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https://issues.apache.org/jira/browse/HIVE-11267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14629080#comment-14629080
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Xuefu Zhang commented on HIVE-11267:
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That's fine. I think we can leave this for now and revisit in the future. Thank
you for your research.
> Combine equavilent leaf works in SparkWork[Spark Branch]
> --------------------------------------------------------
>
> Key: HIVE-11267
> URL: https://issues.apache.org/jira/browse/HIVE-11267
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Reporter: Chengxiang Li
> Assignee: Chengxiang Li
> Priority: Minor
>
> There could be multi leaf works in SparkWork, like self-union query. If the
> subqueries are same with each other, we may combine the subqueries, and just
> execute once, then fetch twice in FetchTask.
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