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From "yunjiong zhao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-6339) Improve performance for createAndGetApplicationReport
Date Tue, 14 Mar 2017 23:04:41 GMT
yunjiong zhao created YARN-6339:
-----------------------------------

             Summary: Improve performance for createAndGetApplicationReport
                 Key: YARN-6339
                 URL: https://issues.apache.org/jira/browse/YARN-6339
             Project: Hadoop YARN
          Issue Type: Improvement
            Reporter: yunjiong zhao
            Assignee: yunjiong zhao


There are two performance issue when calling createAndGetApplicationReport:
One is inside ProtoUtils.convertFromProtoFormat, replace is too slow for clusters which have
more than 3000 nodes. Use substring is much better: https://issues.apache.org/jira/browse/YARN-6285?focusedCommentId=15923241&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15923241

Another one is inside getLogAggregationReportsForApp, if some application's LogAggregationStatus
is TIME_OUT, every time it was called it will create an HashMap which will produce lots of
garbage.




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