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https://issues.apache.org/jira/browse/HIVE-24590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17259857#comment-17259857
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Stamatis Zampetakis commented on HIVE-24590:
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The appender/files are created and closed based on the queryId. This queryId is
in the log4j context (usually in ThreadLocal variables) and can be present in
various threads. I suspect that the thread local is cleared on some threads but
not on others. If you are tracking the creation of the appenders you can see if
the same appender is created twice.
> Operation Logging still leaks the log4j Appenders
> -------------------------------------------------
>
> Key: HIVE-24590
> URL: https://issues.apache.org/jira/browse/HIVE-24590
> Project: Hive
> Issue Type: Bug
> Components: Logging
> Reporter: Eugene Chung
> Assignee: Stamatis Zampetakis
> Priority: Major
> Attachments: Screen Shot 2021-01-06 at 18.42.05.png, Screen Shot
> 2021-01-06 at 18.42.24.png, Screen Shot 2021-01-06 at 18.42.55.png, Screen
> Shot 2021-01-06 at 21.38.32.png, Screen Shot 2021-01-06 at 21.47.28.png,
> add_debug_log_and_trace.patch
>
>
> I'm using Hive 3.1.2 with options below.
> * hive.server2.logging.operation.enabled=true
> * hive.server2.logging.operation.level=VERBOSE
> * hive.async.log.enabled=false
> I already know the ticket, https://issues.apache.org/jira/browse/HIVE-17128
> but HS2 still leaks log4j RandomAccessFileManager.
> !Screen Shot 2021-01-06 at 18.42.05.png|width=756,height=197!
> I checked the operation log file which is not closed/deleted properly.
> !Screen Shot 2021-01-06 at 18.42.24.png|width=603,height=272!
> Then there's the log,
> {code:java}
> client.TezClient: Shutting down Tez Session, sessionName= ....{code}
> !Screen Shot 2021-01-06 at 18.42.55.png|width=1372,height=26!
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