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https://issues.apache.org/jira/browse/HIVE-21145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16754932#comment-16754932
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Zoltan Haindrich commented on HIVE-21145:
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#01) wip patch; see if it break anything..
> Enable cbo to use runtime statistics during re-optimization
> -----------------------------------------------------------
>
> Key: HIVE-21145
> URL: https://issues.apache.org/jira/browse/HIVE-21145
> Project: Hive
> Issue Type: Improvement
> Components: CBO, Statistics
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
> Attachments: HIVE-21145.01.patch
>
>
> This could enable to reorder joins according to runtime rowcounts.
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