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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6808) Allow Schedulers to return OPPORTUNISTIC containers when queues go over configured capacity
Date Thu, 13 Jul 2017 00:26:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16084963#comment-16084963
] 

Wangda Tan commented on YARN-6808:
----------------------------------

[~asuresh], I just tried to read the patch, however I didn't get what is the workflow of the
patch, could you include more contexts about how this patch interact with other scheduler
component and which feature will use the patch (such as overcommit, etc.)

> Allow Schedulers to return OPPORTUNISTIC containers when queues go over configured capacity
> -------------------------------------------------------------------------------------------
>
>                 Key: YARN-6808
>                 URL: https://issues.apache.org/jira/browse/YARN-6808
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: YARN-6808.001.patch
>
>
> This is based on discussions with [~kasha] and [~kkaranasos].
> Currently, when a Queues goes over capacity, apps on starved queues must wait either
for containers to complete or for them to be pre-empted by the scheduler to get resources.
> This JIRA proposes to allow Schedulers to:
> # Allocate all containers over the configured queue capacity/weight as OPPORTUNISTIC.
> # Auto-promote running OPPORTUNISTIC containers of apps as and when their GUARANTEED
containers complete.



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