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https://issues.apache.org/jira/browse/HIVE-20069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16531947#comment-16531947
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Ashutosh Chauhan commented on HIVE-20069:
-----------------------------------------

+1 
We need similar fix for semijoin reduction as well.

> Fix reoptimization in case of DPP
> ---------------------------------
>
>                 Key: HIVE-20069
>                 URL: https://issues.apache.org/jira/browse/HIVE-20069
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Planning
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>         Attachments: HIVE-20069.01.patch
>
>
> reported by [~t3rmin4t0r]
> In case dynamic partition pruning; the operator statistics became partial; to 
> only reflect the actually scanned partitions; but they are being used as an 
> information about the "full" table...which leads to the exchange of the 2 
> tables being joined...which is really unfortunate...



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