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Posted to commits@flink.apache.org by rm...@apache.org on 2015/02/02 19:42:04 UTC

[26/52] [partial] flink git commit: [FLINK-1452] Rename 'flink-addons' to 'flink-staging'

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-addons/flink-tachyon/src/test/java/org/apache/flink/tachyon/TachyonFileSystemWrapperTest.java
----------------------------------------------------------------------
diff --git a/flink-addons/flink-tachyon/src/test/java/org/apache/flink/tachyon/TachyonFileSystemWrapperTest.java b/flink-addons/flink-tachyon/src/test/java/org/apache/flink/tachyon/TachyonFileSystemWrapperTest.java
deleted file mode 100644
index e1235b6..0000000
--- a/flink-addons/flink-tachyon/src/test/java/org/apache/flink/tachyon/TachyonFileSystemWrapperTest.java
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.flink.tachyon;
-
-import org.apache.commons.io.IOUtils;
-import org.apache.flink.api.java.ExecutionEnvironment;
-import org.apache.flink.api.java.ExecutionEnvironmentFactory;
-import org.apache.flink.api.java.LocalEnvironment;
-import org.apache.flink.configuration.ConfigConstants;
-import org.apache.flink.configuration.GlobalConfiguration;
-import org.apache.flink.examples.java.wordcount.WordCount;
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.Path;
-import org.junit.After;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.Test;
-import tachyon.client.InStream;
-import tachyon.client.OutStream;
-import tachyon.client.ReadType;
-import tachyon.client.TachyonFS;
-import tachyon.client.TachyonFile;
-import tachyon.client.WriteType;
-import tachyon.master.LocalTachyonCluster;
-
-import java.io.File;
-import java.io.StringWriter;
-import java.net.URISyntaxException;
-import java.net.URL;
-
-public class TachyonFileSystemWrapperTest {
-	private static final long TACHYON_WORKER_CAPACITY = 1024 * 1024 * 32;
-	private static final String TACHYON_TEST_IN_FILE_NAME = "tachyontest";
-	private static final String TACHYON_TEST_OUT_FILE_NAME = "result";
-	private static final Path HADOOP_CONFIG_PATH;
-
-	static {
-		URL resource = TachyonFileSystemWrapperTest.class.getResource("/tachyonHadoopConf.xml");
-		File file = null;
-		try {
-			file = new File(resource.toURI());
-		} catch (URISyntaxException e) {
-			throw new RuntimeException("Unable to load req. res", e);
-		}
-		if(!file.exists()) {
-			throw new RuntimeException("Unable to load required resource");
-		}
-		HADOOP_CONFIG_PATH = new Path(file.getAbsolutePath());
-	}
-
-	private LocalTachyonCluster cluster;
-	private TachyonFS client;
-	private String input;
-	private String output;
-
-	@Before
-	public void startTachyon() {
-		try {
-			cluster = new LocalTachyonCluster(TACHYON_WORKER_CAPACITY);
-			cluster.start();
-			client = cluster.getClient();
-			int id = client.createFile("/" + TACHYON_TEST_IN_FILE_NAME, 1024 * 32);
-			Assert.assertNotEquals("Unable to create file", -1, id);
-
-			TachyonFile testFile = client.getFile(id);
-			Assert.assertNotNull(testFile);
-
-
-			OutStream outStream = testFile.getOutStream(WriteType.MUST_CACHE);
-			for(int i = 0; i < 10; i++) {
-				outStream.write("Hello Tachyon\n".getBytes());
-			}
-			outStream.close();
-			final String tachyonBase = "tachyon://" + cluster.getMasterHostname() + ":" + cluster.getMasterPort();
-			input = tachyonBase + "/" + TACHYON_TEST_IN_FILE_NAME;
-			output = tachyonBase + "/" + TACHYON_TEST_OUT_FILE_NAME;
-
-		} catch(Exception e) {
-			e.printStackTrace();
-			Assert.fail("Test preparation failed with exception: "+e.getMessage());
-		}
-	}
-
-	@After
-	public void stopTachyon() {
-		try {
-			cluster.stop();
-		} catch(Exception e) {
-			e.printStackTrace();
-			Assert.fail("Test teardown failed with exception: "+e.getMessage());
-		}
-	}
-	// Verify that Hadoop's FileSystem can load the TFS (Tachyon File System)
-	@Test
-	public void testHadoopLoadability() {
-		try {
-			Path tPath = new Path(input);
-			Configuration conf = new Configuration();
-			conf.addResource(HADOOP_CONFIG_PATH);
-			Assert.assertEquals("tachyon.hadoop.TFS", conf.get("fs.tachyon.impl", null));
-			tPath.getFileSystem(conf);
-		} catch(Exception e) {
-			e.printStackTrace();
-			Assert.fail("Test failed with exception: "+e.getMessage());
-		}
-	}
-
-
-	@Test
-	public void testTachyon() {
-		try {
-			org.apache.flink.configuration.Configuration addHDConfToFlinkConf = new org.apache.flink.configuration.Configuration();
-			addHDConfToFlinkConf.setString(ConfigConstants.HDFS_DEFAULT_CONFIG, HADOOP_CONFIG_PATH.toString());
-			GlobalConfiguration.includeConfiguration(addHDConfToFlinkConf);
-
-			new DopOneTestEnvironment(); // initialize DOP one
-
-			WordCount.main(new String[]{input, output});
-
-			// verify result
-			TachyonFile resultFile = client.getFile("/" + TACHYON_TEST_OUT_FILE_NAME);
-			Assert.assertNotNull("Result file has not been created", resultFile);
-			InStream inStream = resultFile.getInStream(ReadType.CACHE);
-			Assert.assertNotNull("Result file has not been created", inStream);
-			StringWriter writer = new StringWriter();
-			IOUtils.copy(inStream, writer);
-			String resultString = writer.toString();
-
-			Assert.assertEquals("hello 10\n" +
-					"tachyon 10\n", resultString);
-
-		} catch(Exception e) {
-			e.printStackTrace();
-			Assert.fail("Test failed with exception: "+e.getMessage());
-		}
-	}
-
-	// package visible
-	static final class DopOneTestEnvironment extends LocalEnvironment {
-	 	static {
-    		initializeContextEnvironment(new ExecutionEnvironmentFactory() {
-				@Override
-				public ExecutionEnvironment createExecutionEnvironment() {
-					LocalEnvironment le = new LocalEnvironment();
-					le.setDegreeOfParallelism(1);
-					return le;
-				}
-			});
-		}
-	}
-
-}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-addons/flink-tachyon/src/test/resources/log4j.properties
----------------------------------------------------------------------
diff --git a/flink-addons/flink-tachyon/src/test/resources/log4j.properties b/flink-addons/flink-tachyon/src/test/resources/log4j.properties
deleted file mode 100644
index 2c9a677..0000000
--- a/flink-addons/flink-tachyon/src/test/resources/log4j.properties
+++ /dev/null
@@ -1,23 +0,0 @@
-################################################################################
-#  Licensed to the Apache Software Foundation (ASF) under one
-#  or more contributor license agreements.  See the NOTICE file
-#  distributed with this work for additional information
-#  regarding copyright ownership.  The ASF licenses this file
-#  to you under the Apache License, Version 2.0 (the
-#  "License"); you may not use this file except in compliance
-#  with the License.  You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#  See the License for the specific language governing permissions and
-# limitations under the License.
-################################################################################
-
-# Tachyon's test-jar dependency adds a log4j.properties file to classpath.
-# Until the issue is resolved (see https://github.com/amplab/tachyon/pull/571)
-# we provide a log4j.properties file ourselves.
-
-log4j.rootLogger=OFF
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-addons/flink-tachyon/src/test/resources/tachyonHadoopConf.xml
----------------------------------------------------------------------
diff --git a/flink-addons/flink-tachyon/src/test/resources/tachyonHadoopConf.xml b/flink-addons/flink-tachyon/src/test/resources/tachyonHadoopConf.xml
deleted file mode 100644
index 0af8190..0000000
--- a/flink-addons/flink-tachyon/src/test/resources/tachyonHadoopConf.xml
+++ /dev/null
@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
--->
-<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
-
-
-<configuration>
-    <property>
-        <name>fs.tachyon.impl</name>
-        <value>tachyon.hadoop.TFS</value>
-    </property>
-</configuration>
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-addons/pom.xml
----------------------------------------------------------------------
diff --git a/flink-addons/pom.xml b/flink-addons/pom.xml
deleted file mode 100644
index ea45cdb..0000000
--- a/flink-addons/pom.xml
+++ /dev/null
@@ -1,64 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
-
-  http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
--->
-<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>
-
-	<parent>
-		<groupId>org.apache.flink</groupId>
-		<artifactId>flink-parent</artifactId>
-		<version>0.9-SNAPSHOT</version>
-		<relativePath>..</relativePath>
-	</parent>
-
-	<artifactId>flink-addons</artifactId>
-	<name>flink-addons</name>
-	<packaging>pom</packaging>
-
-	<modules>
-		<module>flink-avro</module>
-		<module>flink-jdbc</module>
-		<module>flink-spargel</module>
-		<module>flink-hadoop-compatibility</module>
-		<module>flink-streaming</module>
-		<module>flink-hbase</module>
-	</modules>
-	
-	<!-- See main pom.xml for explanation of profiles -->
-	<profiles>
-		<profile>
-			<id>hadoop-2</id>
-			<activation>
-				<property>
-					<!-- Please do not remove the 'hadoop2' comment. See ./tools/generate_specific_pom.sh -->
-					<!--hadoop2--><name>!hadoop.profile</name>
-				</property>
-			</activation>
-			<modules>
-				<!-- Include the Flink-tachyon project only for HD2.
-				 	The HDFS minicluster interfaces changed between the two versions.
-				 -->
-				<module>flink-tachyon</module>
-			</modules>
-		</profile>
-	</profiles>
-
-</project>

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/pom.xml
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/pom.xml b/flink-staging/flink-avro/pom.xml
new file mode 100644
index 0000000..15bb801
--- /dev/null
+++ b/flink-staging/flink-avro/pom.xml
@@ -0,0 +1,182 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+<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>
+	
+	<parent>
+		<groupId>org.apache.flink</groupId>
+		<artifactId>flink-staging</artifactId>
+		<version>0.9-SNAPSHOT</version>
+		<relativePath>..</relativePath>
+	</parent>
+
+	<artifactId>flink-avro</artifactId>
+	<name>flink-avro</name>
+
+	<packaging>jar</packaging>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.apache.flink</groupId>
+			<artifactId>flink-java</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		
+		<dependency>
+			<groupId>org.apache.flink</groupId>
+			<artifactId>flink-clients</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+		
+		<dependency>
+			<groupId>org.apache.avro</groupId>
+			<artifactId>avro</artifactId>
+			<!-- version is derived from base module -->
+		</dependency>
+		
+		<dependency>
+			<groupId>org.apache.flink</groupId>
+			<artifactId>flink-test-utils</artifactId>
+			<version>${project.version}</version>
+			<scope>test</scope>
+		</dependency>
+		
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<artifactId>maven-assembly-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>create-test-dependency</id>
+						<phase>process-test-classes</phase>
+						<goals>
+							<goal>single</goal>
+						</goals>
+						<configuration>
+							<archive>
+								<manifest>
+									<mainClass>org.apache.flink.api.avro.testjar.AvroExternalJarProgram</mainClass>
+								</manifest>
+							</archive>
+							<finalName>maven</finalName>
+							<attach>false</attach>
+							<descriptors>
+								<descriptor>src/test/assembly/test-assembly.xml</descriptor>
+							</descriptors>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+			<!--Remove the AvroExternalJarProgram code from the test-classes directory since it musn't be in the
+			classpath when running the tests to actually test whether the user code class loader
+			is properly used.-->
+			<plugin>
+				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version><!--$NO-MVN-MAN-VER$-->
+				<executions>
+					<execution>
+						<id>remove-avroexternalprogram</id>
+						<phase>process-test-classes</phase>
+						<goals>
+							<goal>clean</goal>
+						</goals>
+						<configuration>
+							<excludeDefaultDirectories>true</excludeDefaultDirectories>
+							<filesets>
+								<fileset>
+									<directory>${project.build.testOutputDirectory}</directory>
+									<includes>
+										<include>**/testjar/*.class</include>
+									</includes>
+								</fileset>
+							</filesets>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+
+		</plugins>
+		
+		<pluginManagement>
+			<plugins>
+				<!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->
+				<plugin>
+					<groupId>org.eclipse.m2e</groupId>
+					<artifactId>lifecycle-mapping</artifactId>
+					<version>1.0.0</version>
+					<configuration>
+						<lifecycleMappingMetadata>
+							<pluginExecutions>
+								<pluginExecution>
+									<pluginExecutionFilter>
+										<groupId>org.apache.maven.plugins</groupId>
+										<artifactId>maven-assembly-plugin</artifactId>
+										<versionRange>[2.4,)</versionRange>
+										<goals>
+											<goal>single</goal>
+										</goals>
+									</pluginExecutionFilter>
+									<action>
+										<ignore/>
+									</action>
+								</pluginExecution>
+								<pluginExecution>
+									<pluginExecutionFilter>
+										<groupId>org.apache.maven.plugins</groupId>
+										<artifactId>maven-clean-plugin</artifactId>
+										<versionRange>[1,)</versionRange>
+										<goals>
+											<goal>clean</goal>
+										</goals>
+									</pluginExecutionFilter>
+									<action>
+										<ignore/>
+									</action>
+								</pluginExecution>
+							</pluginExecutions>
+						</lifecycleMappingMetadata>
+					</configuration>
+				</plugin>
+			</plugins>
+		</pluginManagement>
+	</build>
+
+	<profiles>
+		<profile>
+			<!-- A bug with java6 is causing the javadoc generation
+			to fail because the test case contains junit?
+			See https://github.com/stratosphere/stratosphere/pull/405#issuecomment-32591978
+			for further links -->
+			<id>disable-javadocs-in-java6</id>
+			<activation>
+				 <jdk>(,1.6]</jdk> <!-- disable javadocs for java6 or lower. -->
+			</activation>
+			<properties>
+				<maven.javadoc.skip>true</maven.javadoc.skip>
+			</properties>
+		</profile>
+	</profiles>
+
+</project>

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/DataInputDecoder.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/DataInputDecoder.java b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/DataInputDecoder.java
new file mode 100644
index 0000000..59da4cb
--- /dev/null
+++ b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/DataInputDecoder.java
@@ -0,0 +1,213 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.api.avro;
+
+import java.io.DataInput;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import org.apache.avro.io.Decoder;
+import org.apache.avro.util.Utf8;
+
+
+public class DataInputDecoder extends Decoder {
+	
+	private final Utf8 stringDecoder = new Utf8();
+	
+	private DataInput in;
+	
+	public void setIn(DataInput in) {
+		this.in = in;
+	}
+
+	// --------------------------------------------------------------------------------------------
+	// primitives
+	// --------------------------------------------------------------------------------------------
+	
+	@Override
+	public void readNull() {}
+	
+
+	@Override
+	public boolean readBoolean() throws IOException {
+		return in.readBoolean();
+	}
+
+	@Override
+	public int readInt() throws IOException {
+		return in.readInt();
+	}
+
+	@Override
+	public long readLong() throws IOException {
+		return in.readLong();
+	}
+
+	@Override
+	public float readFloat() throws IOException {
+		return in.readFloat();
+	}
+
+	@Override
+	public double readDouble() throws IOException {
+		return in.readDouble();
+	}
+	
+	@Override
+	public int readEnum() throws IOException {
+		return readInt();
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	// bytes
+	// --------------------------------------------------------------------------------------------
+
+	@Override
+	public void readFixed(byte[] bytes, int start, int length) throws IOException {
+		in.readFully(bytes, start, length);
+	}
+	
+	@Override
+	public ByteBuffer readBytes(ByteBuffer old) throws IOException {
+		int length = readInt();
+		ByteBuffer result;
+		if (old != null && length <= old.capacity() && old.hasArray()) {
+			result = old;
+			result.clear();
+		} else {
+			result = ByteBuffer.allocate(length);
+		}
+		in.readFully(result.array(), result.arrayOffset() + result.position(), length);
+		result.limit(length);
+		return result;
+	}
+	
+	
+	@Override
+	public void skipFixed(int length) throws IOException {
+		skipBytes(length);
+	}
+	
+	@Override
+	public void skipBytes() throws IOException {
+		int num = readInt();
+		skipBytes(num);
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	// strings
+	// --------------------------------------------------------------------------------------------
+	
+	
+	@Override
+	public Utf8 readString(Utf8 old) throws IOException {
+		int length = readInt();
+		Utf8 result = (old != null ? old : new Utf8());
+		result.setByteLength(length);
+		
+		if (length > 0) {
+			in.readFully(result.getBytes(), 0, length);
+		}
+		
+		return result;
+	}
+
+	@Override
+	public String readString() throws IOException {
+		return readString(stringDecoder).toString();
+	}
+
+	@Override
+	public void skipString() throws IOException {
+		int len = readInt();
+		skipBytes(len);
+	}
+
+	// --------------------------------------------------------------------------------------------
+	// collection types
+	// --------------------------------------------------------------------------------------------
+
+	@Override
+	public long readArrayStart() throws IOException {
+		return readVarLongCount(in);
+	}
+
+	@Override
+	public long arrayNext() throws IOException {
+		return readVarLongCount(in);
+	}
+
+	@Override
+	public long skipArray() throws IOException {
+		return readVarLongCount(in);
+	}
+
+	@Override
+	public long readMapStart() throws IOException {
+		return readVarLongCount(in);
+	}
+
+	@Override
+	public long mapNext() throws IOException {
+		return readVarLongCount(in);
+	}
+
+	@Override
+	public long skipMap() throws IOException {
+		return readVarLongCount(in);
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	// union
+	// --------------------------------------------------------------------------------------------
+
+	@Override
+	public int readIndex() throws IOException {
+		return readInt();
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	// utils
+	// --------------------------------------------------------------------------------------------
+	
+	private void skipBytes(int num) throws IOException {
+		while (num > 0) {
+			num -= in.skipBytes(num);
+		}
+	}
+	
+	public static long readVarLongCount(DataInput in) throws IOException {
+		long value = in.readUnsignedByte();
+
+		if ((value & 0x80) == 0) {
+			return value;
+		}
+		else {
+			long curr;
+			int shift = 7;
+			value = value & 0x7f;
+			while (((curr = in.readUnsignedByte()) & 0x80) != 0){
+				value |= (curr & 0x7f) << shift;
+				shift += 7;
+			}
+			value |= curr << shift;
+			return value;
+		}
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/DataOutputEncoder.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/DataOutputEncoder.java b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/DataOutputEncoder.java
new file mode 100644
index 0000000..0102cc1
--- /dev/null
+++ b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/DataOutputEncoder.java
@@ -0,0 +1,183 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.api.avro;
+
+import java.io.DataOutput;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import org.apache.avro.io.Encoder;
+import org.apache.avro.util.Utf8;
+
+
+public final class DataOutputEncoder extends Encoder implements java.io.Serializable {
+	
+	private static final long serialVersionUID = 1L;
+	
+	private DataOutput out;
+	
+	
+	public void setOut(DataOutput out) {
+		this.out = out;
+	}
+
+
+	@Override
+	public void flush() throws IOException {}
+
+	// --------------------------------------------------------------------------------------------
+	// primitives
+	// --------------------------------------------------------------------------------------------
+	
+	@Override
+	public void writeNull() {}
+	
+
+	@Override
+	public void writeBoolean(boolean b) throws IOException {
+		out.writeBoolean(b);
+	}
+
+	@Override
+	public void writeInt(int n) throws IOException {
+		out.writeInt(n);
+	}
+
+	@Override
+	public void writeLong(long n) throws IOException {
+		out.writeLong(n);
+	}
+
+	@Override
+	public void writeFloat(float f) throws IOException {
+		out.writeFloat(f);
+	}
+
+	@Override
+	public void writeDouble(double d) throws IOException {
+		out.writeDouble(d);
+	}
+	
+	@Override
+	public void writeEnum(int e) throws IOException {
+		out.writeInt(e);
+	}
+	
+	
+	// --------------------------------------------------------------------------------------------
+	// bytes
+	// --------------------------------------------------------------------------------------------
+
+	@Override
+	public void writeFixed(byte[] bytes, int start, int len) throws IOException {
+		out.write(bytes, start, len);
+	}
+	
+	@Override
+	public void writeBytes(byte[] bytes, int start, int len) throws IOException {
+		out.writeInt(len);
+		if (len > 0) {
+			out.write(bytes, start, len);
+		}
+	}
+	
+	@Override
+	public void writeBytes(ByteBuffer bytes) throws IOException {
+		int num = bytes.remaining();
+		out.writeInt(num);
+		
+		if (num > 0) {
+			writeFixed(bytes);
+		}
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	// strings
+	// --------------------------------------------------------------------------------------------
+
+	@Override
+	public void writeString(String str) throws IOException {
+		byte[] bytes = Utf8.getBytesFor(str);
+		writeBytes(bytes, 0, bytes.length);
+	}
+	
+	@Override
+	public void writeString(Utf8 utf8) throws IOException {
+		writeBytes(utf8.getBytes(), 0, utf8.getByteLength());
+		
+	}
+
+	// --------------------------------------------------------------------------------------------
+	// collection types
+	// --------------------------------------------------------------------------------------------
+
+	@Override
+	public void writeArrayStart() {}
+
+	@Override
+	public void setItemCount(long itemCount) throws IOException {
+		if (itemCount > 0) {
+			writeVarLongCount(out, itemCount);
+		}
+	}
+
+	@Override
+	public void startItem() {}
+
+	@Override
+	public void writeArrayEnd() throws IOException {
+		// write a single byte 0, shortcut for a var-length long of 0
+		out.write(0);
+	}
+
+	@Override
+	public void writeMapStart() {}
+
+	@Override
+	public void writeMapEnd() throws IOException {
+		// write a single byte 0, shortcut for a var-length long of 0
+		out.write(0);
+	}
+
+	// --------------------------------------------------------------------------------------------
+	// union
+	// --------------------------------------------------------------------------------------------
+	
+	@Override
+	public void writeIndex(int unionIndex) throws IOException {
+		out.writeInt(unionIndex);
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	// utils
+	// --------------------------------------------------------------------------------------------
+		
+	
+	public static void writeVarLongCount(DataOutput out, long val) throws IOException {
+		if (val < 0) {
+			throw new IOException("Illegal count (must be non-negative): " + val);
+		}
+		
+		while ((val & ~0x7FL) != 0) {
+			out.write(((int) val) | 0x80);
+			val >>>= 7;
+		}
+		out.write((int) val);
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/FSDataInputStreamWrapper.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/FSDataInputStreamWrapper.java b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/FSDataInputStreamWrapper.java
new file mode 100644
index 0000000..655b6ff
--- /dev/null
+++ b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/avro/FSDataInputStreamWrapper.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+package org.apache.flink.api.avro;
+
+import java.io.Closeable;
+import java.io.IOException;
+
+import org.apache.avro.file.SeekableInput;
+import org.apache.flink.core.fs.FSDataInputStream;
+
+
+/**
+ * Code copy pasted from org.apache.avro.mapred.FSInput (which is Apache licensed as well)
+ * 
+ * The wrapper keeps track of the position in the data stream.
+ */
+public class FSDataInputStreamWrapper implements Closeable, SeekableInput {
+	private final FSDataInputStream stream;
+	private final long len;
+	private long pos;
+
+	public FSDataInputStreamWrapper(FSDataInputStream stream, long len) {
+		this.stream = stream;
+		this.len = len;
+		this.pos = 0;
+	}
+
+	public long length() {
+		return len;
+	}
+
+	public int read(byte[] b, int off, int len) throws IOException {
+		int read;
+		read = stream.read(b, off, len);
+		pos += read;
+		return read;
+	}
+
+	public void seek(long p) throws IOException {
+		stream.seek(p);
+		pos = p;
+	}
+
+	public long tell() throws IOException {
+		return pos;
+	}
+
+	public void close() throws IOException {
+		stream.close();
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/main/java/org/apache/flink/api/io/avro/example/AvroTypeExample.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/main/java/org/apache/flink/api/io/avro/example/AvroTypeExample.java b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/io/avro/example/AvroTypeExample.java
new file mode 100644
index 0000000..6affeec
--- /dev/null
+++ b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/io/avro/example/AvroTypeExample.java
@@ -0,0 +1,111 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.api.io.avro.example;
+
+import java.io.IOException;
+import java.util.Random;
+
+import org.apache.flink.api.common.functions.GroupReduceFunction;
+import org.apache.flink.api.common.functions.MapFunction;
+import org.apache.flink.api.common.io.GenericInputFormat;
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.api.java.tuple.Tuple2;
+import org.apache.flink.util.Collector;
+
+@SuppressWarnings("serial")
+public class AvroTypeExample {
+	
+	
+	public static void main(String[] args) throws Exception {
+		
+		ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
+		
+		DataSet<User> users = env.createInput(new UserGeneratingInputFormat());
+		
+		users
+			.map(new NumberExtractingMapper())
+			.groupBy(1)
+			.reduceGroup(new ConcatenatingReducer())
+			.print();
+		
+		env.execute();
+	}
+	
+	
+	
+	public static final class NumberExtractingMapper implements MapFunction<User, Tuple2<User, Integer>> {
+		
+		@Override
+		public Tuple2<User, Integer> map(User user) {
+			return new Tuple2<User, Integer>(user, user.getFavoriteNumber());
+		}
+	}
+	
+	
+	public static final class ConcatenatingReducer implements GroupReduceFunction<Tuple2<User, Integer>, Tuple2<Integer, String>> {
+
+		@Override
+		public void reduce(Iterable<Tuple2<User, Integer>> values, Collector<Tuple2<Integer, String>> out) throws Exception {
+			int number = 0;
+			StringBuilder colors = new StringBuilder();
+			
+			for (Tuple2<User, Integer> u : values) {
+				number = u.f1;
+				colors.append(u.f0.getFavoriteColor()).append(" - ");
+			}
+			
+			colors.setLength(colors.length() - 3);
+			out.collect(new Tuple2<Integer, String>(number, colors.toString()));
+		}
+	}
+	
+	
+	public static final class UserGeneratingInputFormat extends GenericInputFormat<User> {
+
+		private static final long serialVersionUID = 1L;
+		
+		private static final int NUM = 100;
+		
+		private final Random rnd = new Random(32498562304986L);
+		
+		private static final String[] NAMES = { "Peter", "Bob", "Liddy", "Alexander", "Stan" };
+		
+		private static final String[] COLORS = { "mauve", "crimson", "copper", "sky", "grass" };
+		
+		private int count;
+		
+
+		@Override
+		public boolean reachedEnd() throws IOException {
+			return count >= NUM;
+		}
+
+		@Override
+		public User nextRecord(User reuse) throws IOException {
+			count++;
+			
+			User u = new User();
+			u.setName(NAMES[rnd.nextInt(NAMES.length)]);
+			u.setFavoriteColor(COLORS[rnd.nextInt(COLORS.length)]);
+			u.setFavoriteNumber(rnd.nextInt(87));
+			return u;
+		}
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/main/java/org/apache/flink/api/io/avro/example/User.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/main/java/org/apache/flink/api/io/avro/example/User.java b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/io/avro/example/User.java
new file mode 100644
index 0000000..4608f96
--- /dev/null
+++ b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/io/avro/example/User.java
@@ -0,0 +1,269 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+/**
+ * Autogenerated by Avro
+ * 
+ * DO NOT EDIT DIRECTLY
+ */
+package org.apache.flink.api.io.avro.example;  
+@SuppressWarnings("all")
+@org.apache.avro.specific.AvroGenerated
+public class User extends org.apache.avro.specific.SpecificRecordBase implements org.apache.avro.specific.SpecificRecord {
+  public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"User\",\"namespace\":\"org.apache.flink.api.avro.example\",\"fields\":[{\"name\":\"name\",\"type\":\"string\"},{\"name\":\"favorite_number\",\"type\":[\"int\",\"null\"]},{\"name\":\"favorite_color\",\"type\":[\"string\",\"null\"]}]}");
+  public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
+  @Deprecated public java.lang.CharSequence name;
+  @Deprecated public java.lang.Integer favorite_number;
+  @Deprecated public java.lang.CharSequence favorite_color;
+
+  /**
+   * Default constructor.  Note that this does not initialize fields
+   * to their default values from the schema.  If that is desired then
+   * one should use {@link #newBuilder()}. 
+   */
+  public User() {}
+
+  /**
+   * All-args constructor.
+   */
+  public User(java.lang.CharSequence name, java.lang.Integer favorite_number, java.lang.CharSequence favorite_color) {
+    this.name = name;
+    this.favorite_number = favorite_number;
+    this.favorite_color = favorite_color;
+  }
+
+  public org.apache.avro.Schema getSchema() { return SCHEMA$; }
+  // Used by DatumWriter.  Applications should not call. 
+  public java.lang.Object get(int field$) {
+    switch (field$) {
+    case 0: return name;
+    case 1: return favorite_number;
+    case 2: return favorite_color;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+  // Used by DatumReader.  Applications should not call. 
+  @SuppressWarnings(value="unchecked")
+  public void put(int field$, java.lang.Object value$) {
+    switch (field$) {
+    case 0: name = (java.lang.CharSequence)value$; break;
+    case 1: favorite_number = (java.lang.Integer)value$; break;
+    case 2: favorite_color = (java.lang.CharSequence)value$; break;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  /**
+   * Gets the value of the 'name' field.
+   */
+  public java.lang.CharSequence getName() {
+    return name;
+  }
+
+  /**
+   * Sets the value of the 'name' field.
+   * @param value the value to set.
+   */
+  public void setName(java.lang.CharSequence value) {
+    this.name = value;
+  }
+
+  /**
+   * Gets the value of the 'favorite_number' field.
+   */
+  public java.lang.Integer getFavoriteNumber() {
+    return favorite_number;
+  }
+
+  /**
+   * Sets the value of the 'favorite_number' field.
+   * @param value the value to set.
+   */
+  public void setFavoriteNumber(java.lang.Integer value) {
+    this.favorite_number = value;
+  }
+
+  /**
+   * Gets the value of the 'favorite_color' field.
+   */
+  public java.lang.CharSequence getFavoriteColor() {
+    return favorite_color;
+  }
+
+  /**
+   * Sets the value of the 'favorite_color' field.
+   * @param value the value to set.
+   */
+  public void setFavoriteColor(java.lang.CharSequence value) {
+    this.favorite_color = value;
+  }
+
+  /** Creates a new User RecordBuilder */
+  public static org.apache.flink.api.io.avro.example.User.Builder newBuilder() {
+    return new org.apache.flink.api.io.avro.example.User.Builder();
+  }
+  
+  /** Creates a new User RecordBuilder by copying an existing Builder */
+  public static org.apache.flink.api.io.avro.example.User.Builder newBuilder(org.apache.flink.api.io.avro.example.User.Builder other) {
+    return new org.apache.flink.api.io.avro.example.User.Builder(other);
+  }
+  
+  /** Creates a new User RecordBuilder by copying an existing User instance */
+  public static org.apache.flink.api.io.avro.example.User.Builder newBuilder(org.apache.flink.api.io.avro.example.User other) {
+    return new org.apache.flink.api.io.avro.example.User.Builder(other);
+  }
+  
+  /**
+   * RecordBuilder for User instances.
+   */
+  public static class Builder extends org.apache.avro.specific.SpecificRecordBuilderBase<User>
+    implements org.apache.avro.data.RecordBuilder<User> {
+
+    private java.lang.CharSequence name;
+    private java.lang.Integer favorite_number;
+    private java.lang.CharSequence favorite_color;
+
+    /** Creates a new Builder */
+    private Builder() {
+      super(org.apache.flink.api.io.avro.example.User.SCHEMA$);
+    }
+    
+    /** Creates a Builder by copying an existing Builder */
+    private Builder(org.apache.flink.api.io.avro.example.User.Builder other) {
+      super(other);
+      if (isValidValue(fields()[0], other.name)) {
+        this.name = data().deepCopy(fields()[0].schema(), other.name);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.favorite_number)) {
+        this.favorite_number = data().deepCopy(fields()[1].schema(), other.favorite_number);
+        fieldSetFlags()[1] = true;
+      }
+      if (isValidValue(fields()[2], other.favorite_color)) {
+        this.favorite_color = data().deepCopy(fields()[2].schema(), other.favorite_color);
+        fieldSetFlags()[2] = true;
+      }
+    }
+    
+    /** Creates a Builder by copying an existing User instance */
+    private Builder(org.apache.flink.api.io.avro.example.User other) {
+            super(org.apache.flink.api.io.avro.example.User.SCHEMA$);
+      if (isValidValue(fields()[0], other.name)) {
+        this.name = data().deepCopy(fields()[0].schema(), other.name);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.favorite_number)) {
+        this.favorite_number = data().deepCopy(fields()[1].schema(), other.favorite_number);
+        fieldSetFlags()[1] = true;
+      }
+      if (isValidValue(fields()[2], other.favorite_color)) {
+        this.favorite_color = data().deepCopy(fields()[2].schema(), other.favorite_color);
+        fieldSetFlags()[2] = true;
+      }
+    }
+
+    /** Gets the value of the 'name' field */
+    public java.lang.CharSequence getName() {
+      return name;
+    }
+    
+    /** Sets the value of the 'name' field */
+    public org.apache.flink.api.io.avro.example.User.Builder setName(java.lang.CharSequence value) {
+      validate(fields()[0], value);
+      this.name = value;
+      fieldSetFlags()[0] = true;
+      return this; 
+    }
+    
+    /** Checks whether the 'name' field has been set */
+    public boolean hasName() {
+      return fieldSetFlags()[0];
+    }
+    
+    /** Clears the value of the 'name' field */
+    public org.apache.flink.api.io.avro.example.User.Builder clearName() {
+      name = null;
+      fieldSetFlags()[0] = false;
+      return this;
+    }
+
+    /** Gets the value of the 'favorite_number' field */
+    public java.lang.Integer getFavoriteNumber() {
+      return favorite_number;
+    }
+    
+    /** Sets the value of the 'favorite_number' field */
+    public org.apache.flink.api.io.avro.example.User.Builder setFavoriteNumber(java.lang.Integer value) {
+      validate(fields()[1], value);
+      this.favorite_number = value;
+      fieldSetFlags()[1] = true;
+      return this; 
+    }
+    
+    /** Checks whether the 'favorite_number' field has been set */
+    public boolean hasFavoriteNumber() {
+      return fieldSetFlags()[1];
+    }
+    
+    /** Clears the value of the 'favorite_number' field */
+    public org.apache.flink.api.io.avro.example.User.Builder clearFavoriteNumber() {
+      favorite_number = null;
+      fieldSetFlags()[1] = false;
+      return this;
+    }
+
+    /** Gets the value of the 'favorite_color' field */
+    public java.lang.CharSequence getFavoriteColor() {
+      return favorite_color;
+    }
+    
+    /** Sets the value of the 'favorite_color' field */
+    public org.apache.flink.api.io.avro.example.User.Builder setFavoriteColor(java.lang.CharSequence value) {
+      validate(fields()[2], value);
+      this.favorite_color = value;
+      fieldSetFlags()[2] = true;
+      return this; 
+    }
+    
+    /** Checks whether the 'favorite_color' field has been set */
+    public boolean hasFavoriteColor() {
+      return fieldSetFlags()[2];
+    }
+    
+    /** Clears the value of the 'favorite_color' field */
+    public org.apache.flink.api.io.avro.example.User.Builder clearFavoriteColor() {
+      favorite_color = null;
+      fieldSetFlags()[2] = false;
+      return this;
+    }
+
+    @Override
+    public User build() {
+      try {
+        User record = new User();
+        record.name = fieldSetFlags()[0] ? this.name : (java.lang.CharSequence) defaultValue(fields()[0]);
+        record.favorite_number = fieldSetFlags()[1] ? this.favorite_number : (java.lang.Integer) defaultValue(fields()[1]);
+        record.favorite_color = fieldSetFlags()[2] ? this.favorite_color : (java.lang.CharSequence) defaultValue(fields()[2]);
+        return record;
+      } catch (Exception e) {
+        throw new org.apache.avro.AvroRuntimeException(e);
+      }
+    }
+  }
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroInputFormat.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroInputFormat.java b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroInputFormat.java
new file mode 100644
index 0000000..fbb0f4c
--- /dev/null
+++ b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroInputFormat.java
@@ -0,0 +1,124 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+package org.apache.flink.api.java.io;
+
+import java.io.IOException;
+
+import org.apache.avro.file.DataFileReader;
+import org.apache.avro.file.FileReader;
+import org.apache.avro.file.SeekableInput;
+import org.apache.avro.io.DatumReader;
+import org.apache.avro.reflect.ReflectDatumReader;
+import org.apache.avro.specific.SpecificDatumReader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.apache.flink.api.avro.FSDataInputStreamWrapper;
+import org.apache.flink.api.common.io.FileInputFormat;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.java.typeutils.ResultTypeQueryable;
+import org.apache.flink.api.java.typeutils.TypeExtractor;
+import org.apache.flink.core.fs.FileInputSplit;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.util.InstantiationUtil;
+
+
+public class AvroInputFormat<E> extends FileInputFormat<E> implements ResultTypeQueryable<E> {
+	
+	private static final long serialVersionUID = 1L;
+
+	private static final Logger LOG = LoggerFactory.getLogger(AvroInputFormat.class);
+	
+	
+	private final Class<E> avroValueType;
+	
+	private boolean reuseAvroValue = true;
+	
+
+	private transient FileReader<E> dataFileReader;
+
+	
+	public AvroInputFormat(Path filePath, Class<E> type) {
+		super(filePath);
+		this.avroValueType = type;
+		this.unsplittable = true;
+	}
+	
+	
+	/**
+	 * Sets the flag whether to reuse the Avro value instance for all records.
+	 * By default, the input format reuses the Avro value.
+	 *
+	 * @param reuseAvroValue True, if the input format should reuse the Avro value instance, false otherwise.
+	 */
+	public void setReuseAvroValue(boolean reuseAvroValue) {
+		this.reuseAvroValue = reuseAvroValue;
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	// Typing
+	// --------------------------------------------------------------------------------------------
+	
+	@Override
+	public TypeInformation<E> getProducedType() {
+		return TypeExtractor.getForClass(this.avroValueType);
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	// Input Format Methods
+	// --------------------------------------------------------------------------------------------
+
+	@Override
+	public void open(FileInputSplit split) throws IOException {
+		super.open(split);
+
+		DatumReader<E> datumReader;
+		if (org.apache.avro.specific.SpecificRecordBase.class.isAssignableFrom(avroValueType)) {
+			datumReader = new SpecificDatumReader<E>(avroValueType);
+		} else {
+			datumReader = new ReflectDatumReader<E>(avroValueType);
+		}
+		
+		LOG.info("Opening split " + split);
+		
+		SeekableInput in = new FSDataInputStreamWrapper(stream, (int) split.getLength());
+		
+		dataFileReader = DataFileReader.openReader(in, datumReader);
+		dataFileReader.sync(split.getStart());
+	}
+
+	@Override
+	public boolean reachedEnd() throws IOException {
+		return !dataFileReader.hasNext();
+	}
+
+	@Override
+	public E nextRecord(E reuseValue) throws IOException {
+		if (!dataFileReader.hasNext()) {
+			return null;
+		}
+		
+		if (!reuseAvroValue) {
+			reuseValue = InstantiationUtil.instantiate(avroValueType, Object.class);
+		}
+		
+		reuseValue = dataFileReader.next(reuseValue);
+		return reuseValue;
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroOutputFormat.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroOutputFormat.java b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroOutputFormat.java
new file mode 100644
index 0000000..d00dbf7
--- /dev/null
+++ b/flink-staging/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroOutputFormat.java
@@ -0,0 +1,100 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+package org.apache.flink.api.java.io;
+
+
+import org.apache.avro.Schema;
+import org.apache.avro.file.DataFileWriter;
+import org.apache.avro.io.DatumWriter;
+import org.apache.avro.reflect.ReflectData;
+import org.apache.avro.reflect.ReflectDatumWriter;
+import org.apache.avro.specific.SpecificDatumWriter;
+import org.apache.flink.api.common.io.FileOutputFormat;
+import org.apache.flink.core.fs.Path;
+
+import java.io.IOException;
+
+public class AvroOutputFormat<E> extends FileOutputFormat<E> {
+
+	private static final long serialVersionUID = 1L;
+
+	private final Class<E> avroValueType;
+
+	private Schema userDefinedSchema = null;
+
+	private transient DataFileWriter<E> dataFileWriter;
+
+	public AvroOutputFormat(Path filePath, Class<E> type) {
+		super(filePath);
+		this.avroValueType = type;
+	}
+
+	public AvroOutputFormat(Class<E> type) {
+		this.avroValueType = type;
+	}
+
+	@Override
+	protected String getDirectoryFileName(int taskNumber) {
+		return super.getDirectoryFileName(taskNumber) + ".avro";
+	}
+
+	public void setSchema(Schema schema) {
+		this.userDefinedSchema = schema;
+	}
+
+	@Override
+	public void writeRecord(E record) throws IOException {
+		dataFileWriter.append(record);
+	}
+
+	@Override
+	public void open(int taskNumber, int numTasks) throws IOException {
+		super.open(taskNumber, numTasks);
+
+		DatumWriter<E> datumWriter;
+		Schema schema = null;
+		if (org.apache.avro.specific.SpecificRecordBase.class.isAssignableFrom(avroValueType)) {
+			datumWriter = new SpecificDatumWriter<E>(avroValueType);
+			try {
+				schema = ((org.apache.avro.specific.SpecificRecordBase)avroValueType.newInstance()).getSchema();
+			} catch (InstantiationException e) {
+				throw new RuntimeException(e.getMessage());
+			} catch (IllegalAccessException e) {
+				throw new RuntimeException(e.getMessage());
+			}
+		} else {
+			datumWriter = new ReflectDatumWriter<E>(avroValueType);
+			schema = ReflectData.get().getSchema(avroValueType);
+		}
+		dataFileWriter = new DataFileWriter<E>(datumWriter);
+		if (userDefinedSchema == null) {
+			dataFileWriter.create(schema, stream);
+		} else {
+			dataFileWriter.create(userDefinedSchema, stream);
+		}
+	}
+
+	@Override
+	public void close() throws IOException {
+		dataFileWriter.flush();
+		dataFileWriter.close();
+		super.close();
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/test/assembly/test-assembly.xml
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/test/assembly/test-assembly.xml b/flink-staging/flink-avro/src/test/assembly/test-assembly.xml
new file mode 100644
index 0000000..0f4561a
--- /dev/null
+++ b/flink-staging/flink-avro/src/test/assembly/test-assembly.xml
@@ -0,0 +1,36 @@
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+<assembly>
+	<id>test-jar</id>
+	<formats>
+		<format>jar</format>
+	</formats>
+	<includeBaseDirectory>false</includeBaseDirectory>
+	<fileSets>
+		<fileSet>
+			<directory>${project.build.testOutputDirectory}</directory>
+			<outputDirectory>/</outputDirectory>
+			<!--modify/add include to match your package(s) -->
+			<includes>
+				<include>org/apache/flink/api/avro/testjar/**</include>
+			</includes>
+		</fileSet>
+	</fileSets>
+</assembly>
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/AvroExternalJarProgramITCase.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/AvroExternalJarProgramITCase.java b/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/AvroExternalJarProgramITCase.java
new file mode 100644
index 0000000..0b394e3
--- /dev/null
+++ b/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/AvroExternalJarProgramITCase.java
@@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.api.avro;
+
+import java.io.File;
+import java.net.InetSocketAddress;
+
+import org.apache.flink.client.program.Client;
+import org.apache.flink.client.program.PackagedProgram;
+import org.apache.flink.configuration.ConfigConstants;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.test.util.ForkableFlinkMiniCluster;
+import org.junit.Assert;
+import org.junit.Test;
+
+
+public class AvroExternalJarProgramITCase {
+
+	private static final String JAR_FILE = "target/maven-test-jar.jar";
+	
+	private static final String TEST_DATA_FILE = "/testdata.avro";
+
+	@Test
+	public void testExternalProgram() {
+		
+		ForkableFlinkMiniCluster testMiniCluster = null;
+		
+		try {
+			Configuration config = new Configuration();
+			config.setInteger(ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS, 4);
+			testMiniCluster = new ForkableFlinkMiniCluster(config, false);
+			
+			String jarFile = JAR_FILE;
+			String testData = getClass().getResource(TEST_DATA_FILE).toString();
+			
+			PackagedProgram program = new PackagedProgram(new File(jarFile), new String[] { testData });
+						
+			Client c = new Client(new InetSocketAddress("localhost", testMiniCluster.getJobManagerRPCPort()),
+					new Configuration(), program.getUserCodeClassLoader());
+			c.run(program, 4, true);
+		}
+		catch (Throwable t) {
+			System.err.println(t.getMessage());
+			t.printStackTrace();
+			Assert.fail("Error during the packaged program execution: " + t.getMessage());
+		}
+		finally {
+			if (testMiniCluster != null) {
+				try {
+					testMiniCluster.stop();
+				} catch (Throwable t) {}
+			}
+		}
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/AvroOutputFormatTest.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/AvroOutputFormatTest.java b/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/AvroOutputFormatTest.java
new file mode 100644
index 0000000..a8bace3
--- /dev/null
+++ b/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/AvroOutputFormatTest.java
@@ -0,0 +1,173 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.api.avro;
+
+import org.junit.Assert;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.avro.file.DataFileReader;
+import org.apache.avro.io.DatumReader;
+import org.apache.avro.reflect.ReflectDatumReader;
+import org.apache.avro.specific.SpecificDatumReader;
+import org.apache.flink.api.io.avro.example.User;
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.api.common.functions.RichMapFunction;
+import org.apache.flink.api.java.io.AvroOutputFormat;
+import org.apache.flink.api.java.tuple.Tuple3;
+import org.apache.flink.test.util.JavaProgramTestBase;
+
+@SuppressWarnings("serial")
+public class AvroOutputFormatTest extends JavaProgramTestBase {
+
+	public static String outputPath1;
+
+	public static String outputPath2;
+
+	public static String inputPath;
+
+	public static String userData = "alice|1|blue\n" +
+		"bob|2|red\n" +
+		"john|3|yellow\n" +
+		"walt|4|black\n";
+
+	@Override
+	protected void preSubmit() throws Exception {
+		inputPath = createTempFile("user", userData);
+		outputPath1 = getTempDirPath("avro_output1");
+		outputPath2 = getTempDirPath("avro_output2");
+	}
+
+
+	@Override
+	protected void testProgram() throws Exception {
+		ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
+
+		DataSet<Tuple3<String, Integer, String>> input = env.readCsvFile(inputPath)
+			.fieldDelimiter("|")
+			.types(String.class, Integer.class, String.class);
+
+		//output the data with AvroOutputFormat for specific user type
+		DataSet<User> specificUser = input.map(new ConvertToUser());
+		specificUser.write(new AvroOutputFormat<User>(User.class), outputPath1);
+
+		//output the data with AvroOutputFormat for reflect user type
+		DataSet<ReflectiveUser> reflectiveUser = specificUser.map(new ConvertToReflective());
+		reflectiveUser.write(new AvroOutputFormat<ReflectiveUser>(ReflectiveUser.class), outputPath2);
+
+		env.execute();
+	}
+
+	@Override
+	protected void postSubmit() throws Exception {
+		//compare result for specific user type
+		File [] output1;
+		File file1 = asFile(outputPath1);
+		if (file1.isDirectory()) {
+			output1 = file1.listFiles();
+			// check for avro ext in dir.
+			for (File avroOutput : output1) {
+				Assert.assertTrue("Expect extension '.avro'", avroOutput.toString().endsWith(".avro"));
+			}
+		} else {
+			output1 = new File[] {file1};
+		}
+		List<String> result1 = new ArrayList<String>();
+		DatumReader<User> userDatumReader1 = new SpecificDatumReader<User>(User.class);
+		for (File avroOutput : output1) {
+
+			DataFileReader<User> dataFileReader1 = new DataFileReader<User>(avroOutput, userDatumReader1);
+			while (dataFileReader1.hasNext()) {
+				User user = dataFileReader1.next();
+				result1.add(user.getName() + "|" + user.getFavoriteNumber() + "|" + user.getFavoriteColor());
+			}
+		}
+		for (String expectedResult : userData.split("\n")) {
+			Assert.assertTrue("expected user " + expectedResult + " not found.", result1.contains(expectedResult));
+		}
+
+		//compare result for reflect user type
+		File [] output2;
+		File file2 = asFile(outputPath2);
+		if (file2.isDirectory()) {
+			output2 = file2.listFiles();
+		} else {
+			output2 = new File[] {file2};
+		}
+		List<String> result2 = new ArrayList<String>();
+		DatumReader<ReflectiveUser> userDatumReader2 = new ReflectDatumReader<ReflectiveUser>(ReflectiveUser.class);
+		for (File avroOutput : output2) {
+			DataFileReader<ReflectiveUser> dataFileReader2 = new DataFileReader<ReflectiveUser>(avroOutput, userDatumReader2);
+			while (dataFileReader2.hasNext()) {
+				ReflectiveUser user = dataFileReader2.next();
+				result2.add(user.getName() + "|" + user.getFavoriteNumber() + "|" + user.getFavoriteColor());
+			}
+		}
+		for (String expectedResult : userData.split("\n")) {
+			Assert.assertTrue("expected user " + expectedResult + " not found.", result2.contains(expectedResult));
+		}
+
+
+	}
+
+
+	public final static class ConvertToUser extends RichMapFunction<Tuple3<String, Integer, String>, User> {
+
+		@Override
+		public User map(Tuple3<String, Integer, String> value) throws Exception {
+			return new User(value.f0, value.f1, value.f2);
+		}
+	}
+
+	public final static class ConvertToReflective extends RichMapFunction<User, ReflectiveUser> {
+
+		@Override
+		public ReflectiveUser map(User value) throws Exception {
+			return new ReflectiveUser(value.getName().toString(), value.getFavoriteNumber(), value.getFavoriteColor().toString());
+		}
+	}
+
+	
+	public static class ReflectiveUser {
+		private String name;
+		private int favoriteNumber;
+		private String favoriteColor;
+
+		public ReflectiveUser() {}
+
+		public ReflectiveUser(String name, int favoriteNumber, String favoriteColor) {
+			this.name = name;
+			this.favoriteNumber = favoriteNumber;
+			this.favoriteColor = favoriteColor;
+		}
+		
+		public String getName() {
+			return this.name;
+		}
+		public String getFavoriteColor() {
+			return this.favoriteColor;
+		}
+		public int getFavoriteNumber() {
+			return this.favoriteNumber;
+		}
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/f94112fb/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/EncoderDecoderTest.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/EncoderDecoderTest.java b/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/EncoderDecoderTest.java
new file mode 100644
index 0000000..0724457
--- /dev/null
+++ b/flink-staging/flink-avro/src/test/java/org/apache/flink/api/avro/EncoderDecoderTest.java
@@ -0,0 +1,519 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.api.avro;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+
+import org.apache.avro.reflect.ReflectDatumReader;
+import org.apache.avro.reflect.ReflectDatumWriter;
+import org.apache.flink.api.io.avro.generated.Colors;
+import org.apache.flink.api.io.avro.generated.User;
+import org.apache.flink.util.StringUtils;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Tests the {@link DataOutputEncoder} and {@link DataInputDecoder} classes for Avro serialization.
+ */
+public class EncoderDecoderTest {
+	@Test
+	public void testComplexStringsDirecty() {
+		try {
+			Random rnd = new Random(349712539451944123L);
+			
+			for (int i = 0; i < 10; i++) {
+				String testString = StringUtils.getRandomString(rnd, 10, 100);
+				
+				ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
+				{
+					DataOutputStream dataOut = new DataOutputStream(baos);
+					DataOutputEncoder encoder = new DataOutputEncoder();
+					encoder.setOut(dataOut);
+					
+					encoder.writeString(testString);
+					dataOut.flush();
+					dataOut.close();
+				}
+				
+				byte[] data = baos.toByteArray();
+				
+				// deserialize
+				{
+					ByteArrayInputStream bais = new ByteArrayInputStream(data);
+					DataInputStream dataIn = new DataInputStream(bais);
+					DataInputDecoder decoder = new DataInputDecoder();
+					decoder.setIn(dataIn);
+	
+					String deserialized = decoder.readString();
+					
+					assertEquals(testString, deserialized);
+				}
+			}
+		}
+		catch (Exception e) {
+			System.err.println(e.getMessage());
+			e.printStackTrace();
+			fail("Test failed due to an exception: " + e.getMessage());
+		}
+	}
+	
+	@Test
+	public void testPrimitiveTypes() {
+		
+		testObjectSerialization(new Boolean(true));
+		testObjectSerialization(new Boolean(false));
+		
+		testObjectSerialization(Byte.valueOf((byte) 0));
+		testObjectSerialization(Byte.valueOf((byte) 1));
+		testObjectSerialization(Byte.valueOf((byte) -1));
+		testObjectSerialization(Byte.valueOf(Byte.MIN_VALUE));
+		testObjectSerialization(Byte.valueOf(Byte.MAX_VALUE));
+		
+		testObjectSerialization(Short.valueOf((short) 0));
+		testObjectSerialization(Short.valueOf((short) 1));
+		testObjectSerialization(Short.valueOf((short) -1));
+		testObjectSerialization(Short.valueOf(Short.MIN_VALUE));
+		testObjectSerialization(Short.valueOf(Short.MAX_VALUE));
+		
+		testObjectSerialization(Integer.valueOf(0));
+		testObjectSerialization(Integer.valueOf(1));
+		testObjectSerialization(Integer.valueOf(-1));
+		testObjectSerialization(Integer.valueOf(Integer.MIN_VALUE));
+		testObjectSerialization(Integer.valueOf(Integer.MAX_VALUE));
+		
+		testObjectSerialization(Long.valueOf(0));
+		testObjectSerialization(Long.valueOf(1));
+		testObjectSerialization(Long.valueOf(-1));
+		testObjectSerialization(Long.valueOf(Long.MIN_VALUE));
+		testObjectSerialization(Long.valueOf(Long.MAX_VALUE));
+		
+		testObjectSerialization(Float.valueOf(0));
+		testObjectSerialization(Float.valueOf(1));
+		testObjectSerialization(Float.valueOf(-1));
+		testObjectSerialization(Float.valueOf((float)Math.E));
+		testObjectSerialization(Float.valueOf((float)Math.PI));
+		testObjectSerialization(Float.valueOf(Float.MIN_VALUE));
+		testObjectSerialization(Float.valueOf(Float.MAX_VALUE));
+		testObjectSerialization(Float.valueOf(Float.MIN_NORMAL));
+		testObjectSerialization(Float.valueOf(Float.NaN));
+		testObjectSerialization(Float.valueOf(Float.NEGATIVE_INFINITY));
+		testObjectSerialization(Float.valueOf(Float.POSITIVE_INFINITY));
+		
+		testObjectSerialization(Double.valueOf(0));
+		testObjectSerialization(Double.valueOf(1));
+		testObjectSerialization(Double.valueOf(-1));
+		testObjectSerialization(Double.valueOf(Math.E));
+		testObjectSerialization(Double.valueOf(Math.PI));
+		testObjectSerialization(Double.valueOf(Double.MIN_VALUE));
+		testObjectSerialization(Double.valueOf(Double.MAX_VALUE));
+		testObjectSerialization(Double.valueOf(Double.MIN_NORMAL));
+		testObjectSerialization(Double.valueOf(Double.NaN));
+		testObjectSerialization(Double.valueOf(Double.NEGATIVE_INFINITY));
+		testObjectSerialization(Double.valueOf(Double.POSITIVE_INFINITY));
+		
+		testObjectSerialization("");
+		testObjectSerialization("abcdefg");
+		testObjectSerialization("ab\u1535\u0155xyz\u706F");
+		
+		testObjectSerialization(new SimpleTypes(3637, 54876486548L, (byte) 65, "We're out looking for astronauts", (short) 0x2387, 2.65767523));
+		testObjectSerialization(new SimpleTypes(705608724, -1L, (byte) -65, "Serve me the sky with a big slice of lemon", (short) Byte.MIN_VALUE, 0.0000001));
+	}
+	
+	@Test
+	public void testArrayTypes() {
+		{
+			int[] array = new int[] {1, 2, 3, 4, 5};
+			testObjectSerialization(array);
+		}
+		{
+			long[] array = new long[] {1, 2, 3, 4, 5};
+			testObjectSerialization(array);
+		}
+		{
+			float[] array = new float[] {1, 2, 3, 4, 5};
+			testObjectSerialization(array);
+		}
+		{
+			double[] array = new double[] {1, 2, 3, 4, 5};
+			testObjectSerialization(array);
+		}
+		{
+			String[] array = new String[] {"Oh", "my", "what", "do", "we", "have", "here", "?"};
+			testObjectSerialization(array);
+		}
+	}
+	
+	@Test
+	public void testEmptyArray() {
+		{
+			int[] array = new int[0];
+			testObjectSerialization(array);
+		}
+		{
+			long[] array = new long[0];
+			testObjectSerialization(array);
+		}
+		{
+			float[] array = new float[0];
+			testObjectSerialization(array);
+		}
+		{
+			double[] array = new double[0];
+			testObjectSerialization(array);
+		}
+		{
+			String[] array = new String[0];
+			testObjectSerialization(array);
+		}
+	}
+	
+	@Test
+	public void testObjects() {
+		// simple object containing only primitives
+		{
+			testObjectSerialization(new Book(976243875L, "The Serialization Odysse", 42));
+		}
+		
+		// object with collection
+		{
+			ArrayList<String> list = new ArrayList<String>();
+			list.add("A");
+			list.add("B");
+			list.add("C");
+			list.add("D");
+			list.add("E");
+			
+			testObjectSerialization(new BookAuthor(976243875L, list, "Arno Nym"));
+		}
+		
+		// object with empty collection
+		{
+			ArrayList<String> list = new ArrayList<String>();
+			testObjectSerialization(new BookAuthor(987654321L, list, "The Saurus"));
+		}
+	}
+	
+	@Test
+	public void testNestedObjectsWithCollections() {
+		testObjectSerialization(new ComplexNestedObject2(true));
+	}
+	
+	@Test
+	public void testGeneratedObjectWithNullableFields() {
+		List<CharSequence> strings = Arrays.asList(new CharSequence[] { "These", "strings", "should", "be", "recognizable", "as", "a", "meaningful", "sequence" });
+		List<Boolean> bools = Arrays.asList(true, true, false, false, true, false, true, true);
+		Map<CharSequence, Long> map = new HashMap<CharSequence, Long>();
+		map.put("1", 1L);
+		map.put("2", 2L);
+		map.put("3", 3L);
+		
+		User user = new User("Freudenreich", 1337, "macintosh gray", 1234567890L, 3.1415926, null, true, strings, bools, null, Colors.GREEN, map);
+		
+		testObjectSerialization(user);
+	}
+	
+	@Test
+	public void testVarLenCountEncoding() {
+		try {
+			long[] values = new long[] { 0, 1, 2, 3, 4, 0, 574, 45236, 0, 234623462, 23462462346L, 0, 9734028767869761L, 0x7fffffffffffffffL};
+			
+			// write
+			ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
+			{
+				DataOutputStream dataOut = new DataOutputStream(baos);
+				
+				for (long val : values) {
+					DataOutputEncoder.writeVarLongCount(dataOut, val);
+				}
+				
+				dataOut.flush();
+				dataOut.close();
+			}
+			
+			// read
+			{
+				ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
+				DataInputStream dataIn = new DataInputStream(bais);
+				
+				for (long val : values) {
+					long read = DataInputDecoder.readVarLongCount(dataIn);
+					assertEquals("Wrong var-len encoded value read.", val, read);
+				}
+			}
+		}
+		catch (Exception e) {
+			System.err.println(e.getMessage());
+			e.printStackTrace();
+			fail("Test failed due to an exception: " + e.getMessage());
+		}
+	}
+	
+	private static <X> void testObjectSerialization(X obj) {
+		
+		try {
+			
+			// serialize
+			ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
+			{
+				DataOutputStream dataOut = new DataOutputStream(baos);
+				DataOutputEncoder encoder = new DataOutputEncoder();
+				encoder.setOut(dataOut);
+				
+				@SuppressWarnings("unchecked")
+				Class<X> clazz = (Class<X>) obj.getClass();
+				ReflectDatumWriter<X> writer = new ReflectDatumWriter<X>(clazz);
+				
+				writer.write(obj, encoder);
+				dataOut.flush();
+				dataOut.close();
+			}
+			
+			byte[] data = baos.toByteArray();
+			X result = null;
+			
+			// deserialize
+			{
+				ByteArrayInputStream bais = new ByteArrayInputStream(data);
+				DataInputStream dataIn = new DataInputStream(bais);
+				DataInputDecoder decoder = new DataInputDecoder();
+				decoder.setIn(dataIn);
+
+				@SuppressWarnings("unchecked")
+				Class<X> clazz = (Class<X>) obj.getClass();
+				ReflectDatumReader<X> reader = new ReflectDatumReader<X>(clazz);
+				
+				// create a reuse object if possible, otherwise we have no reuse object 
+				X reuse = null;
+				try {
+					@SuppressWarnings("unchecked")
+					X test = (X) obj.getClass().newInstance();
+					reuse = test;
+				} catch (Throwable t) {}
+				
+				result = reader.read(reuse, decoder);
+			}
+			
+			// check
+			final String message = "Deserialized object is not the same as the original";
+			
+			if (obj.getClass().isArray()) {
+				Class<?> clazz = obj.getClass();
+				if (clazz == byte[].class) {
+					assertArrayEquals(message, (byte[]) obj, (byte[]) result);
+				}
+				else if (clazz == short[].class) {
+					assertArrayEquals(message, (short[]) obj, (short[]) result);
+				}
+				else if (clazz == int[].class) {
+					assertArrayEquals(message, (int[]) obj, (int[]) result);
+				}
+				else if (clazz == long[].class) {
+					assertArrayEquals(message, (long[]) obj, (long[]) result);
+				}
+				else if (clazz == char[].class) {
+					assertArrayEquals(message, (char[]) obj, (char[]) result);
+				}
+				else if (clazz == float[].class) {
+					assertArrayEquals(message, (float[]) obj, (float[]) result, 0.0f);
+				}
+				else if (clazz == double[].class) {
+					assertArrayEquals(message, (double[]) obj, (double[]) result, 0.0);
+				} else {
+					assertArrayEquals(message, (Object[]) obj, (Object[]) result);
+				}
+			} else {
+				assertEquals(message, obj, result);
+			}
+		}
+		catch (Exception e) {
+			System.err.println(e.getMessage());
+			e.printStackTrace();
+			fail("Test failed due to an exception: " + e.getMessage());
+		}
+	}
+	
+	// --------------------------------------------------------------------------------------------
+	//  Test Objects
+	// --------------------------------------------------------------------------------------------
+
+
+	public static final class SimpleTypes {
+		
+		private final int iVal;
+		private final long lVal;
+		private final byte bVal;
+		private final String sVal;
+		private final short rVal;
+		private final double dVal;
+		
+		
+		public SimpleTypes() {
+			this(0, 0, (byte) 0, "", (short) 0, 0);
+		}
+		
+		public SimpleTypes(int iVal, long lVal, byte bVal, String sVal, short rVal, double dVal) {
+			this.iVal = iVal;
+			this.lVal = lVal;
+			this.bVal = bVal;
+			this.sVal = sVal;
+			this.rVal = rVal;
+			this.dVal = dVal;
+		}
+		
+		@Override
+		public boolean equals(Object obj) {
+			if (obj.getClass() == SimpleTypes.class) {
+				SimpleTypes other = (SimpleTypes) obj;
+				
+				return other.iVal == this.iVal &&
+						other.lVal == this.lVal &&
+						other.bVal == this.bVal &&
+						other.sVal.equals(this.sVal) &&
+						other.rVal == this.rVal &&
+						other.dVal == this.dVal;
+				
+			} else {
+				return false;
+			}
+		}
+	}
+	
+	public static class ComplexNestedObject1 {
+		
+		private double doubleValue;
+		
+		private List<String> stringList;
+		
+		public ComplexNestedObject1() {}
+		
+		public ComplexNestedObject1(int offInit) {
+			this.doubleValue = 6293485.6723 + offInit;
+				
+			this.stringList = new ArrayList<String>();
+			this.stringList.add("A" + offInit);
+			this.stringList.add("somewhat" + offInit);
+			this.stringList.add("random" + offInit);
+			this.stringList.add("collection" + offInit);
+			this.stringList.add("of" + offInit);
+			this.stringList.add("strings" + offInit);
+		}
+		
+		@Override
+		public boolean equals(Object obj) {
+			if (obj.getClass() == ComplexNestedObject1.class) {
+				ComplexNestedObject1 other = (ComplexNestedObject1) obj;
+				return other.doubleValue == this.doubleValue && this.stringList.equals(other.stringList);
+			} else {
+				return false;
+			}
+		}
+	}
+	
+	public static class ComplexNestedObject2 {
+		
+		private long longValue;
+		
+		private Map<String, ComplexNestedObject1> theMap;
+		
+		public ComplexNestedObject2() {}
+		
+		public ComplexNestedObject2(boolean init) {
+			this.longValue = 46547;
+				
+			this.theMap = new HashMap<String, ComplexNestedObject1>();
+			this.theMap.put("36354L", new ComplexNestedObject1(43546543));
+			this.theMap.put("785611L", new ComplexNestedObject1(45784568));
+			this.theMap.put("43L", new ComplexNestedObject1(9876543));
+			this.theMap.put("-45687L", new ComplexNestedObject1(7897615));
+			this.theMap.put("1919876876896L", new ComplexNestedObject1(27154));
+			this.theMap.put("-868468468L", new ComplexNestedObject1(546435));
+		}
+		
+		@Override
+		public boolean equals(Object obj) {
+			if (obj.getClass() == ComplexNestedObject2.class) {
+				ComplexNestedObject2 other = (ComplexNestedObject2) obj;
+				return other.longValue == this.longValue && this.theMap.equals(other.theMap);
+			} else {
+				return false;
+			}
+		}
+	}
+	
+	public static class Book {
+
+		private long bookId;
+		private String title;
+		private long authorId;
+
+		public Book() {}
+
+		public Book(long bookId, String title, long authorId) {
+			this.bookId = bookId;
+			this.title = title;
+			this.authorId = authorId;
+		}
+		
+		@Override
+		public boolean equals(Object obj) {
+			if (obj.getClass() == Book.class) {
+				Book other = (Book) obj;
+				return other.bookId == this.bookId && other.authorId == this.authorId && this.title.equals(other.title);
+			} else {
+				return false;
+			}
+		}
+	}
+
+	public static class BookAuthor {
+
+		private long authorId;
+		private List<String> bookTitles;
+		private String authorName;
+
+		public BookAuthor() {}
+
+		public BookAuthor(long authorId, List<String> bookTitles, String authorName) {
+			this.authorId = authorId;
+			this.bookTitles = bookTitles;
+			this.authorName = authorName;
+		}
+		
+		@Override
+		public boolean equals(Object obj) {
+			if (obj.getClass() == BookAuthor.class) {
+				BookAuthor other = (BookAuthor) obj;
+				return other.authorName.equals(this.authorName) && other.authorId == this.authorId &&
+						other.bookTitles.equals(this.bookTitles);
+			} else {
+				return false;
+			}
+		}
+	}
+}