1.编译hadoop2.6.0的eclipse插件
编译源码：
cd src/contrib/eclipse-plugin
ant jar -Dversion=2.6.0 -Declipse.home=/opt/eclipse -Dhadoop.home=/opt/hadoop-2.6.0
eclipse.home 和 hadoop.home 设置成你自己的环境路径
命令行执行编译，产生了8个警告信息，直接忽略。
compile:
[echo] contrib: eclipse-plugin
[javac] /software/hadoop2x-eclipse-plugin/src/contrib/eclipse-plugin/build.xml:76: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
[javac] Compiling 45 source files to /software/hadoop2x-eclipse-plugin/build/contrib/eclipse-plugin/classes
[javac] /opt/hadoop-2.6.0/share/hadoop/common/hadoop-common-2.6.0.jar(org/apache/hadoop/fs/Path.class): warning: Cannot find annotation method 'value()' in type 'LimitedPrivate': class file for org.apache.hadoop.classification.InterfaceAudience not found
[javac] /opt/hadoop-2.6.0/share/hadoop/hdfs/hadoop-hdfs-
编译源码：
cd src/contrib/eclipse-plugin
ant jar -Dversion=2.6.0 -Declipse.home=/opt/eclipse -Dhadoop.home=/opt/hadoop-2.6.0
eclipse.home 和 hadoop.home 设置成你自己的环境路径
命令行执行编译，产生了8个警告信息，直接忽略。
compile:
[echo] contrib: eclipse-plugin
[javac] /software/hadoop2x-eclipse-plugin/src/contrib/eclipse-plugin/build.xml:76: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
[javac] Compiling 45 source files to /software/hadoop2x-eclipse-plugin/build/contrib/eclipse-plugin/classes
[javac] /opt/hadoop-2.6.0/share/hadoop/common/hadoop-common-2.6.0.jar(org/apache/hadoop/fs/Path.class): warning: Cannot find annotation method 'value()' in type 'LimitedPrivate': class file for org.apache.hadoop.classification.InterfaceAudience not found
[javac] /opt/hadoop-2.6.0/share/hadoop/hdfs/hadoop-hdfs-
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