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https://issues.apache.org/jira/browse/MAPREDUCE-3713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13193437#comment-13193437
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Vinod Kumar Vavilapalli commented on MAPREDUCE-3713:
----------------------------------------------------
+1. The patch looks good.
I guess writing a test specific to the bug in question is complicated, given
the current test infrastructure. May be later.
The test failures are unrelated. I am pushing this in.
> Incorrect headroom reported to jobs
> -----------------------------------
>
> Key: MAPREDUCE-3713
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3713
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2, resourcemanager
> Affects Versions: 0.23.0
> Reporter: Siddharth Seth
> Assignee: Arun C Murthy
> Priority: Blocker
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3713.patch, MAPREDUCE-3713.patch,
> MAPREDUCE-3713.patch
>
>
> With multiple jobs submitted per user, and multiple users submitting jobs -
> the headroom reported to the AppMasters is incorrect (very high).
> Leads to a deadlock - reduces started, map tasks not complete... and reduces
> are not preempted by the AM due to the incorrect headroom.
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