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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-8061) improve the speed of col stats update speed
Date Thu, 11 Sep 2014 21:00:33 GMT
Pengcheng Xiong created HIVE-8061:
-------------------------------------

             Summary: improve the speed of 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


We worked hard towards faster update stats for columns of a partition of a table previously
https://issues.apache.org/jira/browse/HIVE-7736
and https://issues.apache.org/jira/browse/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 https://issues.apache.org/jira/browse/HIVE-7944 by reversing the patch.

This JIRA ticket is my another try to improve the speed.



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