hadoop出现文件夹无法删除,Name node is in safe mode.

今天在运行操作hadoop的时候,出现

[hadoop@localhost hadoop-0.20.203.0]$ bin/hadoop dfs -rmr output
rmr: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete /user/hadoop/output. Name node is in safe mode.


这是因为Name node 处于安全模式中。


如何关闭安全模式呢?

命令为:

[hadoop@localhost hadoop-0.20.203.0]$ bin/hadoop dfsadmin -safemode leave



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