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https://issues.apache.org/jira/browse/HIVE-21622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajesh Balamohan updated HIVE-21622:
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Description:
In certain cases, UDFs would be dynamically registered/deregistered often. This
can clutter "constructor_cache" of "ReflectionUtil" and cause memory pressure.
It would be good to provide an option to invoke ReflectionUtil without hitting
constructor cache.
Attached profiler image has the details.
was:
In certain cases, UDFs would be dynamically registered/deregistered often. This
can clutter "constructor_cache" of "ReflectionUtil" and cause memory pressure.
!Screenshot 2019-04-17 at 2.17.21 PM.png!
It would be good to provide an option to invoke ReflectionUtil without hitting
constructor cache.
> Provide an option to invoke `ReflectionUtil::newInstance` without storing in
> constructor_cache
> ----------------------------------------------------------------------------------------------
>
> Key: HIVE-21622
> URL: https://issues.apache.org/jira/browse/HIVE-21622
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Reporter: Rajesh Balamohan
> Priority: Trivial
> Attachments: Screenshot 2019-04-17 at 2.17.21 PM.png
>
>
> In certain cases, UDFs would be dynamically registered/deregistered often.
> This can clutter "constructor_cache" of "ReflectionUtil" and cause memory
> pressure.
>
> It would be good to provide an option to invoke ReflectionUtil without
> hitting constructor cache.
> Attached profiler image has the details.
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