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https://issues.apache.org/jira/browse/HIVE-11152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14610731#comment-14610731
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Laljo John Pullokkaran commented on HIVE-11152:
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I agree, you are correct [~jcamachorodriguez].
+1 Conditional on clean QA run.
> 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
> 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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