[jira] [Commented] (HIVE-3672) Support altering partition column type in Hive

["Namit Jain (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-3672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13561538#comment-13561538 ] 

Namit Jain commented on HIVE-3672:
----------------------------------

[~jingweilu], is it ready for review ?
Please refresh, and mark 'Submit Patch' if it is ready for review ?
                
> 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
>         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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