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Hadoop, mail # dev - Warning in running mapreduce jobs


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Ranjan Banerjee 2012-04-17, 00:56
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Harsh J 2012-04-17, 07:59
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Re: Warning in running mapreduce jobs
Niels Basjes 2012-04-17, 04:44
What does your input look like?

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Met vriendelijke groet,
Niels Basjes
(Verstuurd vanaf mobiel )
Op 17 apr. 2012 02:57 schreef "Ranjan Banerjee" <[EMAIL PROTECTED]> het
volgende:

> Hello,
>   I am running the default map reduce  job (word count) in Hadoop. The job
> runs fine and I am able to delve into the statistics. However I get a
> warning as follows
> "No job jar file set.  User classes may not be found. See JobConf(Class)
> or JobConf#setJar(String)."
>   Also I set the following parameter in the core-site.xml
>
>
> <property>
>  <name>mapred.map.tasks</name>
>  <value>2</value>
>  <description>The default number of map tasks per job.  Typically set
>  to a prime several times greater than number of available hosts.
>  Ignored when mapred.job.tracker is "local".
>  </description>
> </property>
> However I still get only one map task and not two. Can someone suggest the
> solution to this problem.
>
> Thanking you
>
> Yours faithfully
> Ranjan Banerjee
>
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Ranjan Banerjee 2012-04-17, 14:08