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Posted to dev@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2015/02/20 13:25:11 UTC

[jira] [Commented] (HIVE-9732) [CBO] Add InsertExchangeRule for join

    [ https://issues.apache.org/jira/browse/HIVE-9732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14328864#comment-14328864 ] 

Jesus Camacho Rodriguez commented on HIVE-9732:
-----------------------------------------------

LGTM.

Maybe a note could be added to {{HiveInsertExchangeRule}} saying that once join algorithm selection is implemented in Calcite, this rule will only insert the {{Exchange}} operator if _common join_ algorithm is used.

> [CBO] Add InsertExchangeRule for join
> -------------------------------------
>
>                 Key: HIVE-9732
>                 URL: https://issues.apache.org/jira/browse/HIVE-9732
>             Project: Hive
>          Issue Type: Task
>          Components: CBO
>    Affects Versions: cbo-branch
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>         Attachments: HIVE-9732.cbo.patch
>
>
> Inserts Exchange operator on optimized calcite operator tree. This facilitate easier translation to Hive operator tree.



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