[jira] [Updated] (HIVE-7736) improve the columns stats update speed for all the partitions of a table

["pengcheng xiong (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-7736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

pengcheng xiong updated HIVE-7736:
----------------------------------

    Attachment: HIVE-7736.0.patch

> improve the columns stats update speed for all the partitions of a table
> ------------------------------------------------------------------------
>
>                 Key: HIVE-7736
>                 URL: https://issues.apache.org/jira/browse/HIVE-7736
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: pengcheng xiong
>            Assignee: pengcheng xiong
>            Priority: Minor
>         Attachments: HIVE-7736.0.patch
>
>
> The current implementation of columns stats update for all the partitions of a table takes a long time when there are thousands of partitions. 
> For example, on a given cluster, it took 600+ seconds to update all the partitions' columns stats for a table with 2 columns but 2000 partitions.
> ANALYZE TABLE src_stat_part partition (partitionId) COMPUTE STATISTICS for columns;
> We would like to improve the columns stats update speed for all the partitions of a table



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