yunjiong zhao created YARN-6339:
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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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