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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-3769) Preemption occurring unnecessarily because preemption doesn't consider user limit
Date Sat, 03 Oct 2015 22:19:27 GMT

     [ https://issues.apache.org/jira/browse/YARN-3769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Payne updated YARN-3769:
-----------------------------
    Attachment: YARN-3769-branch-2.7.002.patch
                YARN-3769-branch-2.002.patch

Thank you very much, [~leftnoteasy], for your suggestions and help reviewing this patch. I
am attaching an updated patch (version 002) for both branch-2.7 and branch-2. 

> Preemption occurring unnecessarily because preemption doesn't consider user limit
> ---------------------------------------------------------------------------------
>
>                 Key: YARN-3769
>                 URL: https://issues.apache.org/jira/browse/YARN-3769
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.6.0, 2.7.0, 2.8.0
>            Reporter: Eric Payne
>            Assignee: Eric Payne
>         Attachments: YARN-3769-branch-2.002.patch, YARN-3769-branch-2.7.002.patch, YARN-3769.001.branch-2.7.patch,
YARN-3769.001.branch-2.8.patch
>
>
> We are seeing the preemption monitor preempting containers from queue A and then seeing
the capacity scheduler giving them immediately back to queue A. This happens quite often and
causes a lot of churn.



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