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https://issues.apache.org/jira/browse/HIVE-9060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242149#comment-14242149
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Szehon Ho commented on HIVE-9060:
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Sorry I missed that, that would be good thanks.
> Fix child operator references after NonBlockingOpDeDupProc
> ----------------------------------------------------------
>
> Key: HIVE-9060
> URL: https://issues.apache.org/jira/browse/HIVE-9060
> Project: Hive
> Issue Type: Bug
> Reporter: Szehon Ho
> Assignee: Szehon Ho
> Attachments: HIVE-9060.2.patch, HIVE-9060.patch
>
>
> The optimizer proc called 'NonBlockingOpDeDupProc' combines Sel-Sel or
> Fil-Fil into a single operator. However, some references to the old
> (removed) child still remain in the optimizer context, and mess up further
> optimizer procs.
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