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List:       hadoop-user
Subject:    Re: getting the process id of mapreduce tasks
From:       bikash sharma <sharmabiks.07 () gmail ! com>
Date:       2011-09-30 12:52:15
Message-ID: CAMb6vStGkzt6BgETu9tOxeWKrDM+weajZ5Xq8PqJef94+p2wTA () mail ! gmail ! com
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Thanks Varad.

On Wed, Sep 28, 2011 at 9:35 PM, Varad Meru <meru.varad@gmail.com> wrote:

> The process ids of each individual task can be seen using jps and jconsole
> commands provided by java.
>
> jconsole command on command-line interface provides a GUI screen for
> monitoring running tasks within java.
>
> The tasks are only visible as java virtual machine instance in the os
> system monitoring tool.
>
>
> Regards,
> Varad Meru
> -----------------------------------
> Sent from my iPod
>
> On 29-Sep-2011, at 0:15, bikash sharma <sharmabiks.07@gmail.com> wrote:
>
> > Hi,
> > Is it possible to get the process id of each task in a MapReduce job?
> > When I run a mapreduce job and do a monitoring in linux using ps, i just
> see
> > the id of the mapreduce job process but not its constituent map/reduce
> > tasks.
> > The use case is to monitor the resource usage of each task by using sar
> > utility in linux with specific process id of task.
> >
> > Thanks,
> > Bikash
>


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