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From Arun C Murthy <...@hortonworks.com>
Subject Re: Lost task tracker reschedules all tasktracker's successful map tasks
Date Fri, 30 Sep 2011 04:53:35 GMT
No, this is expected.

A correction - it's not all tasks, just map-tasks of currently active jobs which are re-executed.

Ravi Teja explained why in his previous response to this same question.


On Sep 29, 2011, at 9:14 AM, Leonardo Gamas wrote:

> Hi,
> I have a very large MapReduce Job and sometimes a TaskTracker doesn't send a
> heartbeat in the preconfigured amount of time, so it's considered dead. It's
> ok, but all tasks already finished by this TaskTracker are lost too, or
> better explained, are rescheduled and re-executed by another TaskTracker.
> This is a default behavior or i'm experiencing some bug or miss
> configuration?
> My reguards,
> Leonardo Gamas

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