Java 正在运行hadoop作业：找不到类-org.apache.tools.ant.launch.AntMain

我在vmware的Debian linux发行版上本地安装了Hadoop，运行测试作业时遇到困难

我可以很容易地用IntelliJ Idea构建和创建包，甚至我的mrunit测试也能如期通过

尝试运行作业后，出现以下异常：

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/AntMain
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:190)
Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.launch.AntMain
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)

我确保所有依赖项都包含在jar中——我可以看到，Ant1.6.5也包含在内

我甚至尝试安装ANT并将$ANT_HOME设置到它的位置，但没有效果

我可能做错了什么

我正在使用以下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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>tl.knyt</groupId>
    <artifactId>hanoi</artifactId>
    <version>1.0</version>
    <name>Hanoi</name>
    <url>http://maven.apache.org</url>

    <dependencies>
        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-core</artifactId>
            <version>0.20.2-cdh3u4</version>
        </dependency>

        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-mrunit</artifactId>
            <version>0.20.2-cdh3u4</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
        </dependency>

    </dependencies>
    <repositories>
        <repository>
            <id>cloudera.repos</id>
            <url>https://repository.cloudera.com/artifactory/cloudera-repos/</url>
            <name>Cloudera Repos</name>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>
</project>

4.0.0
tl.knyt
河内
1
河内
http://maven.apache.org
org.apache.hadoop
hadoop内核
0.20.2-cdh3u4
org.apache.hadoop
hadoop MRU
0.20.2-cdh3u4
朱尼特
朱尼特
4.10
cloudera.repos
https://repository.cloudera.com/artifactory/cloudera-repos/
Cloudera回购协议
真的

---

谢谢

确保在hadoop类路径中有org/apache/tools/ant/launch/AntMain的jar文件

您可以在$HADOOP_HOME/conf/HADOOP站点文件中编辑jar文件

要使更改生效，您必须重新启动hadoop