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Hadoop, mail # user - Re: Distributed hadoop setup 0 live datanode problem in cluster


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Re: Distributed hadoop setup 0 live datanode problem in cluster
Jeff Zhang 2010-03-17, 07:14
Can you post your namenode's log ? It seems that your data node can not
connect to the name node.

On Wed, Mar 17, 2010 at 2:43 PM, William Kang <[EMAIL PROTECTED]>wrote:

> Hi,
> I just moved from pseudo distributed hadoop to a four machine full
> distributed hadoop setup.
>
> But, after I start the dfs, there is no live node showing up. If I make
> master a slave too, then the datanode in master machine will show up.
>
> I looked up all logs and found no errors. The only thing
> looks suspicious  is the log in the datanode:
>
>
> ************************************
> 2010-03-17 02:39:04,003 INFO org.apache.hadoop.ipc.RPC: Server at
> /xx.xx.xx.xx:9000 not available yet, Zzzzz...
> 2010-03-17 02:39:06,064 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 0 time(s).
> 2010-03-17 02:39:07,076 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 1 time(s).
> 2010-03-17 02:39:08,081 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 2 time(s).
> 2010-03-17 02:39:09,098 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx6:9000. Already tried 3 time(s).
> 2010-03-17 02:39:10,159 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 4 time(s).
> 2010-03-17 02:39:11,179 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 5 time(s).
> 2010-03-17 02:39:12,221 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 6 time(s).
> 2010-03-17 02:39:13,372 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 7 time(s).
> 2010-03-17 02:39:14,545 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 8 time(s).
> 2010-03-17 02:39:15,558 INFO org.apache.hadoop.ipc.Client: Retrying connect
> to server: /xx.xx.xx.xx:9000. Already tried 9 time(s).
> *************************************
>
> Does anybody know what might cause this problem?
>
> ssh among these machines are fine without password. The owner of hadoop
> folder has been changed to the same hadoop user.
>
> Thanks!
>
>
> William
>

--
Best Regards

Jeff Zhang