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From vivek <vivvekbha...@gmail.com>
Subject Re: Error and problem when running a hadoop job
Date Tue, 09 Sep 2014 15:27:08 GMT
check whether datanode is started.


On Tue, Sep 9, 2014 at 7:26 PM, YIMEN YIMGA Gael <gael.yimen-yimga@sgcib.com
> wrote:

> Yes, all about ssh access, have been done.
>
>
>
> My cluster is a single node cluster.
>
>
>
> Standing by …
>
>
>
> *From:* Sandeep Khurana [mailto:skhurana333@gmail.com]
> *Sent:* Tuesday 9 September 2014 15:54
> *To:* user@hadoop.apache.org
> *Subject:* Re: Error and problem when running a hadoop job
>
>
>
> I hope you did do passphrase less ssh access to localhost by generating
> keys etc?
>
> On Sep 9, 2014 7:18 PM, "YIMEN YIMGA Gael" <gael.yimen-yimga@sgcib.com>
> wrote:
>
> Hello Dear hadoopers,
>
>
>
> I hope you are doing well.
>
>
>
> I tried to run WordCount.jar file to experience running hadoop jobs. After
> launching the program as shown in the screenshot below, I have the message
> in the screenshot.
>
> The job tries to connect to the datanode. But failed after 10 attempts, I
> got the error in the second screenshot.
>
> After that, I first stop all the Hadoop deamons, second format the dfs,
> third re-launch Hadoop deamons, and I notice using the JPS command that
> DATANODE is not running.
>
> I then run the datanode alone with the command bin/hadoop –deamon.sh
>  start datanode as shown in the third screenshot, but the datanode is still
> not up and running.
>
>
>
> Could someone advice in this case, please ?
>
>
>
> Standing by for your habitual support.
>
>
>
> Thank in advance.
>
>
>
> GYY
>
>
>
>
>
>
>
>
>
>
>
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-- 







Thanks and Regards,

VIVEK KOUL

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