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https://issues.apache.org/jira/browse/MAPREDUCE-3921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13249844#comment-13249844
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Robert Joseph Evans commented on MAPREDUCE-3921:
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I did a quick look at the code and it looks good to me. As for the recovery
error you discovered could you please file a follow up JIRA for it, as it is a
preexisting issue that can be caused by AM recovery with speculative execution.
This patch may expose the issue more frequently, but not enough to really
worry me that much. You need two nodes going down very close to one another
which is possible, but not that often.
> MR AM should act on the nodes liveliness information when nodes go
> up/down/unhealthy
> ------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-3921
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3921
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mr-am, mrv2
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Bikas Saha
> Fix For: 0.23.2
>
> Attachments: MAPREDUCE-3921-1.patch,
> MAPREDUCE-3921-branch-0.23.patch, MAPREDUCE-3921-branch-0.23.patch,
> MAPREDUCE-3921-branch-0.23.patch, MAPREDUCE-3921.patch
>
>
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