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https://issues.apache.org/jira/browse/MAPREDUCE-4423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13419524#comment-13419524
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Thomas Graves commented on MAPREDUCE-4423:
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I'm going to revert this because this seems to have uncovered another bug where
map output comes back as OK but has internal error in the body. We need to
investigate that more.
> Potential infinite fetching of map output
> -----------------------------------------
>
> Key: MAPREDUCE-4423
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4423
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.3, 2.1.0-alpha, 3.0.0
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Priority: Critical
> Fix For: 0.23.3, 3.0.0, 2.2.0-alpha
>
> Attachments: MR-4423.txt, MR-4423.txt
>
>
> Inside Fetcher.java there are a few cases where an error can happen and the
> corresponding map task is not marked as a fetch failure. One of these is if
> the Shuffle server returns a malformed result.
> MAPREDUCE-3992 makes this case a lot less common, but it is still possible.
> IF the shuffle handler always returns a malformed result, but a OK response
> the Fetcher will never stop trying to fetch those results.
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