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https://issues.apache.org/jira/browse/HIVE-20202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prasanth Jayachandran updated HIVE-20202:
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Attachment: HIVE-20202.3.patch
> Add profiler endpoint to HS2 and LLAP
> -------------------------------------
>
> Key: HIVE-20202
> URL: https://issues.apache.org/jira/browse/HIVE-20202
> Project: Hive
> Issue Type: New Feature
> Affects Versions: 4.0.0, 3.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Priority: Major
> Attachments: HIVE-20202.1.patch, HIVE-20202.2.patch,
> HIVE-20202.3.patch
>
>
> Add a web endpoint for profiling based on async-profiler. This servlet should
> be added to httpserver so that HS2 and LLAP daemons can output flamegraphs
> when their /prof endpoint is hit. Since this will be based on
> [https://github.com/jvm-profiling-tools/async-profiler] heap allocation, lock
> contentions, HW counters etc. will also be supported in addition to cpu
> profiling. In most cases the profiling overhead is pretty low and is safe to
> run on production. More analysis on CPU and memory overhead here
> [https://github.com/jvm-profiling-tools/async-profiler/issues/14] and
> [https://github.com/jvm-profiling-tools/async-profiler/issues/131]
>
> For the impatient, here is the usage doc and the sample output
> [https://github.com/prasanthj/nightswatch/blob/master/README.md]
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