Janos Kovacs created HIVE-26143: ----------------------------------- Summary: Performance enhancements for highly concurrent use-cases Key: HIVE-26143 URL: https://issues.apache.org/jira/browse/HIVE-26143 Project: Hive Issue Type: Improvement Components: Metastore Reporter: Janos Kovacs Assignee: Janos Kovacs
These changes are from a recent high-concurrency test-run with - 4x HS2 (each with dedicated HMS instances), each with up to 2k sessions - 1x HS2 (with dedicated HMS instance) for housekeeping (~all background tasks) The tests brought two issues to the surface: - missing indexes caused long running queries in the backend database (with table scans) which then lead to query locks - the notification log cleaners can't be configured to a single node -- This message was sent by Atlassian Jira (v8.20.1#820001)