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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:
-----------------------------------
Attachment: HIVE-11160.07.patch
> 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 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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