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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-13616) Investigate renaming a table without invalidating the column stats
Date Sat, 21 May 2016 16:09:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-13616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15295102#comment-15295102
] 

Aihua Xu commented on HIVE-13616:
---------------------------------

[~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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