Can't compile my classes with maven.

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Hi,

I can’t compile my java class using my |pom.xml|, and I can’t find the 
problem. Can anyone help me to point what it is wrong?

Directory structure

|hadoop-wordcount-coc$ tree
.
├── output.txt
├── pom.xml
└── src
    └── org
        └── apache
            └── hadoop
                └── mapred
                    └── examples
                        ├── WordCount.java
                        └── workbench.xmi
|

output of the jar created with with |pom.xml|

|hadoop-wordcount-coc$ jar tf target/wordcount.jar
META-INF/
META-INF/MANIFEST.MF
META-INF/maven/
META-INF/maven/org.apache.hadoop.mapred.example/
META-INF/maven/org.apache.hadoop.mapred.example/WordCount/
META-INF/maven/org.apache.hadoop.mapred.example/WordCount/pom.xml
META-INF/maven/org.apache.hadoop.mapred.example/WordCount/pom.properties
|

|pom.xml|

|hadoop-wordcount-coc$ cat 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.hadoop.mapred.example</groupId>
  <artifactId>WordCount</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>WordCount CoC</name>
  <url>http://maven.apache.org</url>

  <properties>
    <jdk.version>1.7</jdk.version>
    <junit.version>4.11</junit.version>
    <log4j.version>1.2.17</log4j.version>
  </properties>


  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.8.2</version>
      <scope>test</scope>
    </dependency>
  <dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-yarn-api</artifactId>
    <version>2.6.0</version>
  </dependency>
  </dependencies>

<build>
  <finalName>wordcount</finalName>
  
<sourceDirectory>${basedir}/src/org/apache/hadoop/mapred/examples</sourceDirectory>
  <plugins>

    <!-- download source code in Eclipse, best practice -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-eclipse-plugin</artifactId>
      <version>2.9</version>
      <configuration>
    <downloadSources>true</downloadSources>
    <downloadJavadocs>false</downloadJavadocs>
      </configuration>
    </plugin>

    <!-- Set a compiler level -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>2.3.2</version>
      <configuration>
    <source>${jdk.version}</source>
    <target>${jdk.version}</target>
    <includes>
      <include>src/**/*.java</include>
    </includes>
      </configuration>
    </plugin>

    <!-- Compile the code -->
     <!-- plugin>
            <artifactId>exec-maven-plugin</artifactId>
            <configuration>
              <mainClass>org.apache.hadoop.mapred.examples.WordCount</mainClass>
              <archive>
                <manifest>
                  <mainClass>fully.qualified.MainClass</mainClass>
                </manifest>
                <manifestEntries>
                    <Class-Path>.</Class-Path>
                </manifestEntries>
              </archive>
              <descriptorRefs>
                <descriptorRef>jar-with-dependencies</descriptorRef>
              </descriptorRefs>
            </configuration>
            <groupId>org.codehaus.mojo</groupId>
            <version>1.2.1</version>
        </plugin -->


    <!-- Make this jar executable -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-jar-plugin</artifactId>
      <configuration>
      <mainClass>org.apache.hadoop.mapred.examples.WordCount</mainClass>
      <excludes>
        <exclude>**/log4j.properties</exclude>
      </excludes>
        <archive>
              <manifest>
            <addClasspath>true</addClasspath>
            <mainClass>org.apache.hadoop.mapred.examples.WordCount</mainClass>
            <classpathPrefix>dependency-jars/</classpathPrefix>
          </manifest>
        </archive>
      </configuration>
    </plugin>

    <!-- Copy project dependency -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-dependency-plugin</artifactId>
      <version>2.5.1</version>
      <executions>
      <execution>
        <id>copy-dependencies</id>
        <phase>package</phase>
        <goals>
          <goal>copy-dependencies</goal>
        </goals>
        <configuration>
        <!-- exclude junit, we need runtime dependency only -->
        <includeScope>runtime</includeScope>
        
<outputDirectory>${project.build.directory}/dependency-jars/</outputDirectory>
        </configuration>
      </execution>
      </executions>
    </plugin>
  </plugins>
  <resources>
      <resource>
          <directory>target</directory>
          <includes><include>**/*.class</include></includes>
      </resource>
      <resource>
          <directory>src/main/resources/META-INF</directory>
          <targetPath>${basedir}/target</targetPath>
          <includes> <include>log4j.properties</include>
          <include>servers.json</include> </includes>
      </resource>
  </resources>
</build>
</project>
|

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