Develop Reference

Incompatible class versions when submitting Flink a job

I'm trying to submit a streaming job using Beam 2.27/Flink 1.12, using the following Maven command-line:
mvn exec:java -Dexec.mainClass=org.example.MyPipelineClass -Pflink-runner -Dexec.args="--runner=FlinkRunner --flinkMaster=flink-host:8081 --filesToStage=target/pipelines-bundled-1.0.0.jar"
Things were working smoothly for a bit, but I recently made some edits and wanted to run a new version of the pipeline and am now getting the following error:
Caused by: java.io.InvalidClassException: org.apache.flink.streaming.api.graph.StreamConfig$NetworkInputConfig; local class incompatible: stream classdesc serialVersionUID = -3137689219135046939, local class serialVersionUID = 3698633776553163849
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:699)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2003)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1850)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2160)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:2093)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1655)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:503)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:461)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:615)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:600)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:587)
at org.apache.flink.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:541)
at org.apache.flink.streaming.api.graph.StreamConfig.getInputs(StreamConfig.java:263)
... 21 more
My pom.xml looks something like this:
<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>pipelines</artifactId>
<version>1.0.0</version>
<packaging>jar</packaging>
<properties>
<beam.version>2.27.0</beam.version>
<flink.version>1.12</flink.version>
<maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
<maven-exec-plugin.version>1.6.0</maven-exec-plugin.version>
<maven-jar-plugin.version>3.2.0</maven-jar-plugin.version>
<maven-shade-plugin.version>3.1.0</maven-shade-plugin.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven-jar-plugin.version}</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>${maven-shade-plugin.version}</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<finalName>${project.artifactId}-bundled-${project.version}</finalName>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/LICENSE</exclude>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>${maven-exec-plugin.version}</version>
<configuration>
<cleanupDaemonThreads>false</cleanupDaemonThreads>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
<profiles>
<profile>
<id>flink-runner</id>
<dependencies>
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-runners-flink-${flink.version}</artifactId>
<version>${beam.version}</version>
<scope>runtime</scope>
</dependency>
</dependencies>
</profile>
</profiles>
<dependencies>
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-core</artifactId>
<version>${beam.version}</version>
</dependency>
<!-- note that the pipeline runs on GCP -->
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-io-google-cloud-platform</artifactId>
<version>${beam.version}</version>
<exclusions>
<exclusion>
<groupId>com.google.cloud.bigtable</groupId>
<artifactId>bigtable-client-core</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- main output is JDBC/Postgres -->
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-io-jdbc</artifactId>
<version>${beam.version}</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.2.4</version>
</dependency>
</dependencies>
</project>
Of course, before submitting the job I built the JAR using mvn clean package -Pflink-runner.
Flink is self-hosted on a GKE instance, and is deployed using the flink:1.12.4-java8 image.
I found this issue which seems to have the same error message, but no clear offender.
Any help or ideas to explore would be greatly appreciated, I have no idea what to investigate.

I found the issue own my own. In the pom.xml above, I specified that the Beam runner was beam-runners-flink-1.12, and the cluster was running Flink 1.12.4
Beam's Flink runner does not specify a patch, and uses Flink 1.12.0
Downgrading the cluster fixed my issue.

Setting up JVM debugging in Maven project

I'm trying to debug my application that's running on a remote JVM, but I can't manage to get my dependencies there too.
Here are a few things I tried:
Remote debugger:
I've set up a remote debugger, and it corrects correctly to the JVM but when I then use my application I get a bunch of NoClassDefFoundError errors coming from external libraries that are in my maven dependencies (which makes sense because I building the app with the Intellij building tools and not Maven itself. I have some relocation rules set up so maybe that's the issue?
The JVM itself is running on my local machine.
Maven debugger
There is a maven debugger integrated inside Intellij but it seems like that is just using the remote JVM during the jar packaging but nothing else. Maybe I'm going something wrong there?
I also have a few yaml files in my resources folder that should be correctly included in the debugger.
Here is my project structure:
Here is my POM file for reference:
<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>me.playbosswar.com</groupId>
<artifactId>commandtimer</artifactId>
<name>CommandTimer</name>
<version>6.0</version>
<description>Plugin</description>
<build>
<finalName>${project.name}_v${project.version}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.3.1</version>
<configuration>
<outputDirectory>/Users/tristan/Documents/minecraft/servers/1.16.5/plugins</outputDirectory>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<configuration>
<relocations>
<relocation>
<pattern>com.cryptomorin.xseries</pattern>
<shadedPattern>me.playbosswar.com</shadedPattern>
</relocation>
</relocations>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
<repositories>
<repository>
<id>papermc</id>
<url>https://papermc.io/repo/repository/maven-public/</url>
</repository>
<repository>
<id>placeholderapi</id>
<url>http://repo.extendedclip.com/content/repositories/placeholderapi/</url>
</repository>
<repository>
<id>codemc-snapshots</id>
<url>https://repo.codemc.io/repository/maven-snapshots/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>com.destroystokyo.paper</groupId>
<artifactId>paper-api</artifactId>
<version>1.16.5-R0.1-SNAPSHOT</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>me.clip</groupId>
<artifactId>placeholderapi</artifactId>
<version>2.10.9</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.6</version>
</dependency>
<dependency>
<groupId>com.github.cryptomorin</groupId>
<artifactId>XSeries</artifactId>
<version>7.2.1.2</version>
</dependency>
<dependency>
<groupId>fr.minuskube.inv</groupId>
<artifactId>smart-invs</artifactId>
<version>1.2.7</version>
</dependency>
<dependency>
<groupId>net.wesjd</groupId>
<artifactId>anvilgui</artifactId>
<version>1.5.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.8.1</version>
</dependency>
</dependencies>
</project>
Here is the actual error:

Spark fails with NoClassDefFoundError for org.apache.kafka.common.serialization.StringDeserializer

I am developing a generic Spark application that listens to a Kafka stream using Spark and Java.
I am using kafka_2.11-0.10.2.2, spark-2.3.2-bin-hadoop2.7 - I also tried several other kafka/spark combinations before posting this question.
The code fails at loading StringDeserializer class:
SparkConf sparkConf = new SparkConf().setAppName("JavaDirectKafkaWordCount");
JavaStreamingContext jssc = new JavaStreamingContext(sparkConf, Durations.seconds(2));
Set<String> topicsSet = new HashSet<>();
topicsSet.add(topics);
Map<String, Object> kafkaParams = new HashMap<>();
kafkaParams.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, brokers);
kafkaParams.put(ConsumerConfig.GROUP_ID_CONFIG, groupId);
kafkaParams.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
kafkaParams.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
The error I get is:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/kafka/common/serialization/StringDeserializer
From Why does Spark application fail with "Exception in thread "main" java.lang.NoClassDefFoundError: ...StringDeserializer"? it seems that this could be a scala version mismatch issue, but my pom.xml doesn't have that issue:
<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>yyy.iot.ckc</groupId>
<artifactId>sparkpoc</artifactId>
<version>1.0-SNAPSHOT</version>
<name>sparkpoc</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<java.version>1.8</java.version>
<spark.scala.version>2.11</spark.scala.version>
<spark.version>2.3.2</spark.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_${spark.scala.version}</artifactId>
<version>${spark.version}</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-streaming_${spark.scala.version}</artifactId>
<version>${spark.version}</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-streaming-kafka-0-10_${spark.scala.version}</artifactId>
<version>${spark.version}</version>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>3.0.0</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
The submission script I use is:
./bin/spark-submit \
--class "yyy.iot.ckc.KafkaDataModeler" \
--master local[2] \
../sparkpoc/target/sparkpoc-1.0-SNAPSHOT.jar
Can anyone please point me in the right direction as to where I am going wrong?

Spark runs the program as by running an instance of a JVM. So if the libraries (JARs) are not in the classpath of that JVM we run into this runtime exception. The solution is to package all the dependent JARs along with main JAR. The following build script will work for that.
Also, as mentioned in https://stackoverflow.com/a/54583941/1224075 the scope of the spark-core and spark-streaming libraries need to be declared as provided. This is because some of the libraries are implicitly provided by the Spark JVM.
The build section of the POM which worked for me -
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2.1</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>

You need to use the Maven Shade Plugin to package the Kafka clients along with your Spark application, then you can submit the shaded Jar, and the Kafka serializers should be found on the classpath.
Also, make sure you set the provided Spark packages
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_${spark.scala.version}</artifactId>
<version>${spark.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-streaming_${spark.scala.version}</artifactId>
<version>${spark.version}</version>
<scope>provided</scope>
</dependency>

Apache ServiceMix installing bundle OSGI

I got this message when i was trying to install bundle to apache ServiceMix:
Error executing command: Error installing bundles:
Unable to start bundle mvn:org.apache.karaf.shell/shell-sample/1.0-SNAPSHOT: Unresolved cons
traint in bundle shell-sample [235]: Unable to resolve 235.0: missing requirement [235.0] osgi.ee; (
&(osgi.ee=JavaSE)(version=1.8))
This is my command:
osgi:install -s mvn:org.apache.karaf.shell/shell-sample/1.0-SNAPSHOT
I don't understand this, google can't give me answer
This is my pom.xml
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.apache.karaf.shell</groupId>
<artifactId>shell-sample</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>bundle</packaging>
<name>shell-sample</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.servicemix.specs</groupId>
<artifactId>org.apache.servicemix.specs.jsr311-api-1.1.1</artifactId>
<version>2.4.0</version>
</dependency>
<dependency>
<groupId>org.apache.servicemix.specs</groupId>
<artifactId>org.apache.servicemix.specs.jaxb-api-2.2</artifactId>
<version>2.4.0</version>
</dependency>
<dependency>
<groupId>org.apache.servicemix.bundles</groupId>
<artifactId>org.apache.servicemix.bundles.commons-httpclient</artifactId>
<version>3.1_7</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<target>1.8</target>
<source>1.8</source>
</configuration>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<configuration>
<instructions>
<Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
<Bundle-Description>${project.description}</Bundle-Description>
<Import-Package>
javax.wsdl,
javax.xml.bind,
javax.xml.bind.annotation,
javax.ws.rs,
javax.ws.rs.core,
org.springframework.beans.factory.config,
org.apache.commons.httpclient,
org.apache.commons.httpclient.methods
</Import-Package>
<Export-Package>
org.apache.karaf.shell.cxf.jaxrs
</Export-Package>
</instructions>
<target>1.8</target>
<source>1.8</source>
</configuration>
<version>2.5.3</version>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<mainClass>org.apache.karaf.shell.Service</mainClass>
<includePluginDependencies>false</includePluginDependencies>
<target>1.8</target>
<source>1.8</source>
</configuration>
<extensions>true</extensions>
</plugin>
</plugins>
</build>
</project>
I try to change java version to 1.5, 1.6, 1.7 but still the same error with other java SE version
I am using Eclipse Luna Java EE

The osgi.ee requirement was introduced in maven bundle plugin 2.5.0. So the simplest way to get rid of it is to downgrade to the bundle plugin 2.4.
To change the java language version refered to in the requirement you have to use the maven-compiler-plugin and set the target and source parameters there. You can not change the java version in the maven bundle plugin config.

Add groovy library in mvn project

I'm new into Groovy and I'm trying to write a very simple project using Groovy as language. I was able to write a hello world script, deploy an mvn artifact and execute it.
I'm going beyond that right now and I need to import some external libraries for testing matters but I don't know how to do that.
I would really appreciate if you could give me some tips about this.
Thanks!

You can specify dependencies for the project which have test scope, in which case they will not be used in compile scope, or you can specify dependencies which are only used in certain scenarios (if, for example, you want to write Groovy tests without requiring the rest of your team to do so).
This sample pom.xml has a custom profile element which describes dependencies and executions to run only if the current environment user is "andylopresto". This means that if my team doesn't want to use Groovy in their build, I could still write my test classes in Groovy and have them run as part of the standard mvn test phase on my machine only. In my team members' local machines (or a shared Jenkins instance), the Groovy test files will be ignored (not compiled or run, and the groovy-all dependency will not even be downloaded onto the machine).
Example:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>your.package</groupId>
<artifactId>artifact</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<developers>
<developer>
<id>alopresto</id>
<name>Andy LoPresto</name>
<email>alopresto#example.com</email>
<roles>
<role>developer</role>
<role>owner</role>
</roles>
</developer>
<developer>
<id>jjava</id>
<name>Johnny Java</name>
<email>ihategroovy#example.com</email>
<roles>
<role>sticking to older languages</role>
</roles>
</developer>
</developers>
<dependencyManagement>
<dependencies>
<!-- This dependency is available to all project code -->
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
<!-- This dependency is only available during test phase -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- This dependency is expected to be provided outside of Maven -->
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-util</artifactId>
<version>8.0.8</version>
<scope>provided</scope>
</dependency>
</dependencies>
</dependencyManagement>
<profiles>
<profile>
<!-- Custom profile for Groovy tests used only on Andy's computer -->
<id>andyLocalTest</id>
<activation>
<property>
<name>env.USER</name>
<value>andylopresto</value>
</property>
</activation>
<dependencies>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>2.2.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.8</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>src/main/groovy</source>
</sources>
</configuration>
</execution>
<execution>
<id>add-test-source</id>
<phase>generate-test-sources</phase>
<goals>
<goal>add-test-source</goal>
</goals>
<configuration>
<sources>
<source>src/test/groovy</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<compilerId>groovy-eclipse-compiler</compilerId>
<source>1.6</source>
<target>1.6</target>
<includes>
<include>**/*.java</include>
<include>**/*.groovy</include>
</includes>
</configuration>
<dependencies>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-eclipse-compiler</artifactId>
<version>2.8.0-01</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-eclipse-batch</artifactId>
<version>2.1.5-03</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</profile>
</profiles>