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Posted to common-user@hadoop.apache.org by Saptarshi Guha <sa...@gmail.com> on 2010/03/14 08:50:07 UTC

Class hook for Tasktracker JVM start/stop

Hello,
The value mapred.job.reuse.jvm.num.tasks is the number of tasks a Tasktracker
will process before it shuts down and another Tasktracker starts, correct?

If so, is there a hook/class that can be called when the jvm(corresponding to
the TaskTracker) starts and one when it shuts down? Can this class be provided
with the Cofiguration/context object?

Much thanks
Saptarshi

Re: Class hook for Tasktracker JVM start/stop

Posted by Saptarshi Guha <sa...@gmail.com>.

please forget i asked this question ...

On Sun, Mar 14, 2010 at 2:50 AM, Saptarshi Guha
<sa...@gmail.com> wrote:
> Hello,
> The value mapred.job.reuse.jvm.num.tasks is the number of tasks a Tasktracker
> will process before it shuts down and another Tasktracker starts, correct?
>
> If so, is there a hook/class that can be called when the jvm(corresponding to
> the TaskTracker) starts and one when it shuts down? Can this class be provided
> with the Cofiguration/context object?
>
> Much thanks
> Saptarshi
>