diff --git a/hyracks/hyracks-examples/tpch-example/pom.xml b/hyracks/hyracks-examples/tpch-example/pom.xml
new file mode 100644
index 0000000..08c283e
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/pom.xml
@@ -0,0 +1,13 @@
+<project>
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>edu.uci.ics.hyracks.examples</groupId>
+  <artifactId>tpch-example</artifactId>
+  <version>0.0.1</version>
+  <packaging>pom</packaging>
+
+  <modules>
+    <module>tpchhelper</module>
+    <module>tpchclient</module>
+    <module>tpchapp</module>
+  </modules>
+</project>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchapp/pom.xml b/hyracks/hyracks-examples/tpch-example/tpchapp/pom.xml
new file mode 100644
index 0000000..9ad9724
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchapp/pom.xml
@@ -0,0 +1,52 @@
+<project>
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>edu.uci.ics.hyracks.examples.tpch</groupId>
+  <artifactId>tpchapp</artifactId>
+  <version>0.0.1</version>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>copy-dependencies</id>
+            <phase>package</phase>
+            <goals>
+              <goal>copy-dependencies</goal>
+            </goals>
+            <configuration>
+              <outputDirectory>target/application/lib</outputDirectory>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <artifactId>maven-assembly-plugin</artifactId>
+        <version>2.2-beta-5</version>
+        <executions>
+          <execution>
+            <configuration>
+              <descriptors>
+                <descriptor>src/main/assembly/app-assembly.xml</descriptor>
+              </descriptors>
+            </configuration>
+            <phase>package</phase>
+            <goals>
+              <goal>attached</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+  <dependencies>
+  	<dependency>
+  		<groupId>edu.uci.ics.hyracks.examples.tpch</groupId>
+  		<artifactId>tpchhelper</artifactId>
+  		<version>0.0.1</version>
+  		<scope>compile</scope>
+  	</dependency>
+  </dependencies>
+</project>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchapp/src/main/assembly/app-assembly.xml b/hyracks/hyracks-examples/tpch-example/tpchapp/src/main/assembly/app-assembly.xml
new file mode 100644
index 0000000..43ace6c
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchapp/src/main/assembly/app-assembly.xml
@@ -0,0 +1,13 @@
+<assembly>
+  <id>app-assembly</id>
+  <formats>
+    <format>zip</format>
+  </formats>
+  <includeBaseDirectory>false</includeBaseDirectory>
+  <fileSets>
+    <fileSet>
+      <directory>target/application/lib</directory>
+      <outputDirectory>lib</outputDirectory>
+    </fileSet>
+  </fileSets>
+</assembly>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/.classpath b/hyracks/hyracks-examples/tpch-example/tpchclient/.classpath
new file mode 100644
index 0000000..1f3c1ff
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/.classpath
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
+	<classpathentry kind="con" path="org.maven.ide.eclipse.MAVEN2_CLASSPATH_CONTAINER"/>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/.project b/hyracks/hyracks-examples/tpch-example/tpchclient/.project
new file mode 100644
index 0000000..b0effc6
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/.project
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>tpchclient</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.maven.ide.eclipse.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.maven.ide.eclipse.maven2Nature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/.settings/org.eclipse.jdt.core.prefs b/hyracks/hyracks-examples/tpch-example/tpchclient/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..2f0f2e3
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,6 @@
+#Wed Aug 11 19:09:15 PDT 2010
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
+org.eclipse.jdt.core.compiler.compliance=1.6
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.source=1.6
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/.settings/org.maven.ide.eclipse.prefs b/hyracks/hyracks-examples/tpch-example/tpchclient/.settings/org.maven.ide.eclipse.prefs
new file mode 100644
index 0000000..1b13d8b
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/.settings/org.maven.ide.eclipse.prefs
@@ -0,0 +1,9 @@
+#Wed Aug 11 19:09:15 PDT 2010
+activeProfiles=
+eclipse.preferences.version=1
+fullBuildGoals=process-test-resources
+includeModules=false
+resolveWorkspaceProjects=true
+resourceFilterGoals=process-resources resources\:testResources
+skipCompilerPlugin=true
+version=1
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml b/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
new file mode 100644
index 0000000..648bdcf
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
@@ -0,0 +1,56 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>edu.uci.ics.hyracks.examples.tpch</groupId>
+  <artifactId>tpchclient</artifactId>
+  <version>0.0.1</version>
+  <dependencies>
+  	<dependency>
+  		<groupId>edu.uci.ics.hyracks</groupId>
+  		<artifactId>hyracks-dataflow-std</artifactId>
+  		<version>0.1.0</version>
+  		<scope>compile</scope>
+  	</dependency>
+  	<dependency>
+  		<groupId>edu.uci.ics.hyracks.examples.tpch</groupId>
+  		<artifactId>tpchhelper</artifactId>
+  		<version>0.0.1</version>
+  		<type>jar</type>
+  		<scope>compile</scope>
+  	</dependency>
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.0.2</version>
+        <configuration>
+          <source>1.6</source>
+          <target>1.6</target>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>appassembler-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <configuration>
+              <programs>
+                <program>
+                  <mainClass>edu.uci.ics.hyracks.examples.tpch.client.Main</mainClass>
+                  <name>tpchclient</name>
+                </program>
+              </programs>
+              <repositoryLayout>flat</repositoryLayout>
+              <repositoryName>lib</repositoryName>
+            </configuration>
+            <phase>package</phase>
+            <goals>
+              <goal>assemble</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/src/main/java/edu/uci/ics/hyracks/examples/tpch/client/Main.java b/hyracks/hyracks-examples/tpch-example/tpchclient/src/main/java/edu/uci/ics/hyracks/examples/tpch/client/Main.java
new file mode 100644
index 0000000..cefb997
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/src/main/java/edu/uci/ics/hyracks/examples/tpch/client/Main.java
@@ -0,0 +1,178 @@
+package edu.uci.ics.hyracks.examples.tpch.client;
+
+import java.io.File;
+import java.util.UUID;
+
+import edu.uci.ics.hyracks.api.client.HyracksRMIConnection;
+import edu.uci.ics.hyracks.api.client.IHyracksClientConnection;
+import edu.uci.ics.hyracks.api.constraints.AbsoluteLocationConstraint;
+import edu.uci.ics.hyracks.api.constraints.ChoiceLocationConstraint;
+import edu.uci.ics.hyracks.api.constraints.ExplicitPartitionConstraint;
+import edu.uci.ics.hyracks.api.constraints.LocationConstraint;
+import edu.uci.ics.hyracks.api.constraints.PartitionConstraint;
+import edu.uci.ics.hyracks.api.constraints.PartitionCountConstraint;
+import edu.uci.ics.hyracks.api.dataflow.IConnectorDescriptor;
+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.JobSpecification;
+import edu.uci.ics.hyracks.dataflow.common.data.comparators.StringBinaryComparatorFactory;
+import edu.uci.ics.hyracks.dataflow.common.data.hash.StringBinaryHashFunctionFactory;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.StringSerializerDeserializer;
+import edu.uci.ics.hyracks.dataflow.common.data.partition.FieldHashPartitionComputerFactory;
+import edu.uci.ics.hyracks.dataflow.std.connectors.MToNHashPartitioningConnectorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.connectors.OneToOneConnectorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.file.CSVFileScanOperatorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
+import edu.uci.ics.hyracks.dataflow.std.group.HashGroupOperatorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.join.InMemoryHashJoinOperatorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.misc.PrinterOperatorDescriptor;
+import edu.uci.ics.hyracks.examples.tpch.helper.CountAccumulatingAggregatorFactory;
+
+public class Main {
+    public static void main(String[] args) throws Exception {
+        String appName = args[0];
+        String host;
+        int port = 1099;
+        switch (args.length) {
+            case 3:
+                port = Integer.parseInt(args[2]);
+            case 2:
+                host = args[1];
+                break;
+            default:
+                System.err.println("One or Two arguments expected: <cchost> [<ccport>]");
+                return;
+        }
+        IHyracksClientConnection hcc = new HyracksRMIConnection(host, port);
+
+        JobSpecification job = createJob();
+
+        long start = System.currentTimeMillis();
+        UUID jobId = hcc.createJob(appName, job);
+        hcc.start(jobId);
+        hcc.waitForCompletion(jobId);
+        long end = System.currentTimeMillis();
+        System.err.println(start + " " + end + " " + (end - start));
+    }
+
+    private static JobSpecification createJob() {
+        JobSpecification spec = new JobSpecification();
+
+        FileSplit[] custSplits = createCustomerFileSplits();
+        RecordDescriptor custDesc = new RecordDescriptor(new ISerializerDeserializer[] {
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE });
+
+        FileSplit[] ordersSplits = createOrdersFileSplits();
+        RecordDescriptor ordersDesc = new RecordDescriptor(new ISerializerDeserializer[] {
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE });
+
+        RecordDescriptor custOrderJoinDesc = new RecordDescriptor(new ISerializerDeserializer[] {
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE, StringSerializerDeserializer.INSTANCE,
+                StringSerializerDeserializer.INSTANCE });
+
+        CSVFileScanOperatorDescriptor ordScanner = new CSVFileScanOperatorDescriptor(spec, ordersSplits, ordersDesc,
+                '|', "'\"");
+        ordScanner.setPartitionConstraint(createRRPartitionConstraint(10));
+
+        CSVFileScanOperatorDescriptor custScanner = new CSVFileScanOperatorDescriptor(spec, custSplits, custDesc, '|',
+                "'\"");
+        custScanner.setPartitionConstraint(createRRPartitionConstraint(10));
+
+        InMemoryHashJoinOperatorDescriptor join = new InMemoryHashJoinOperatorDescriptor(spec, new int[] { 0 },
+                new int[] { 1 }, new IBinaryHashFunctionFactory[] { StringBinaryHashFunctionFactory.INSTANCE },
+                new IBinaryComparatorFactory[] { StringBinaryComparatorFactory.INSTANCE }, custOrderJoinDesc, 6000000);
+        join.setPartitionConstraint(new PartitionCountConstraint(40));
+
+        RecordDescriptor groupResultDesc = new RecordDescriptor(new ISerializerDeserializer[] {
+                StringSerializerDeserializer.INSTANCE, IntegerSerializerDeserializer.INSTANCE });
+
+        HashGroupOperatorDescriptor gby = new HashGroupOperatorDescriptor(spec, new int[] { 6 },
+                new FieldHashPartitionComputerFactory(new int[] { 6 },
+                        new IBinaryHashFunctionFactory[] { StringBinaryHashFunctionFactory.INSTANCE }),
+                new IBinaryComparatorFactory[] { StringBinaryComparatorFactory.INSTANCE },
+                new CountAccumulatingAggregatorFactory(), groupResultDesc, 16);
+        gby.setPartitionConstraint(new PartitionCountConstraint(40));
+
+        PrinterOperatorDescriptor printer = new PrinterOperatorDescriptor(spec);
+        printer.setPartitionConstraint(new PartitionCountConstraint(40));
+
+        IConnectorDescriptor ordJoinConn = new MToNHashPartitioningConnectorDescriptor(spec,
+                new FieldHashPartitionComputerFactory(new int[] { 1 },
+                        new IBinaryHashFunctionFactory[] { StringBinaryHashFunctionFactory.INSTANCE }));
+        spec.connect(ordJoinConn, ordScanner, 0, join, 1);
+
+        IConnectorDescriptor custJoinConn = new MToNHashPartitioningConnectorDescriptor(spec,
+                new FieldHashPartitionComputerFactory(new int[] { 0 },
+                        new IBinaryHashFunctionFactory[] { StringBinaryHashFunctionFactory.INSTANCE }));
+        spec.connect(custJoinConn, custScanner, 0, join, 0);
+
+        IConnectorDescriptor joinGroupConn = new MToNHashPartitioningConnectorDescriptor(spec,
+                new FieldHashPartitionComputerFactory(new int[] { 6 },
+                        new IBinaryHashFunctionFactory[] { StringBinaryHashFunctionFactory.INSTANCE }));
+        spec.connect(joinGroupConn, join, 0, gby, 0);
+
+        IConnectorDescriptor gbyPrinterConn = new OneToOneConnectorDescriptor(spec);
+        spec.connect(gbyPrinterConn, gby, 0, printer, 0);
+
+        spec.addRoot(printer);
+        return spec;
+    }
+
+    private static FileSplit[] createOrdersFileSplits() {
+        FileSplit fss[] = new FileSplit[40];
+        for (int i = 0; i < fss.length; ++i) {
+            fss[i] = new FileSplit("foo", new File("/home/ubuntu/vinayakb/data/tpch.40.splits/disk" + (i % 4)
+                    + "/orders" + i + ".dat"));
+        }
+        return fss;
+    }
+
+    private static FileSplit[] createCustomerFileSplits() {
+        FileSplit fss[] = new FileSplit[40];
+        for (int i = 0; i < fss.length; ++i) {
+            fss[i] = new FileSplit("foo", new File("/home/ubuntu/vinayakb/data/tpch.40.splits/disk" + (i % 4)
+                    + "/customer" + i + ".dat"));
+        }
+        return fss;
+    }
+
+    private static final LocationConstraint[] LCS = { new AbsoluteLocationConstraint("asterix-001"),
+            new AbsoluteLocationConstraint("asterix-002"), new AbsoluteLocationConstraint("asterix-003"),
+            new AbsoluteLocationConstraint("asterix-004"), new AbsoluteLocationConstraint("asterix-005"),
+            new AbsoluteLocationConstraint("asterix-006"), new AbsoluteLocationConstraint("asterix-007"),
+            new AbsoluteLocationConstraint("asterix-008"), new AbsoluteLocationConstraint("asterix-009"),
+            new AbsoluteLocationConstraint("asterix-010"), };
+
+    private static PartitionConstraint createRRPartitionConstraint(int k) {
+        LocationConstraint[] lcs = new LocationConstraint[40];
+        for (int i = 0; i < lcs.length; ++i) {
+            lcs[i] = createRRSteppedChoiceConstraint(i, k);
+        }
+        return new ExplicitPartitionConstraint(lcs);
+    }
+
+    private static LocationConstraint createRRSteppedChoiceConstraint(int index, int choices) {
+        LocationConstraint[] lcs = new LocationConstraint[choices];
+        for (int i = 0; i < choices; ++i) {
+            lcs[i] = LCS[(index + i) % LCS.length];
+        }
+        return new ChoiceLocationConstraint(lcs);
+    }
+}
\ No newline at end of file
diff --git a/hyracks/hyracks-examples/tpch-example/tpchhelper/.classpath b/hyracks/hyracks-examples/tpch-example/tpchhelper/.classpath
new file mode 100644
index 0000000..1f3c1ff
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchhelper/.classpath
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
+	<classpathentry kind="con" path="org.maven.ide.eclipse.MAVEN2_CLASSPATH_CONTAINER"/>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchhelper/.project b/hyracks/hyracks-examples/tpch-example/tpchhelper/.project
new file mode 100644
index 0000000..41b2574
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchhelper/.project
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>tpchhelper</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.maven.ide.eclipse.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.maven.ide.eclipse.maven2Nature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchhelper/.settings/org.eclipse.jdt.core.prefs b/hyracks/hyracks-examples/tpch-example/tpchhelper/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..4898439
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchhelper/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,6 @@
+#Wed Aug 11 19:04:13 PDT 2010
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
+org.eclipse.jdt.core.compiler.compliance=1.6
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.source=1.6
diff --git a/hyracks/hyracks-examples/tpch-example/tpchhelper/.settings/org.maven.ide.eclipse.prefs b/hyracks/hyracks-examples/tpch-example/tpchhelper/.settings/org.maven.ide.eclipse.prefs
new file mode 100644
index 0000000..032b327
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchhelper/.settings/org.maven.ide.eclipse.prefs
@@ -0,0 +1,9 @@
+#Wed Aug 11 19:04:13 PDT 2010
+activeProfiles=
+eclipse.preferences.version=1
+fullBuildGoals=process-test-resources
+includeModules=false
+resolveWorkspaceProjects=true
+resourceFilterGoals=process-resources resources\:testResources
+skipCompilerPlugin=true
+version=1
diff --git a/hyracks/hyracks-examples/tpch-example/tpchhelper/pom.xml b/hyracks/hyracks-examples/tpch-example/tpchhelper/pom.xml
new file mode 100644
index 0000000..14b9ec7
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchhelper/pom.xml
@@ -0,0 +1,33 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>edu.uci.ics.hyracks.examples.tpch</groupId>
+  <artifactId>tpchhelper</artifactId>
+  <version>0.0.1</version>
+  <dependencies>
+  	<dependency>
+  		<groupId>edu.uci.ics.hyracks</groupId>
+  		<artifactId>hyracks-dataflow-std</artifactId>
+  		<version>0.1.0</version>
+  		<scope>compile</scope>
+  	</dependency>
+  	<dependency>
+  		<groupId>edu.uci.ics.hyracks</groupId>
+  		<artifactId>hyracks-api</artifactId>
+  		<version>0.1.0</version>
+  		<scope>compile</scope>
+  	</dependency>
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.0.2</version>
+        <configuration>
+          <source>1.6</source>
+          <target>1.6</target>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchhelper/src/main/java/edu/uci/ics/hyracks/examples/tpch/helper/CountAccumulatingAggregatorFactory.java b/hyracks/hyracks-examples/tpch-example/tpchhelper/src/main/java/edu/uci/ics/hyracks/examples/tpch/helper/CountAccumulatingAggregatorFactory.java
new file mode 100644
index 0000000..cbc8a57
--- /dev/null
+++ b/hyracks/hyracks-examples/tpch-example/tpchhelper/src/main/java/edu/uci/ics/hyracks/examples/tpch/helper/CountAccumulatingAggregatorFactory.java
@@ -0,0 +1,41 @@
+package edu.uci.ics.hyracks.examples.tpch.helper;
+
+import edu.uci.ics.hyracks.api.comm.IFrameTupleAccessor;
+import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.dataflow.common.comm.io.ArrayTupleBuilder;
+import edu.uci.ics.hyracks.dataflow.common.comm.io.FrameTupleAppender;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
+import edu.uci.ics.hyracks.dataflow.std.group.IAccumulatingAggregator;
+import edu.uci.ics.hyracks.dataflow.std.group.IAccumulatingAggregatorFactory;
+
+public class CountAccumulatingAggregatorFactory implements IAccumulatingAggregatorFactory {
+    private static final long serialVersionUID = 1L;
+
+    @Override
+    public IAccumulatingAggregator createAggregator(RecordDescriptor inRecordDesc, RecordDescriptor outRecordDescriptor) {
+        final ArrayTupleBuilder tb = new ArrayTupleBuilder(2);
+        return new IAccumulatingAggregator() {
+            private int count;
+
+            @Override
+            public boolean output(FrameTupleAppender appender, IFrameTupleAccessor accessor, int tIndex)
+                    throws HyracksDataException {
+                tb.reset();
+                tb.addField(accessor, tIndex, 0);
+                tb.addField(IntegerSerializerDeserializer.INSTANCE, count);
+                return appender.append(tb.getFieldEndOffsets(), tb.getByteArray(), 0, tb.getSize());
+            }
+
+            @Override
+            public void init(IFrameTupleAccessor accessor, int tIndex) throws HyracksDataException {
+                count = 0;
+            }
+
+            @Override
+            public void accumulate(IFrameTupleAccessor accessor, int tIndex) throws HyracksDataException {
+                ++count;
+            }
+        };
+    }
+}
\ No newline at end of file