是不是安全模式下Cannot delete /home/hadoop/tmp/mapred/system. Name node is in...

[hadoop@rhel logs]$ hadoop dfsadmin -safemode get

Safe mode is ON

[hadoop@rhel logs]$ jps

2255 TaskTracker

2542 Jps

2141 JobTracker

1889 NameNode

2060 SecondaryNameNode

[hadoop@rhel logs]$

这是正常情况吗？

是不是安全模式下，没有datanode

报错如下：

org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete /home/hadoop/tmp/mapred/system. Name node is in safe mode.

The ratio of reported blocks 0.0000 has not reached the threshold 0.9990. Safe mode will be turned off automatically.

你重启一下

重启hadoop就好了