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Posted to yarn-issues@hadoop.apache.org by "Wangda Tan (JIRA)" <ji...@apache.org> on 2017/07/10 20:38:00 UTC
[jira] [Updated] (YARN-5731) Preemption does not work in few corner
cases when reservations are placed
[ https://issues.apache.org/jira/browse/YARN-5731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wangda Tan updated YARN-5731:
-----------------------------
Affects Version/s: (was: 2.7.3)
2.8.0
> 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: 2.8.0
> Reporter: Sunil G
> Assignee: Sunil G
> Attachments: YARN-5731-branch-2.8.001.patch
>
>
> 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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