You are viewing a plain text version of this content. The canonical link for it is here.

Posted to yarn-issues@hadoop.apache.org by "Wangda Tan (JIRA)" <ji...@apache.org> on 2016/04/12 02:04:25 UTC

[jira] [Updated] (YARN-4781) Support intra-queue preemption for fairness ordering policy.

     [ https://issues.apache.org/jira/browse/YARN-4781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wangda Tan updated YARN-4781:
-----------------------------
    Issue Type: Bug  (was: Sub-task)
        Parent:     (was: YARN-3306)

> Support intra-queue preemption for fairness ordering policy.
> ------------------------------------------------------------
>
>                 Key: YARN-4781
>                 URL: https://issues.apache.org/jira/browse/YARN-4781
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: scheduler
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>
> We introduced fairness queue policy since YARN-3319, which will let large applications make progresses and not starve small applications. However, if a large application takes the queue’s resources, and containers of the large app has long lifespan, small applications could still wait for resources for long time and SLAs cannot be guaranteed.
> Instead of wait for application release resources on their own, we need to preempt resources of queue with fairness policy enabled.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)