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https://issues.apache.org/jira/browse/HIVE-15118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15743444#comment-15743444
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Naveen Gangam commented on HIVE-15118:
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[~ychena] It was done it {{008-HIVE-2246.derby.sql}} file. There is a
{{008-REVERT-HIVE-2246.derby.sql}} script that reverts this change where the
rename occurs, but it never gets called from any of the real upgrade scripts.
So I assume it was meant for folks who wanted to manually revert the change
> Remove unused 'COLUMNS' table from derby schema
> -----------------------------------------------
>
> Key: HIVE-15118
> URL: https://issues.apache.org/jira/browse/HIVE-15118
> Project: Hive
> Issue Type: Sub-task
> Components: Database/Schema
> Affects Versions: 2.2.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Priority: Minor
> Attachments: HIVE-15118.1.patch, HIVE-15118.2.patch,
> HIVE-15118.3.patch
>
>
> COLUMNS table is unused any more. Other databases already removed it. Remove
> from derby as well.
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