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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Child processes on datanodes/task trackers
Date Thu, 26 Aug 2010 02:34:35 GMT
After you obtain pid, you can use jstack to see what the Child process was
doing.

What hadoop version are you using ?

On Wed, Aug 25, 2010 at 7:28 PM, C J <c.joshi26@yahoo.com> wrote:

> Thanks for your reply.
>
> Some of these child tasks belong to successful jobs. I am wondering why
> they are
> still hanging there for long finished jobs.
>
>
>
>
>
> ________________________________
> From: Ted Yu <yuzhihong@gmail.com>
> To: general@hadoop.apache.org
> Sent: Wed, August 25, 2010 4:17:38 PM
> Subject: Re: Child processes on datanodes/task trackers
>
> Use jps to find out pid of the Child.
> Then use this to find out which job the Child belongs to:
> ps aux | grep <pid>
>
> On Wed, Aug 25, 2010 at 12:20 PM, C J <c.joshi26@yahoo.com> wrote:
>
> > Hi,
> >
> > I wanted to know why I see running Child processes on my datanodes even
> > though
> > there is no job running at that time. Are these left over from failed
> > attempts?
> >
> > Is there anything I can do to keep these clean?
> >
> > Thanks,
> > Deepika
> >
> >
> >
>
>
>
>
>

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