Prasanth Jayachandran created HIVE-20202:
--------------------------------------------
Summary: Add profiler endpoint to httpserver
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
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)
