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Posted to yarn-issues@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2015/04/15 16:18:59 UTC

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

Jason Lowe created YARN-3489:
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             Summary: 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


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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