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https://issues.apache.org/jira/browse/HIVE-24070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17183898#comment-17183898
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Ramesh Kumar Thangarajan commented on HIVE-24070:
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Jira HIVE-19430 only solves the OOM issue with cleanNotificationEvents(). We
still reach OOM through cleanWriteNotificationEvents() at
[https://github.com/apache/hive/blob/master/standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java#L10429]
> ObjectStore.cleanWriteNotificationEvents OutOfMemory on large number of
> pending events
> --------------------------------------------------------------------------------------
>
> Key: HIVE-24070
> URL: https://issues.apache.org/jira/browse/HIVE-24070
> Project: Hive
> Issue Type: Bug
> Components: repl
> Affects Versions: 4.0.0
> Reporter: Ramesh Kumar Thangarajan
> Assignee: Ramesh Kumar Thangarajan
> Priority: Major
> Fix For: 4.0.0
>
>
> If there are large number of events that haven't been cleaned up for some
> reason, then ObjectStore.cleanWriteNotificationEvents() can run out of memory
> while it loads all the events to be deleted.
> It should fetch events in batches.
> Similar to https://issues.apache.org/jira/browse/HIVE-19430
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