BELUGA BEHR created HIVE-20797: ---------------------------------- Summary: Print Number of Locks Acquired Key: HIVE-20797 URL: https://issues.apache.org/jira/browse/HIVE-20797 Project: Hive Issue Type: Improvement Components: HiveServer2, Locking Affects Versions: 4.0.0 Reporter: BELUGA BEHR
The number of locks acquired by a query can greatly influence the performance and stability of the system, especially for ZK locks. Please add INFO level logging with the number of locks each query obtains. Log here: https://github.com/apache/hive/blob/3963c729fabf90009cb67d277d40fe5913936358/ql/src/java/org/apache/hadoop/hive/ql/Driver.java#L1670-L1672 {quote} A list of acquired locks will be stored in the org.apache.hadoop.hive.ql.Context object and can be retrieved via org.apache.hadoop.hive.ql.Context#getHiveLocks. {quote} https://github.com/apache/hive/blob/758ff449099065a84c46d63f9418201c8a6731b1/ql/src/java/org/apache/hadoop/hive/ql/lockmgr/HiveTxnManager.java#L115-L127 -- This message was sent by Atlassian JIRA (v7.6.3#76005)