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https://issues.apache.org/jira/browse/HIVE-6734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13945853#comment-13945853
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Alan Gates commented on HIVE-6734:
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[~rhbutani] This needs to be in 0.13 as well.
> DDL locking too course grained in new db txn manager
> ----------------------------------------------------
>
> Key: HIVE-6734
> URL: https://issues.apache.org/jira/browse/HIVE-6734
> Project: Hive
> Issue Type: Bug
> Components: Locking
> Affects Versions: 0.13.0
> Reporter: Alan Gates
> Assignee: Alan Gates
> Fix For: 0.13.0
>
>
> All DDL operations currently acquire an exclusive lock. This is too course
> grained, as some operations like alter table add partition shouldn't get an
> exclusive lock on the entire table.
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