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https://issues.apache.org/jira/browse/HIVE-2415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13094238#comment-13094238
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Ashutosh Chauhan commented on HIVE-2415:
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CPU cycles spent in doing validation is lot less then setting up a connection
and tearing it down, not to mention extra roundtrips and bytes over the
network. I don't see how it is not worse.
> disallow partition column names when doing replace columns
> ----------------------------------------------------------
>
> Key: HIVE-2415
> URL: https://issues.apache.org/jira/browse/HIVE-2415
> Project: Hive
> Issue Type: Bug
> Reporter: He Yongqiang
> Assignee: He Yongqiang
> Attachments: HIVE-2415.1.patch
>
>
> alter table replace columns allows to add a column with the same name as
> partition column, which introduced inconsistency.
> We should disallow this.
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