[
https://issues.apache.org/jira/browse/HIVE-20202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16551599#comment-16551599
]
Prasanth Jayachandran commented on HIVE-20202:
----------------------------------------------
[~gopalv] tried refresh svg method but that still fails sometimes (after
refresh the svg is complete, partial or empty). Added new servlet that adds
refresh header if output file length <100 bytes which seems to work reliably
well..
> 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, HIVE-20202.4.patch, HIVE-20202.5.patch, HIVE-20202.6.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]
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
