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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11160) Auto-gather column stats
Date Mon, 17 Apr 2017 22:12:41 GMT

     [ https://issues.apache.org/jira/browse/HIVE-11160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pengcheng Xiong updated HIVE-11160:
-----------------------------------
    Status: Patch Available  (was: Open)

> Auto-gather column stats
> ------------------------
>
>                 Key: HIVE-11160
>                 URL: https://issues.apache.org/jira/browse/HIVE-11160
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-11160.01.patch, HIVE-11160.02.patch, HIVE-11160.03.patch, HIVE-11160.04.patch,
HIVE-11160.05.patch, HIVE-11160.06.patch, HIVE-11160.07.patch, HIVE-11160.08.patch, HIVE-11160.09.patch
>
>
> Hive will collect table stats when set hive.stats.autogather=true during the INSERT OVERWRITE
command. And then the users need to collect the column stats themselves using "Analyze" command.
In this patch, the column stats will also be collected automatically. More specifically, INSERT
OVERWRITE will automatically create new column stats. INSERT INTO will automatically merge
new column stats with existing ones.



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