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From "Zoltan Haindrich (JIRA)" <>
Subject [jira] [Updated] (HIVE-11160) Auto-gather column stats
Date Tue, 19 Dec 2017 10:22:00 GMT


Zoltan Haindrich updated HIVE-11160:
    Component/s: Statistics

> Auto-gather column stats
> ------------------------
>                 Key: HIVE-11160
>                 URL:
>             Project: Hive
>          Issue Type: New Feature
>          Components: Statistics
>            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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