0
我在vmware的Debian linux發行版本地安裝了Hadoop,而且我在運行測試作業時遇到了困難。運行hadoop作業:找不到類 - org.apache.tools.ant.launch.AntMain
我可以輕鬆構建IntelliJ Idea創建包,即使我的mrunit測試也按預期通過。
有一次,我嘗試運行工作,我得到以下異常:
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$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
我確信,所有的依賴,包括在罐子 - 我所看到的,ANT 1.6.5包含。
我甚至嘗試安裝ANT並將$ ANT_HOME設置爲它的位置,但沒有任何效果。
我可能會做錯什麼?
我使用下面的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>
謝謝!