hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-6210) FS: Node reservations can interfere with preemption
Date Wed, 22 Feb 2017 19:36:44 GMT

     [ https://issues.apache.org/jira/browse/YARN-6210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Karthik Kambatla updated YARN-6210:
    Attachment: YARN-6210.4.patch

That does sound better than isStarved. v4 renames the method. 

> FS: Node reservations can interfere with preemption
> ---------------------------------------------------
>                 Key: YARN-6210
>                 URL: https://issues.apache.org/jira/browse/YARN-6210
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.9.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>         Attachments: YARN-6210.1.patch, YARN-6210.2.patch, YARN-6210.3.patch, YARN-6210.4.patch
> Today, on a saturated cluster, apps with pending demand reserve nodes. A new app might
not be able to preempt resources because these nodes are already reserved. This can be reproduced
by the example in YARN-6151. 
> Since node reservations are to prevent starvation of apps requesting large containers,
triggering these reservations only on starved applications would avoid this situation. 

This message was sent by Atlassian JIRA

To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-issues-help@hadoop.apache.org

View raw message