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https://issues.apache.org/jira/browse/HIVE-11333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Shelukhin updated HIVE-11333:
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Should this issue be backported to branch-1? It looks like a bug.
> ColumnPruner prunes columns of UnionOperator that should be kept
> ----------------------------------------------------------------
>
> Key: HIVE-11333
> URL: https://issues.apache.org/jira/browse/HIVE-11333
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Fix For: 2.0.0
>
> Attachments: HIVE-11333.01.patch, HIVE-11333.02.patch
>
>
> unionOperator will have the schema following the operator in the first
> branch. Because ColumnPruner prunes columns based on the internal name, the
> column in other branches may be pruned due to a different internal name from
> the first branch. To repro, run rcfile_union.q with return path turned on.
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