[jira] [Commented] (HIVE-7241) Wrong lock acquired for alter table rename partition

["Alan Gates (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-7241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14189350#comment-14189350 ] 

Alan Gates commented on HIVE-7241:
----------------------------------

The list of locks there just covers the older ZK and memory lock models.  The locks for DbLockMgr are completely different.  They are covered briefly in https://cwiki.apache.org/confluence/display/Hive/Hive+Transactions#HiveTransactions-LockManager but not listed individually, so there's no need to add this change in the documentation.

> Wrong lock acquired for alter table rename partition
> ----------------------------------------------------
>
>                 Key: HIVE-7241
>                 URL: https://issues.apache.org/jira/browse/HIVE-7241
>             Project: Hive
>          Issue Type: Bug
>          Components: Locking
>    Affects Versions: 0.13.0
>            Reporter: Alan Gates
>            Assignee: Alan Gates
>             Fix For: 0.14.0
>
>         Attachments: HIVE-7241.patch, HIVE-7241.patch
>
>
> Doing an "alter table foo partition (bar='x') rename to partition (bar='y')" acquires a read lock on table foo.  It should instead acquire an exclusive lock on partition bar=x.



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