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Hadoop, mail # dev - hadoop JobTRACKER error HELP!!!


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Re: hadoop JobTRACKER error HELP!!!
Rajesh Balamohan 2010-08-07, 03:09
The following command will switch off safemode.

./hadoop dfsadmin -safemode leave

On Thu, Aug 5, 2010 at 12:02 AM, Ahmad Shahzad <[EMAIL PROTECTED]> wrote:

> Hi ALL,
>           I am getting this error in JobTracker's log file. But when i
> format my namenode the error doesnt comes. But i can run hadoop only once.
> If i run it the second time the same error comes. Any clues??
> Also, i have put nothing in HDFS right now. I just start all the processes
> and the error comes.
>
> INFO org.apache.hadoop.mapred.JobTracker: problem cleaning system
> directory:
> hdfs://localhost:54310/usr/local/hadoop-datastore/hadoop-hadoop/m$
> org.apache.hadoop.ipc.RemoteException:
> org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete
> /usr/local/hadoop-datastore/hadoop-hadoop/mapred/system$
> The ratio of reported blocks 0.0000 has not reached the threshold 0.9990.
> Safe mode will be turned off automatically.
>        at
>
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.deleteInternal(FSNamesystem.java:1700)
>        at
>
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.delete(FSNamesystem.java:1680)
>        at
> org.apache.hadoop.hdfs.server.namenode.NameNode.delete(NameNode.java:517)
>        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$Server.call(RPC.java:508)
>        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
>        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at javax.security.auth.Subject.doAs(Subject.java:396)
>        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
>
>        at org.apache.hadoop.ipc.Client.call(Client.java:740)
>        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:221)
>        at $Proxy4.delete(Unknown Source)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>
>
> Ahmad
>

--
~Rajesh.B