LINUX下将hadoop-0.21自带的hadoop eclipse plugin放到eclipse dropins目录中无法正常运行，使用eclipse -consolelog 发现找不到hadoop的类，解压hadoop-0.21.0-eclipse-plugin.jar发现META-INF下的MANIFEST.MF文 件中，Bundle-ClassPath写的有问题，他写的是/lib/hadoop-core.jar,把hadoop目录下的hadoop- common-0.21.0.jar,hadoop-hdfs-0.21.0.jar,hadoop-mapred-0.21.0.jar,log4j- 1.2.15.jar放到lib下

 

然后修改Bundle-ClassPath,把上述几个文件放进去，重新打包为jar文件，放到eclipse dropins目录下即可