eclipse的hadoop插件对集群操作提示org.apache.hadoop.security.AccessControlException:Permission denied
eclipse的hadoop插件对集群操作提示org.apache.hadoop.security.AccessControlException:Permission denied: user = zhangsan,access=WRITE,inode="/user/hadoop":hadoop:supergroup:drwxr-xr-x
因为用eclipse的hadoop的插件提交代码时，会默认用win下边的身份操作远程hdfs文件系统，比如我的win系统的登陆名是zhangsan,而hdfs的身份为/user/hadoop，由于zhangsan对文件系统没有写入权限，所以导致了异常发生。
解决办法：$ hadoop fs -chmod 777 /user/hadoop ，放开hadoop目录的权限，如果要恢复原来默认，运行：$ hadoop fs -chmod 755 /user/hadoop
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