Slim Bouguerra created HIVE-22492: ------------------------------------- Summary: Amortize lock contention due to LRFU accounting Key: HIVE-22492 URL: https://issues.apache.org/jira/browse/HIVE-22492 Project: Hive Issue Type: Improvement Reporter: Slim Bouguerra Assignee: Slim Bouguerra
LRFU eviction policy can be a major source of contention under high load. This can be see on the following profiles. To fix this the idea is to use a batching wrapper to amortize the locking contention. The trick i a common way to amortize locking as explained here http://www.ece.eng.wayne.edu/~sjiang/pubs/papers/ding-09-BP-Wrapper.pdf -- This message was sent by Atlassian Jira (v8.3.4#803005)