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https://issues.apache.org/jira/browse/MAPREDUCE-4124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13261290#comment-13261290
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xieguiming commented on MAPREDUCE-4124:
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Robert, you are right. the schedulers do not use the priority currently.
I think we can change the FIFOschedulers to support the priority firstly.
Currently, the FIFOschedulers only sort by submiting time. and we can change
to sort by priority firstly, and then by submiting time.
> Job Priority is not changing
> -----------------------------
>
> Key: MAPREDUCE-4124
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4124
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 3.0.0
> Reporter: Nishan Shetty
> Priority: Critical
>
> 1.Submit job
> 2.Change the job priority using setPriority() or CLI command ./mapred
> job-set-priority <job-id> <priority>
> Observe that Job priority is not changed.
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