Peter Vary created HIVE-14979:

             Summary: Removing stale Zookeeper locks at HiveServer2 
                 Key: HIVE-14979
             Project: Hive
          Issue Type: Improvement
          Components: Locking
            Reporter: Peter Vary
            Assignee: Peter Vary

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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