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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-5731) Preemption does not work in few corner cases when reservations are placed
Date Thu, 13 Oct 2016 15:07:21 GMT

     [ https://issues.apache.org/jira/browse/YARN-5731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sunil G updated YARN-5731:
--------------------------
    Summary: Preemption does not work in few corner cases when reservations are placed  (was:
Preemption does not work in few corner cases where reservations are placed)

> Preemption does not work in few corner cases when reservations are placed
> -------------------------------------------------------------------------
>
>                 Key: YARN-5731
>                 URL: https://issues.apache.org/jira/browse/YARN-5731
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacity scheduler
>    Affects Versions: 2.7.3
>            Reporter: Sunil G
>            Assignee: Sunil G
>
> Preemption doesnt kick in under below scenario.
> Two queues A and B each with 50% capacity and 100% maximum capacity and user limit factor
2. Job which is submitted to queueA has taken 95% of resources in cluster. Remaining 5% was
also reserved by same job as demand was still higher.
> Now submit a small job with AM container size is lesser to above mentioned 5%. Job waits
and no preemption is happening.



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