/pregelix-example/pom.xml
@@ -41,6 +41,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>appassembler-maven-plugin</artifactId>
+				<version>1.3</version>
 				<executions>
 					<execution>
 						<configuration>
@@ -76,6 +77,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-runtime/pom.xml b/pregelix/pregelix-runtime/pom.xml
index d12cb36..1c414ff 100644
--- a/pregelix/pregelix-runtime/pom.xml
+++ b/pregelix/pregelix-runtime/pom.xml
@@ -42,6 +42,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>