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https://issues.apache.org/jira/browse/MAPREDUCE-4910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13543701#comment-13543701
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Tsuyoshi OZAWA commented on MAPREDUCE-4910:
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Note that this version supports only work well and doesn't support fault
tolerance(FT).
I, however, attached the current patch because I'd like to have review of
design.
It's easy task because the failures can be dealt with MRAppMaster's
maintainance of AggregationWaitMap when MRAppMaster detects failures. I'll
create updated patch for FT, in a next few days.
> Adding AggregationWaitMap to some components(MRAppMaster,
> TaskAttemptListener, JobImpl, MapTaskImpl).
> -----------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4910
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4910
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: applicationmaster, mrv2, task
> Reporter: Tsuyoshi OZAWA
> Assignee: Tsuyoshi OZAWA
> Attachments:
> 0003-Adding-AggregationWaitMap-to-some-components-MRAppMa.patch
>
>
> To implement MR-4502, AggregationWaitMap need to be used by some
> components(MRAppMaster, TaskAttemptListener, JobImpl, MapTaskImpl).
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