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Posted to dev@hive.apache.org by "Pengcheng Xiong (JIRA)" <ji...@apache.org> on 2014/09/12 01:34:33 UTC

[jira] [Updated] (HIVE-8061) improve the partition col stats update speed

     [ https://issues.apache.org/jira/browse/HIVE-8061?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pengcheng Xiong updated HIVE-8061:
----------------------------------
    Summary: improve the partition col stats update speed  (was: improve the speed of col stats update speed)

> improve the partition col stats update speed
> --------------------------------------------
>
>                 Key: HIVE-8061
>                 URL: https://issues.apache.org/jira/browse/HIVE-8061
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>            Priority: Minor
>         Attachments: HIVE-8061.1.patch
>
>
> We worked hard towards faster update stats for columns of a partition of a table previously HIVE-7736
> and HIVE-7876
> Although there is some improvement, it is only correct in the first run. There will be duplicate column stats later. Thanks to Eugene Koifman 's comments.
> We fixed this in HIVE-7944 by reversing the patch.
> This JIRA ticket is my another try to improve the speed.



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