BELUGA BEHR created HIVE-17166:
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Summary: Break Locks On Timeout
Key: HIVE-17166
URL: https://issues.apache.org/jira/browse/HIVE-17166
Project: Hive
Issue Type: New Feature
Components: HiveServer2
Affects Versions: 2.1.1, 1.2.2, 3.0.0
Reporter: BELUGA BEHR
Hive supports table and partition locks by utilizing ZooKeeper to keep track.
There are several configurations related to this, including:
{{hive.lock.sleep.between.retries}} and {{hive.lock.numretries}}.
I'd lile to propose a new boolean configuration that, when set, would alter the
behavior of a lock timeout failure. Instead of failing the query with an
error, the configuration would direct Hive to break the lock and allow the
query try to obtain a new one and proceed.
This is useful in cases where locks are leaked and erroneously left behind.
Such scenarios create permanent blocking on future queries. This break-lock
mechanism would alleviate this issue.
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