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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2015/06/30 23:04:05 UTC

[jira] [Updated] (HIVE-11152) Swapping join inputs in ASTConverter

     [ https://issues.apache.org/jira/browse/HIVE-11152?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez updated HIVE-11152:
-------------------------------------------
    Attachment: HIVE-11152.patch

> 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.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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