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https://issues.apache.org/jira/browse/HIVE-2415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13094094#comment-13094094
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He Yongqiang commented on HIVE-2415:
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@Ashutosh Chauhan, today it is doing 2 metastore calls. one is in
DDLSemanticAnalyzer, and the other is in DDLTask. Merging these 2 (check and
change) to metastore server will save one metastore call, but add more load to
metastore. Since this is only for a DDL command, it should be fine.
> 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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