Lefty Leverenz commented on HIVE-14979:

I left some suggestions on the review board.

> Removing stale Zookeeper locks at HiveServer2 initialization
> ------------------------------------------------------------
>                 Key: HIVE-14979
>                 URL: https://issues.apache.org/jira/browse/HIVE-14979
>             Project: Hive
>          Issue Type: Improvement
>          Components: Locking
>            Reporter: Peter Vary
>            Assignee: Peter Vary
>         Attachments: HIVE-14979.patch
> HiveServer2 could use Zookeeper to store token that indicate that particular 
> tables are locked with the creation of persistent Zookeeper objects. 
> A problem can occur when a HiveServer2 instance creates a lock on a table and 
> the HiveServer2 instances crashes ("Out of Memory" for example) and the locks 
> are not released in Zookeeper. This lock will then remain until it is 
> manually cleared by an admin.
> There should be a way to remove stale locks at HiveServer2 initialization, 
> helping the admins life.

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