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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2014/08/22 17:38:11 UTC
[jira] [Commented] (YARN-2393) FairScheduler: Implement steady fair
share
[ https://issues.apache.org/jira/browse/YARN-2393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14106990#comment-14106990 ]
Karthik Kambatla commented on YARN-2393:
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One of the reasons we (Sandy and I) wanted to make the fairshare being used for scheduling instantaneous was to address the case where the maxAMResource becomes so small when there are multiple queues that we can't run any applications at all. I think it is better to leave it as is. In case any one runs into (in testing) issues with maxAMResource, we can consider preempting AMs as an alternative.
> FairScheduler: Implement steady fair share
> ------------------------------------------
>
> Key: YARN-2393
> URL: https://issues.apache.org/jira/browse/YARN-2393
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Reporter: Ashwin Shankar
> Assignee: Wei Yan
> Attachments: YARN-2393-1.patch, YARN-2393-2.patch, YARN-2393-3.patch, yarn-2393-4.patch
>
>
> Static fair share is a fair share allocation considering all(active/inactive) queues.It would be shown on the UI for better predictability of finish time of applications.
> We would compute static fair share only when needed, like on queue creation, node added/removed. Please see YARN-2026 for discussions on this.
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