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https://issues.apache.org/jira/browse/YARN-111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13458680#comment-13458680
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Robert Joseph Evans commented on YARN-111:
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I thought that job priority was added into the 1.0 line a while ago, and then
it was more or less removed. You could still specify a priority, but the
priority itself was ignored. I am in favor of adding in priority again, but I
just want to be sure that we address the reasons why it was removed/disabled in
1.0. Assuming that I am remembering things correctly.
> Application level priority in Resource Manager Schedulers
> ---------------------------------------------------------
>
> Key: YARN-111
> URL: https://issues.apache.org/jira/browse/YARN-111
> Project: Hadoop YARN
> Issue Type: Improvement
> Affects Versions: 2.0.1-alpha
> Reporter: nemon lou
>
> We need application level priority for Hadoop 2.0,both in FIFO scheduler and
> Capacity Scheduler.
> In Hadoop 1.0.x,job priority is supported.
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