单机版hadoop环境， Name node is in safe mode，启动报错

单机版hadoop环境， Name node is in safe mode，启动报错

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

The reported blocks 3 has reached the threshold 0.9990 of total blocks 3. Safe mode will be turned off automatically in 27 seconds.

at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setPermission(FSNamesystem.java:856)

at org.apache.hadoop.hdfs.server.namenode.NameNode.setPermission(NameNode.java:739)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

当我leave的时候，start-all.sh就报错

你看看配置文件，config-site，参考hadoop单击配置http://www.aboutyun.com/thread-5663-1-1.html