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https://issues.apache.org/jira/browse/HIVE-14590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15431276#comment-15431276
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Jesus Camacho Rodriguez commented on HIVE-14590:
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Could you give me a bit of context on this (why it should be disabled if there
is a limit below the union)? Shouldn't we actually check the value of that
limit to know whether it is greater or less?
> CBO (Calcite Return Path) Incorrect result set when limit is present in one
> of the union branches
> -------------------------------------------------------------------------------------------------
>
> Key: HIVE-14590
> URL: https://issues.apache.org/jira/browse/HIVE-14590
> Project: Hive
> Issue Type: Sub-task
> Components: Logical Optimizer
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-14590.patch
>
>
> Limit gets propagated outside union.
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