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https://issues.apache.org/jira/browse/MAPREDUCE-5517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14054143#comment-14054143
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Vinod Kumar Vavilapalli commented on MAPREDUCE-5517:
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This looks good. Checking this in..
> enabling uber mode with 0 reducer still requires mapreduce.reduce.memory.mb
> to be less than yarn.app.mapreduce.am.resource.mb
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5517
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5517
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.0.5-alpha
> Reporter: Siqi Li
> Assignee: Siqi Li
> Priority: Minor
> Attachments: MAPREDUCE_5517_v3.patch.txt,
> MAPREDUCE_5517_v4.patch.txt, MAPREDUCE_5517_v5.patch, MAPREDUCE_5517_v6.patch
>
>
> Since there is no reducer, the memory allocated to reducer is irrelevant to
> enable uber mode of a job
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