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https://issues.apache.org/jira/browse/HIVE-24860?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karen Coppage updated HIVE-24860:
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Description:
### What changes were proposed in this pull request?
Shut down HeartbeatExecutorService at session close.
### Why are the changes needed?
If the HeartBeaterExecutorService isn't shut down, UDF classes belonging to the
session's UDFClassLoader (which was the session thread's context classloader at
HeartBeaterExecutorService creation) could pile up and cause Metaspace OOM.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Manually
> DbTxnManager$HeartbeaterThread thread leak
> ------------------------------------------
>
> Key: HIVE-24860
> URL: https://issues.apache.org/jira/browse/HIVE-24860
> Project: Hive
> Issue Type: Bug
> Reporter: Karen Coppage
> Assignee: Karen Coppage
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> ### What changes were proposed in this pull request?
> Shut down HeartbeatExecutorService at session close.
> ### Why are the changes needed?
> If the HeartBeaterExecutorService isn't shut down, UDF classes belonging to
> the session's UDFClassLoader (which was the session thread's context
> classloader at HeartBeaterExecutorService creation) could pile up and cause
> Metaspace OOM.
> ### Does this PR introduce _any_ user-facing change?
> No
> ### How was this patch tested?
> Manually
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