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From Shamshad Ansari <sans...@apixio.com>
Subject Re: SafeModeException on starting up
Date Sat, 17 Nov 2012 03:33:06 GMT
To turn the safe mode off manually, you can run the following command:


hadoop dfsadmin -safemode leave

Hope this helps.



On Fri, Nov 16, 2012 at 7:21 PM, Li Li <fancyerii@gmail.com> wrote:

> hi all,
>      I am trying to set up a hadoop cluster. But when I use start-all.sh
> to start it. it throws exception:
> 2012-11-17 10:40:21,662 ERROR
> org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException
> as:work cause:org.apache.hadoop.hdfs.server.namenode.SafeModeException:
> Cannot delete /home/work/lili/mapred/system. Name node is in safe mode.
> The ratio of reported blocks 1.0000 has reached the threshold 0.9990. Safe
> mode will be turned off automatically in 27 seconds.
> 2012-11-17 10:40:21,663 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 5 on 9000, call delete(/home/work/lili/mapred/system, true) from
> 10.81.33.22:20183: error:
> org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete
> /home/work/lili/mapred/system. Name node is in safe mode.
> The ratio of reported blocks 1.0000 has reached the threshold 0.9990. Safe
> mode will be turned off automatically in 27 seconds.
> org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete
> /home/work/lili/mapred/system. Name node is in safe mode.
> The ratio of reported blocks 1.0000 has reached the threshold 0.9990. Safe
> mode will be turned off automatically in 27 seconds.
>     at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.deleteInternal(FSNamesystem.java:1994)
>     at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.delete(FSNamesystem.java:1974)
>     at
> org.apache.hadoop.hdfs.server.namenode.NameNode.delete(NameNode.java:792)
>     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)
>     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)
>     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
>     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
>

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