[
https://issues.apache.org/jira/browse/HIVE-11387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14651795#comment-14651795
]
Jesus Camacho Rodriguez commented on HIVE-11387:
------------------------------------------------
+1
[~pxiong], this doesn't seem exclusive of the return path, right? Should we
move it outside of the CBO return path umbrella? Thanks
> CBO: Calcite Operator To Hive Operator (Calcite Return Path) : fix
> reduce_deduplicate optimization
> --------------------------------------------------------------------------------------------------
>
> Key: HIVE-11387
> URL: https://issues.apache.org/jira/browse/HIVE-11387
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Attachments: HIVE-11387.01.patch, HIVE-11387.02.patch,
> HIVE-11387.03.patch, HIVE-11387.04.patch
>
>
> {noformat}
> The main problem is that, due to return path, now we may have
> (RS1-GBY2)-(RS3-GBY4) when map.aggr=false, i.e., no map aggr. However, in the
> non-return path, it will be treated as (RS1)-(GBY2-RS3-GBY4). The main
> problem is that it does not take into account of the setting.
> {noformat}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
