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https://issues.apache.org/jira/browse/MAPREDUCE-4518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13429341#comment-13429341
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Hadoop QA commented on MAPREDUCE-4518:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12539254/MR-4518_branch1.patch
against trunk revision .
-1 patch. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2712//console
This message is automatically generated.
> FairScheduler: PoolSchedulable#updateDemand() - potential redundant
> aggregation
> -------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4518
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4518
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: contrib/fair-share
> Affects Versions: 1.0.3
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Attachments: MR-4518_branch1.patch
>
>
> In FS, PoolSchedulable#updateDemand() limits the demand to maxTasks only
> after iterating though all the pools and computing the final demand.
> By checking if the demand has reached maxTasks in every iteration, we can
> avoid redundant work, at the expense of one condition check every iteration.
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