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https://issues.apache.org/jira/browse/HIVE-13087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15153211#comment-15153211
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Gopal V commented on HIVE-13087:
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+1 - LGTM.
> LLAP: Print STW pause time and useful application time
> ------------------------------------------------------
>
> Key: HIVE-13087
> URL: https://issues.apache.org/jira/browse/HIVE-13087
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.1.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-13087.1.patch
>
>
> The daemons currently prints GC details. It will be useful to print the total
> useful time application spent and the total time for which application
> threads are stopped.
> Need to add
> {code}
> -XX:+PrintGCApplicationStoppedTime -XX:+PrintGCApplicationConcurrentTime
> {code}
> to get something like
> {code}
> Application time: 0.3440086 seconds
> Total time for which application threads were stopped: 0.0620105 seconds
> Application time: 0.2100691 seconds
> Total time for which application threads were stopped: 0.0890223 seconds
> {code}
> Reference:
> https://plumbr.eu/blog/performance-blog/logging-stop-the-world-pauses-in-jvm
> NO PRECOMMIT TESTS
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