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https://issues.apache.org/jira/browse/HIVE-11160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pengcheng Xiong updated HIVE-11160:
-----------------------------------
Description: 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.
(was: 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.)
> 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 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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