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Posted to yarn-issues@hadoop.apache.org by "Varun Saxena (JIRA)" <ji...@apache.org> on 2015/04/15 16:23:59 UTC

[jira] [Assigned] (YARN-3489) RMServerUtils.validateResourceRequests should only obtain queue info once

     [ https://issues.apache.org/jira/browse/YARN-3489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Varun Saxena reassigned YARN-3489:
----------------------------------

    Assignee: Varun Saxena

> RMServerUtils.validateResourceRequests should only obtain queue info once
> -------------------------------------------------------------------------
>
>                 Key: YARN-3489
>                 URL: https://issues.apache.org/jira/browse/YARN-3489
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Jason Lowe
>            Assignee: Varun Saxena
>
> Since the label support was added we now get the queue info for each request being validated in SchedulerUtils.validateResourceRequest.  If validateResourceRequests needs to validate a lot of requests at a time (e.g.: large cluster with lots of varied locality in the requests) then it will get the queue info for each request.  Since we build the queue info this generates a lot of unnecessary garbage, as the queue isn't changing between requests.  We should grab the queue info once and pass it down rather than building it again for each request.



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