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https://issues.apache.org/jira/browse/HIVE-3672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jingwei Lu updated HIVE-3672:
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Attachment: HIVE-3672.2.patch.txt
New patch fixed according to comments.
> Support altering partition column type in Hive
> ----------------------------------------------
>
> Key: HIVE-3672
> URL: https://issues.apache.org/jira/browse/HIVE-3672
> Project: Hive
> Issue Type: Improvement
> Components: CLI, SQL
> Affects Versions: 0.10.0
> Reporter: Jingwei Lu
> Assignee: Jingwei Lu
> Fix For: 0.10.0
>
> Attachments: HIVE-3672.1.patch.txt, HIVE-3672.2.patch.txt
>
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> Currently, Hive does not allow altering partition column types. As we've
> discouraged users from using non-string partition column types, this presents
> a problem for users who want to change there partition columns to be strings,
> they have to rename their table, create a new table, and copy all the data
> over.
> To support this via the CLI, adding a command like ALTER TABLE <table_name>
> PARTITION COLUMN (<column_name> <new type>);
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