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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-3937) Introducing REMOVE_CONTAINER_FROM_PREEMPTION event to notify Scheduler and AM when a container is no longer to be preempted
Date Sun, 02 Aug 2015 09:37:05 GMT

     [ https://issues.apache.org/jira/browse/YARN-3937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sunil G updated YARN-3937:
--------------------------
    Attachment: 0002-YARN-3937.patch

Rebasing the patch against latest trunk.

> Introducing REMOVE_CONTAINER_FROM_PREEMPTION event to notify Scheduler and AM when a
container is no longer to be preempted
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-3937
>                 URL: https://issues.apache.org/jira/browse/YARN-3937
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler
>    Affects Versions: 2.7.1
>            Reporter: Sunil G
>            Assignee: Sunil G
>         Attachments: 0001-YARN-3937.patch, 0002-YARN-3937.patch
>
>
> As discussed in YARN-3784, there are scenarios like few other applications released containers
or same application has revoked its resource requests. In these cases, we may not have to
preempt a container which would have been marked for preemption earlier. 
> Introduce a new event to remove such containers if present in the to-be-preempted list
of scheduler or inform AM about such a scenario.



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