[jira] [Updated] (YARN-6769) Make schedulables without demand less needy in FairSharePolicy#compare

["Yufei Gu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-6769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yufei Gu updated YARN-6769:
---------------------------
    Summary: Make schedulables without demand less needy in FairSharePolicy#compare  (was: Put no demand queue after the most in FairSharePolicy#compare)

> Make schedulables without demand less needy in FairSharePolicy#compare
> ----------------------------------------------------------------------
>
>                 Key: YARN-6769
>                 URL: https://issues.apache.org/jira/browse/YARN-6769
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.7.2
>            Reporter: YunFan Zhou
>            Assignee: YunFan Zhou
>            Priority: Minor
>             Fix For: 2.9.0
>
>         Attachments: YARN-6769.001.patch, YARN-6769.002.patch, YARN-6769.003.patch, YARN-6769.004.patch
>
>
> When use fairsheduler as RM scheduler, before assign container we will sort all queues or applications. 
> We will use FairSharePolicy#compare as the comparator， but the comparator is not so perfect.
> It have a problem as blow:
> 1. when a queue use resource over minShare(minResources), it will put behind the queue whose demand is zeor.
> so it will greater opportunity to get the resource although it do not want. It will waste schedule time when assign container
> to queue or application.
> I have fix it, and I will upload the patch to the jira.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

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