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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4752) FairScheduler should preempt for a ResourceRequest and all preempted containers should be on the same node
Date Wed, 25 Jan 2017 18:53:26 GMT

     [ https://issues.apache.org/jira/browse/YARN-4752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Karthik Kambatla updated YARN-4752:
-----------------------------------
    Attachment: yarn-6076-branch-2.1.patch

Attaching the branch-2 patch that was committed, Jenkins run on YARN-6076.

> FairScheduler should preempt for a ResourceRequest and all preempted containers should
be on the same node
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-4752
>                 URL: https://issues.apache.org/jira/browse/YARN-4752
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.8.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>             Fix For: 2.9.0, 3.0.0-alpha2
>
>         Attachments: yarn-4752-1.patch, yarn-4752.2.patch, yarn-4752.3.patch, yarn-4752.4.patch,
yarn-4752.4.patch, YARN-4752.FairSchedulerPreemptionOverhaul.pdf, yarn-6076-branch-2.1.patch
>
>
> A number of issues have been reported with respect to preemption in FairScheduler along
the lines of:
> # FairScheduler preempts resources from nodes even if the resultant free resources cannot
fit the incoming request.
> # Preemption doesn't preempt from sibling queues
> # Preemption doesn't preempt from sibling apps under the same queue that is over its
fairshare
> # ...
> Filing this umbrella JIRA to group all the issues together and think of a comprehensive
solution.



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