[
https://issues.apache.org/jira/browse/YARN-6210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15879433#comment-15879433
]
Karthik Kambatla commented on YARN-6210:
----------------------------------------
I got two +1s from Jenkins. [~templedf] - don't you think that is enough to get
a +1 from a committer too? :)
> 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
(v6.3.15#6346)
---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
