Peter Vary created HIVE-14979:
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Summary: 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
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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