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https://issues.apache.org/jira/browse/HIVE-20242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16556922#comment-16556922
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Gopal V commented on HIVE-20242:
--------------------------------
LGTM - +1
This cut the number of queries slipping through the compile->pending window by
4x - right now queries which are arriving after 100ms of the 1st query are all
getting the pending entry.
> Query results cache: Improve ability of queries to use pending query results
> ----------------------------------------------------------------------------
>
> Key: HIVE-20242
> URL: https://issues.apache.org/jira/browse/HIVE-20242
> Project: Hive
> Issue Type: Sub-task
> Reporter: Jason Dere
> Assignee: Jason Dere
> Priority: Major
> Attachments: HIVE-20242.1.patch
>
>
> HIVE-19138 allowed a currently running query to wait on the pending results
> of an already running query. [~gopalv], after testing with high concurrency,
> suggested further improving this by having a way to use the switch to using
> the results cache even at the end of query compilation.
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