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https://issues.apache.org/jira/browse/MAPREDUCE-7464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18024831#comment-18024831
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ASF GitHub Bot commented on MAPREDUCE-7464:
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github-actions[bot] commented on PR #6381:
URL: https://github.com/apache/hadoop/pull/6381#issuecomment-3369555314
We're closing this stale PR because it has been open for 100 days with no
activity. This isn't a judgement on the merit of the PR in any way. It's just a
way of keeping the PR queue manageable.
If you feel like this was a mistake, or you would like to continue working
on it, please feel free to re-open it and ask for a committer to remove the
stale tag and review again.
Thanks all for your contribution.
> Make priority of mapreduce tasks configurable
> ---------------------------------------------
>
> Key: MAPREDUCE-7464
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7464
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: liu bin
> Priority: Major
> Labels: pull-request-available
>
> When maps and reduces run simultaneously, if resources are insufficient,
> reduces will be preempted.
> Because the priority of reduce is higher than map, the preempted reduces will
> first obtain resources when rerun, and then be preempted again, falling into
> a loop.
> We need to configure the priority of map higher than reduce to avoid this
> situation.
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