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https://issues.apache.org/jira/browse/HIVE-11152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14636039#comment-14636039
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Jason Dere commented on HIVE-11152:
-----------------------------------
FYI, this was listed as being fixed on 1.2.2, but I do not see any such commit
on either branch-1 or branch-1.2.
> Swapping join inputs in ASTConverter
> ------------------------------------
>
> Key: HIVE-11152
> URL: https://issues.apache.org/jira/browse/HIVE-11152
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Fix For: 2.0.0
>
> Attachments: HIVE-11152.02.patch, HIVE-11152.patch
>
>
> We want that multijoin optimization in SemanticAnalyzer always kicks in when
> CBO is enabled (if possible). For that, we may need to swap the join inputs
> when we return from CBO through the Hive AST.
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