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https://issues.apache.org/jira/browse/MAPREDUCE-4128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252761#comment-13252761
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Robert Joseph Evans commented on MAPREDUCE-4128:
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We have over 1700 javac warnings right now. I don't think 3 more of the same
type are a big deal. But I really don't see anyone ever going back to clean
them up, no matter how much I would like to have it happen.
> AM Recovery expects all attempts of a completed task to also be completed.
> --------------------------------------------------------------------------
>
> Key: MAPREDUCE-4128
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4128
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 3.0.0
> Reporter: Bikas Saha
> Assignee: Bikas Saha
> Fix For: 3.0.0
>
> Attachments: MAPREDUCE-4128-1.patch, MAPREDUCE-4128.patch
>
>
> The AM seems to assume that all attempts of a completed task (from a previous
> AM incarnation) would also be completed. There is at least one case in which
> this does not hold. Case being cancellation of a completed task resulting in
> a new running attempt.
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