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https://issues.apache.org/jira/browse/HIVE-10506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14531870#comment-14531870
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Laljo John Pullokkaran commented on HIVE-10506:
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Committed to trunk, branch-1.2.
> CBO (Calcite Return Path): Disallow return path to be enable if CBO is off
> --------------------------------------------------------------------------
>
> Key: HIVE-10506
> URL: https://issues.apache.org/jira/browse/HIVE-10506
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Fix For: 1.2.0
>
> Attachments: HIVE-10506.01.patch, HIVE-10506.patch
>
>
> If hive.cbo.enable=false and hive.cbo.returnpath=true then some optimizations
> would kick in. It's quite possible that in customer environment, they might
> end up in these scenarios; we should prevent it.
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