[hadoop@Master ~]$ hadoop namenode -format
Warning: $HADOOP_HOME is deprecated.
16/11/21 02:14:54 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = Master.Hadoop/192.168.0.235
STARTUP_MSG: args = [-format]
STARTUP_MSG: version = 1.0.0
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.0 -r 1214675; compiled by 'hortonfo' on Thu Dec 15 16:36:35 UTC 2011
************************************************************/
Re-format filesystem in /usr/hadoop/tmp/dfs/name ? (Y or N) y
Format aborted in /usr/hadoop/tmp/dfs/name
Warning: $HADOOP_HOME is deprecated.
16/11/21 02:14:54 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = Master.Hadoop/192.168.0.235
STARTUP_MSG: args = [-format]
STARTUP_MSG: version = 1.0.0
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.0 -r 1214675; compiled by 'hortonfo' on Thu Dec 15 16:36:35 UTC 2011
************************************************************/
Re-format filesystem in /usr/hadoop/tmp/dfs/name ? (Y or N) y
Format aborted in /usr/hadoop/tmp/dfs/name
16/11/21 02:14:55 INFO namenode.NameNode: SHUTDOWN_MSG
将/usr/hadoop/tmp/dfs文件夹整个删除。然后再格，成功！！！