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https://issues.apache.org/jira/browse/HIVE-11530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15038775#comment-15038775
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Jesus Camacho Rodriguez commented on HIVE-11530:
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We have enabled CBO path even when stats are not present for Hive-2.0.0. Thus,
now that HIVE-11684 went in, I think there is no need to implement the same
rule in the non-CBO path, unless somebody feels the urge to do it.
> push limit thru outer join
> --------------------------
>
> Key: HIVE-11530
> URL: https://issues.apache.org/jira/browse/HIVE-11530
> Project: Hive
> Issue Type: Improvement
> Components: Logical Optimizer
> Reporter: Sergey Shelukhin
> Assignee: Yohei Abe
>
> When the query has a left or right outer join with limit, we can push the
> limit into the left/right side of the join.
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