diff --git a/hyracks/hyracks-hdfs/hyracks-hdfs-0.20.2/pom.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-0.20.2/pom.xml
new file mode 100644
index 0000000..4b35535
--- /dev/null
+++ b/hyracks/hyracks-hdfs/hyracks-hdfs-0.20.2/pom.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0"?>
+<project
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>edu.uci.ics.hyracks</groupId>
+  	<artifactId>hyracks-hdfs-0.20.2</artifactId>
+  	<version>0.2.3-SNAPSHOT</version>
+  	<name>hyracks-hdfs-0.20.2</name>
+	<parent>
+		<artifactId>hyracks-hdfs</artifactId>
+		<groupId>edu.uci.ics.hyracks</groupId>
+		<version>0.2.3-SNAPSHOT</version>
+	</parent>
+
+	<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.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<version>2.7.2</version>
+				<configuration>
+					<forkMode>pertest</forkMode>
+					<includes>
+						<include>**/*TestSuite.java</include>
+						<include>**/*Test.java</include>
+					</includes>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project>
diff --git a/hyracks/hyracks-hdfs/hyracks-hdfs-0.23.1/pom.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-0.23.1/pom.xml
new file mode 100644
index 0000000..62ef73a
--- /dev/null
+++ b/hyracks/hyracks-hdfs/hyracks-hdfs-0.23.1/pom.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0"?>
+<project
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>edu.uci.ics.hyracks</groupId>
+  	<artifactId>hyracks-hdfs-0.23.1</artifactId>
+  	<version>0.2.3-SNAPSHOT</version>
+  	<name>hyracks-hdfs-0.20.2</name>
+	<parent>
+		<artifactId>hyracks-hdfs</artifactId>
+		<groupId>edu.uci.ics.hyracks</groupId>
+		<version>0.2.3-SNAPSHOT</version>
+	</parent>
+	<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.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<version>2.7.2</version>
+				<configuration>
+					<forkMode>pertest</forkMode>
+					<includes>
+						<include>**/*TestSuite.java</include>
+						<include>**/*Test.java</include>
+					</includes>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project>
diff --git a/hyracks/hyracks-hdfs/hyracks-hdfs-core/pom.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-core/pom.xml
new file mode 100644
index 0000000..c9aa1b9
--- /dev/null
+++ b/hyracks/hyracks-hdfs/hyracks-hdfs-core/pom.xml
@@ -0,0 +1,163 @@
+<?xml version="1.0"?>
+<project
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+	<modelVersion>4.0.0</modelVersion>
+	<artifactId>hyracks-hdfs-core</artifactId>
+  	<name>hyracks-hdfs-core</name>
+	<parent>
+		<artifactId>hyracks-hdfs</artifactId>
+		<groupId>edu.uci.ics.hyracks</groupId>
+		<version>0.2.3-SNAPSHOT</version>
+	</parent>
+
+	<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.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<version>2.7.2</version>
+				<configuration>
+					<forkMode>pertest</forkMode>
+					<includes>
+						<include>**/*TestSuite.java</include>
+						<include>**/*Test.java</include>
+					</includes>
+				</configuration>
+			</plugin>
+			<plugin>
+				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
+				<configuration>
+					<filesets>
+						<fileset>
+							<directory>.</directory>
+							<includes>
+								<include>edu*</include>
+								<include>actual*</include>
+								<include>build*</include>
+								<include>expect*</include>
+								<include>ClusterController*</include>
+								<include>edu.uci.*</include>
+							</includes>
+						</fileset>
+					</filesets>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+	<profiles>
+		<profile>
+			<activation>
+				<activeByDefault>true</activeByDefault>
+			</activation>
+			<dependencies>
+				<dependency>
+					<groupId>org.apache.hadoop</groupId>
+					<artifactId>hadoop-core</artifactId>
+					<version>0.20.2</version>
+					<type>jar</type>
+					<scope>compile</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.apache.hadoop</groupId>
+					<artifactId>hadoop-test</artifactId>
+					<version>0.20.2</version>
+					<type>jar</type>
+					<scope>compile</scope>
+				</dependency>
+			</dependencies>
+		</profile>
+		<profile>
+			<activation>
+				<activeByDefault>false</activeByDefault>
+			</activation>
+			<id>hadoop-0.22.0</id>
+			<dependencies>
+				<dependency>
+					<groupId>org.apache.hadoop</groupId>
+					<artifactId>hadoop-common</artifactId>
+					<version>0.22.0</version>
+					<type>jar</type>
+					<scope>compile</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.apache.hadoop</groupId>
+					<artifactId>hadoop-mapred</artifactId>
+					<version>0.22.0</version>
+					<type>jar</type>
+					<scope>compile</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.apache.hadoop</groupId>
+					<artifactId>hadoop-hdfs</artifactId>
+					<version>0.22.0</version>
+					<type>jar</type>
+					<scope>compile</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.apache.hadoop</groupId>
+					<artifactId>hadoop-hdfs-test</artifactId>
+					<version>0.22.0</version>
+					<type>jar</type>
+					<scope>compile</scope>
+				</dependency>
+			</dependencies>
+		</profile>
+	</profiles>
+
+	<dependencies>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>3.8.1</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>edu.uci.ics.hyracks</groupId>
+			<artifactId>hyracks-api</artifactId>
+			<version>0.2.3-SNAPSHOT</version>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>edu.uci.ics.hyracks</groupId>
+			<artifactId>hyracks-dataflow-std</artifactId>
+			<version>0.2.3-SNAPSHOT</version>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>edu.uci.ics.hyracks</groupId>
+			<artifactId>hyracks-dataflow-common</artifactId>
+			<version>0.2.3-SNAPSHOT</version>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>edu.uci.ics.hyracks</groupId>
+			<artifactId>hyracks-control-cc</artifactId>
+			<version>0.2.3-SNAPSHOT</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>edu.uci.ics.hyracks</groupId>
+			<artifactId>hyracks-control-nc</artifactId>
+			<version>0.2.3-SNAPSHOT</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.commons</groupId>
+			<artifactId>commons-io</artifactId>
+			<version>1.3.2</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+</project>
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParser.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParser.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParser.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParser.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParserFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParserFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParserFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/api/IKeyValueParserFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriter.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriter.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriter.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriter.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriterFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriterFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriterFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/api/ITupleWriterFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/ConfFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/ConfFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/ConfFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/ConfFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSReadOperatorDescriptor.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSReadOperatorDescriptor.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSReadOperatorDescriptor.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSReadOperatorDescriptor.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSWriteOperatorDescriptor.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSWriteOperatorDescriptor.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSWriteOperatorDescriptor.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/HDFSWriteOperatorDescriptor.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/InputSplitsFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/InputSplitsFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/InputSplitsFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/dataflow/InputSplitsFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryComparatorFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryComparatorFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryComparatorFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryComparatorFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryHashFunctionFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryHashFunctionFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryHashFunctionFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/lib/RawBinaryHashFunctionFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/TextKeyValueParserFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/lib/TextKeyValueParserFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/TextKeyValueParserFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/lib/TextKeyValueParserFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/TextTupleWriterFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/lib/TextTupleWriterFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/lib/TextTupleWriterFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/lib/TextTupleWriterFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/scheduler/Scheduler.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/scheduler/Scheduler.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs/scheduler/Scheduler.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs/scheduler/Scheduler.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/ConfFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/ConfFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/ConfFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/ConfFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/FileSplitsFactory.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/FileSplitsFactory.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/FileSplitsFactory.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/FileSplitsFactory.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/HDFSReadOperatorDescriptor.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/HDFSReadOperatorDescriptor.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/HDFSReadOperatorDescriptor.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/HDFSReadOperatorDescriptor.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/HDFSWriteOperatorDescriptor.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/HDFSWriteOperatorDescriptor.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/HDFSWriteOperatorDescriptor.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/dataflow/HDFSWriteOperatorDescriptor.java
diff --git a/hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/scheduler/Scheduler.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/scheduler/Scheduler.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/main/java/edu/uci/ics/hyracks/hdfs2/scheduler/Scheduler.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/main/java/edu/uci/ics/hyracks/hdfs2/scheduler/Scheduler.java
diff --git a/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/dataflow/DataflowTest.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs/dataflow/DataflowTest.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/dataflow/DataflowTest.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs/dataflow/DataflowTest.java
diff --git a/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/scheduler/SchedulerTest.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs/scheduler/SchedulerTest.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/scheduler/SchedulerTest.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs/scheduler/SchedulerTest.java
diff --git a/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/utils/HyracksUtils.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs/utils/HyracksUtils.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/utils/HyracksUtils.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs/utils/HyracksUtils.java
diff --git a/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/utils/TestUtils.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs/utils/TestUtils.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs/utils/TestUtils.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs/utils/TestUtils.java
diff --git a/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs2/dataflow/DataflowTest.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs2/dataflow/DataflowTest.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs2/dataflow/DataflowTest.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs2/dataflow/DataflowTest.java
diff --git a/hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs2/scheduler/SchedulerTest.java b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs2/scheduler/SchedulerTest.java
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/java/edu/uci/ics/hyracks/hdfs2/scheduler/SchedulerTest.java
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/java/edu/uci/ics/hyracks/hdfs2/scheduler/SchedulerTest.java
diff --git a/hyracks/hyracks-hdfs/src/test/resources/data/customer.tbl b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/data/customer.tbl
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/resources/data/customer.tbl
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/data/customer.tbl
diff --git a/hyracks/hyracks-hdfs/src/test/resources/expected/part-0 b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/expected/part-0
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/resources/expected/part-0
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/expected/part-0
diff --git a/hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/core-site.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/hadoop/conf/core-site.xml
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/core-site.xml
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/hadoop/conf/core-site.xml
diff --git a/hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/hdfs-site.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/hadoop/conf/hdfs-site.xml
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/hdfs-site.xml
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/hadoop/conf/hdfs-site.xml
diff --git a/hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/log4j.properties b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/hadoop/conf/log4j.properties
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/log4j.properties
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/hadoop/conf/log4j.properties
diff --git a/hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/mapred-site.xml b/hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/hadoop/conf/mapred-site.xml
similarity index 100%
rename from hyracks/hyracks-hdfs/src/test/resources/hadoop/conf/mapred-site.xml
rename to hyracks/hyracks-hdfs/hyracks-hdfs-core/src/test/resources/hadoop/conf/mapred-site.xml
diff --git a/hyracks/hyracks-hdfs/pom.xml b/hyracks/hyracks-hdfs/pom.xml
index 9e26a67..5ed76e9 100644
--- a/hyracks/hyracks-hdfs/pom.xml
+++ b/hyracks/hyracks-hdfs/pom.xml
@@ -1,165 +1,19 @@
-<?xml version="1.0"?>
-<project
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
-	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-	<modelVersion>4.0.0</modelVersion>
-	<parent>
-		<artifactId>hyracks</artifactId>
-		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.3-SNAPSHOT</version>
-	</parent>
+<?xml version="1.0" encoding="UTF-8"?>
+<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>
+  <artifactId>hyracks-hdfs</artifactId>
+  <packaging>pom</packaging>
+  <name>hyracks-hdfs</name>
 
-	<artifactId>hyracks-hdfs</artifactId>
-	<name>hyracks-hdfs</name>
+  <parent>
+    <groupId>edu.uci.ics.hyracks</groupId>
+    <artifactId>hyracks</artifactId>
+    <version>0.2.3-SNAPSHOT</version>
+  </parent>
 
-	<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.apache.maven.plugins</groupId>
-				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.7.2</version>
-				<configuration>
-					<forkMode>pertest</forkMode>
-					<includes>
-						<include>**/*TestSuite.java</include>
-						<include>**/*Test.java</include>
-					</includes>
-				</configuration>
-			</plugin>
-			<plugin>
-				<artifactId>maven-clean-plugin</artifactId>
-				<version>2.5</version>
-				<configuration>
-					<filesets>
-						<fileset>
-							<directory>.</directory>
-							<includes>
-								<include>edu*</include>
-								<include>actual*</include>
-								<include>build*</include>
-								<include>expect*</include>
-								<include>ClusterController*</include>
-								<include>edu.uci.*</include>
-							</includes>
-						</fileset>
-					</filesets>
-				</configuration>
-			</plugin>
-		</plugins>
-	</build>
-
-	<profiles>
-		<profile>
-			<activation>
-				<activeByDefault>true</activeByDefault>
-			</activation>
-			<dependencies>
-				<dependency>
-					<groupId>org.apache.hadoop</groupId>
-					<artifactId>hadoop-core</artifactId>
-					<version>0.20.2</version>
-					<type>jar</type>
-					<scope>compile</scope>
-				</dependency>
-				<dependency>
-					<groupId>org.apache.hadoop</groupId>
-					<artifactId>hadoop-test</artifactId>
-					<version>0.20.2</version>
-					<type>jar</type>
-					<scope>compile</scope>
-				</dependency>
-			</dependencies>
-		</profile>
-		<profile>
-			<activation>
-				<activeByDefault>false</activeByDefault>
-			</activation>
-			<id>hadoop-0.22.0</id>
-			<dependencies>
-				<dependency>
-					<groupId>org.apache.hadoop</groupId>
-					<artifactId>hadoop-common</artifactId>
-					<version>0.22.0</version>
-					<type>jar</type>
-					<scope>compile</scope>
-				</dependency>
-				<dependency>
-					<groupId>org.apache.hadoop</groupId>
-					<artifactId>hadoop-mapred</artifactId>
-					<version>0.22.0</version>
-					<type>jar</type>
-					<scope>compile</scope>
-				</dependency>
-				<dependency>
-					<groupId>org.apache.hadoop</groupId>
-					<artifactId>hadoop-hdfs</artifactId>
-					<version>0.22.0</version>
-					<type>jar</type>
-					<scope>compile</scope>
-				</dependency>
-				<dependency>
-					<groupId>org.apache.hadoop</groupId>
-					<artifactId>hadoop-hdfs-test</artifactId>
-					<version>0.22.0</version>
-					<type>jar</type>
-					<scope>compile</scope>
-				</dependency>
-			</dependencies>
-		</profile>
-	</profiles>
-
-	<dependencies>
-		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
-			<version>3.8.1</version>
-			<scope>test</scope>
-		</dependency>
-		<dependency>
-			<groupId>edu.uci.ics.hyracks</groupId>
-			<artifactId>hyracks-api</artifactId>
-			<version>0.2.3-SNAPSHOT</version>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
-			<groupId>edu.uci.ics.hyracks</groupId>
-			<artifactId>hyracks-dataflow-std</artifactId>
-			<version>0.2.3-SNAPSHOT</version>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
-			<groupId>edu.uci.ics.hyracks</groupId>
-			<artifactId>hyracks-dataflow-common</artifactId>
-			<version>0.2.3-SNAPSHOT</version>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
-			<groupId>edu.uci.ics.hyracks</groupId>
-			<artifactId>hyracks-control-cc</artifactId>
-			<version>0.2.3-SNAPSHOT</version>
-			<scope>test</scope>
-		</dependency>
-		<dependency>
-			<groupId>edu.uci.ics.hyracks</groupId>
-			<artifactId>hyracks-control-nc</artifactId>
-			<version>0.2.3-SNAPSHOT</version>
-			<scope>test</scope>
-		</dependency>
-
-		<dependency>
-			<groupId>org.apache.commons</groupId>
-			<artifactId>commons-io</artifactId>
-			<version>1.3.2</version>
-			<scope>test</scope>
-		</dependency>
-	</dependencies>
+  <modules>
+    <module>hyracks-hdfs-0.20.2</module>
+    <module>hyracks-hdfs-0.23.1</module>
+    <module>hyracks-hdfs-core</module>
+  </modules>
 </project>
diff --git a/pregelix/pregelix-api/pom.xml b/pregelix/pregelix-api/pom.xml
index cdb5adf..0643804 100644
--- a/pregelix/pregelix-api/pom.xml
+++ b/pregelix/pregelix-api/pom.xml
@@ -78,7 +78,7 @@
 		</dependency>
 		<dependency>
                         <groupId>edu.uci.ics.hyracks</groupId>
-                        <artifactId>hyracks-hdfs</artifactId>
+                        <artifactId>hyracks-hdfs-core</artifactId>
                         <version>0.2.3-SNAPSHOT</version>
                         <type>jar</type>
                         <scope>compile</scope>
diff --git a/pregelix/pregelix-dataflow-std/pom.xml b/pregelix/pregelix-dataflow-std/pom.xml
index fede9e0..534247a 100644
--- a/pregelix/pregelix-dataflow-std/pom.xml
+++ b/pregelix/pregelix-dataflow-std/pom.xml
@@ -106,7 +106,7 @@
 		</dependency>
 		<dependency>
                         <groupId>edu.uci.ics.hyracks</groupId>
-                        <artifactId>hyracks-hdfs</artifactId>
+                        <artifactId>hyracks-hdfs-core</artifactId>
                         <version>0.2.3-SNAPSHOT</version>
                         <type>jar</type>
                         <scope>compile</scope>