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https://issues.apache.org/jira/browse/MAPREDUCE-4423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13417689#comment-13417689
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Jason Lowe commented on MAPREDUCE-4423:
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Looks good overall. One small nit in that the {{good}} boolean was removed,
but a comment remains that refers to it.
> 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
> Attachments: 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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