[问题解决]hadoop eclipse plugin

环境：
hadoop 1.2.0
问题：
eclipse报错"Error:failure to login"
原因：
检查eclipse日志，缺少依赖包，报NoClassDefFoundError
解决方法：
src/contrib/eclipse-plugin目录
修改build.xml

<target name="jar" depends="compile" unless="skip.contrib">
    <mkdir dir="${build.dir}/lib"/>
    <copy file="${hadoop.root}/build/hadoop-core-${version}.jar" tofile="${build
.dir}/lib/hadoop-core.jar" verbose="true"/>
    <copy file="${hadoop.root}/lib/commons-configuration-1.6.jar" tofile="${buil
d.dir}/lib/commons-configuration-1.6.jar" verbose="true"/>
    <copy file="${hadoop.root}/lib/commons-lang-2.4.jar" tofile="${build.dir}/li
b/commons-lang-2.4.jar" verbose="true"/>
    <copy file="${hadoop.root}/lib/jackson-core-asl-1.8.8.jar" tofile="${build.d
ir}/lib/jackson-core-asl-1.8.8.jar" verbose="true"/>
    <copy file="${hadoop.root}/lib/jackson-mapper-asl-1.8.8.jar" tofile="${build
.dir}/lib/jackson-mapper-asl-1.8.8.jar" verbose="true"/>
    <copy file="${hadoop.root}/build/ivy/lib/Hadoop/common/commons-cli-${commons
-cli.version}.jar"  todir="${build.dir}/lib" verbose="true"/>
    <jar
      jarfile="${build.dir}/hadoop-${name}-${version}.jar"
      manifest="${root}/META-INF/MANIFEST.MF">
      <fileset dir="${build.dir}" includes="classes/ lib/"/>
      <fileset dir="${root}" includes="resources/ plugin.xml"/>
    </jar>
  </target>

修改META-INF/MANIFEST.MF

Bundle-ClassPath: classes/,
 lib/hadoop-core.jar,
 lib/jackson-mapper-asl-1.8.8.jar,
 lib/jackson-core-asl-1.8.8.jar,
 lib/commons-cli-1.2.jar,
 lib/commons-configuration-1.6.jar,
 lib/commons-lang-2.4.jar

重新编译

ant -Declipse.home=/home/vbigq/hadoop/eclipse -Dversion=1.2.0

重新安装插件