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Posted to mapreduce-user@hadoop.apache.org by Radim Kolar <hs...@sendmail.cz> on 2011/11/28 21:31:55 UTC

Reduce tasks timeouts

I have problem with reduce tasks ending like this:
Task attempt_201111250441_0009_r_000001_1 failed to report status for 602 seconds. Killing!

Every reduce tasks running on particular block ends like this.

can it be caused that list for one key is too long or because processing of one list item takes too long?

Re: Reduce tasks timeouts

Posted by Radim Kolar <hs...@sendmail.cz>.

Dne 28.11.2011 21:34, Marcos Luis Ortiz Valmaseda napsal(a):
> Can you put here the output logs of your NN and DN servers?
> Regards
here are logs. No errors inside.

https://rapidshare.com/files/3666961563/hadoop-logs.zip

Re: Reduce tasks timeouts

Posted by Marcos Luis Ortiz Valmaseda <ma...@googlemail.com>.

Can you put here the output logs of your NN and DN servers?
Regards

2011/11/28 Radim Kolar <hs...@sendmail.cz>:
> I have problem with reduce tasks ending like this:
> Task attempt_201111250441_0009_r_000001_1 failed to report status for 602
> seconds. Killing!
>
> Every reduce tasks running on particular block ends like this.
>
> can it be caused that list for one key is too long or because processing of
> one list item takes too long?
>
>



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Marcos Luis Ortíz Valmaseda
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