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https://issues.apache.org/jira/browse/HIVE-13616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15295102#comment-15295102
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Aihua Xu commented on HIVE-13616:
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[~leftylev] Seems we didn't update the wiki for HIVE-9720 and it's more like
internal implementation, so I think we don't need to document this.
> Investigate renaming a table without invalidating the column stats
> ------------------------------------------------------------------
>
> Key: HIVE-13616
> URL: https://issues.apache.org/jira/browse/HIVE-13616
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Fix For: 2.1.0
>
> Attachments: HIVE-13616.1.patch, HIVE-13616.2.patch
>
>
> Right now when we rename a table, we clear the column stats rather than
> updating it (HIVE-9720) since ObjectStore uses DN to talk to DB. Investigate
> the possibility that if we can achieve updating the stats without rescanning
> the whole table.
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