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From "Prasanth Jayachandran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-20202) Add profiler endpoint to HS2 and LLAP
Date Thu, 06 Sep 2018 23:32:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-20202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Prasanth Jayachandran updated HIVE-20202:
-----------------------------------------
    Attachment: HIVE-20202.7.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, HIVE-20202.4.patch,
HIVE-20202.5.patch, HIVE-20202.6.patch, HIVE-20202.7.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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