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https://issues.apache.org/jira/browse/MAPREDUCE-55?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12731266#action_12731266
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Jothi Padmanabhan commented on MAPREDUCE-55:
--------------------------------------------
Even the GetMapCompletionEvents thread is catching and ignoring OutOfMemory
Errors. When it does this, some event completion updates are lost and the
reducer just hangs.
> Reduce task should stop shuffle-retrying in case of out-of-memory errors
> ------------------------------------------------------------------------
>
> Key: MAPREDUCE-55
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-55
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Amareshwari Sriramadasu
>
> In ReduceTask, MapOutputCopier threads catch Throwble and retry happens for
> the shuffle. It should not retry incase of Errors suchas OutOfMemoryError etc.
> May be it should retry only in case of Connect/Read failures and die in all
> other cases. Thoughts?
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