Ashutosh Chauhan created HIVE-22697:
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Summary: Remove expensive RDBMS queries in lock acquisition logic
Key: HIVE-22697
URL: https://issues.apache.org/jira/browse/HIVE-22697
Project: Hive
Issue Type: Improvement
Components: Transactions
Reporter: Gopal Vijayaraghavan
There are queries like
"update NEXT_LOCK_ID set nl_next = 163084841;" which can be entirely skipped
the ACID impl doesn't require globally unique lock ids
because locks are marked as txn.id
In a particular instance we observed this logic taking multiple seconds in mysql
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