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https://issues.apache.org/jira/browse/MAPREDUCE-4487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14525390#comment-14525390
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Hadoop QA commented on MAPREDUCE-4487:
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(!) The patch artifact directory has been removed!
This is a fatal error for test-patch.sh. Aborting.
Jenkins (node H3) information at
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5590/ may provide some
hints.
> Reduce job latency by removing hardcoded sleep statements
> ---------------------------------------------------------
>
> Key: MAPREDUCE-4487
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4487
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv1, mrv2, performance
> Affects Versions: 1.0.3, 2.0.0-alpha
> Reporter: Tom White
> Assignee: Tom White
> Attachments: MAPREDUCE-4487-mr2.patch, MAPREDUCE-4487.patch
>
>
> There are a few places in MapReduce where there are hardcoded sleep
> statements. By replacing them with wait/notify or similar it's possible to
> reduce latency for short running jobs.
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