13/12/04 16:17:18 ERROR security.UserGroupInformation: PriviledgedActionException as:aolx (auth:SIMPLE) cause:org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory hdfs://localhost:9000/out already exists13/12/04 16:17:18 ERROR security.UserGroupInfor
阅读背景：
PriviledgedActionException as:aolx (auth:SIMPLE) cause:org.apache.hadoop.mapred.FileAlreadyExistsException:
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