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https://issues.apache.org/jira/browse/HIVE-11955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15003769#comment-15003769
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Jesus Camacho Rodriguez commented on HIVE-11955:
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+1, LGTM.
It makes sense to delegate the logic of choosing to the Planner, as other
planner implementation (e.g. Volcano) might decide to continue firing up rules
on both alternative plans.
> Add costing for join-groupby transpose rule
> -------------------------------------------
>
> Key: HIVE-11955
> URL: https://issues.apache.org/jira/browse/HIVE-11955
> Project: Hive
> Issue Type: Improvement
> Components: CBO, Logical Optimizer
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-11955.patch
>
>
> Currently, its config driven. It needs to be cost driven.
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