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https://issues.apache.org/jira/browse/HIVE-10332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14496066#comment-14496066
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Jesus Camacho Rodriguez commented on HIVE-10332:
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I have created CALCITE-681 to follow up on this issue.

> Use SortExchange rather than LogicalExchange for HiveOpConverter
> ----------------------------------------------------------------
>
>                 Key: HIVE-10332
>                 URL: https://issues.apache.org/jira/browse/HIVE-10332
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>             Fix For: cbo-branch
>
>         Attachments: HIVE-10332.01.patch
>
>
> Right now HiveSortExchange extends SortExchange extends Exchange. 
> LogicalExchange extends Exchange. LogicalExchange is expected in 
> HiveOpConverter but HiveSortExchange is created. After discussion, we plan to 
> change LogicalExchange to HiveSortExchange.



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