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https://issues.apache.org/jira/browse/HIVE-11515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14706694#comment-14706694
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Navis commented on HIVE-11515:
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[~sseth] Sorry for delay.
I've seen this a month ago in PoC scenario sometimes and desperately made this
patch in a hurry. After applying it, those things gone and I just forget it
(there was so many issues). So I cannot remember what was the exact problem,
but it seemed "query hang" situation I guess. Sorry for my vague description.
> Still some possible race condition in DynamicPartitionPruner
> ------------------------------------------------------------
>
> Key: HIVE-11515
> URL: https://issues.apache.org/jira/browse/HIVE-11515
> Project: Hive
> Issue Type: Bug
> Components: Query Processor, Tez
> Reporter: Navis
> Assignee: Navis
> Priority: Minor
> Attachments: HIVE-11515.1.patch.txt
>
>
> Even after HIVE-9976, I could see race condition in DPP sometimes. Hard to
> reproduce but it seemed related to the fact that prune() is called by
> thread-pool. With some delay in queue, events from fast tasks are arrived
> before prune() is called.
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