[ https://issues.apache.org/jira/browse/HIVE-19813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Dai updated HIVE-19813: ------------------------------ Resolution: Fixed Hadoop Flags: Reviewed Fix Version/s: 4.0.0 3.1.0 Status: Resolved (was: Patch Available) Patch pushed to both branch-3 and master. Thanks Sergey for review! > SessionState.start don't have to be synchronized > ------------------------------------------------ > > Key: HIVE-19813 > URL: https://issues.apache.org/jira/browse/HIVE-19813 > Project: Hive > Issue Type: Bug > Reporter: Daniel Dai > Assignee: Daniel Dai > Priority: Major > Fix For: 3.1.0, 4.0.0 > > Attachments: HIVE-19813.1.patch, HIVE-19813.2.patch, > HIVE-19813.3.patch > > > This is introduced in HIVE-14690. However, only check-set block needs to be > synchronized, not the whole block. The method will start Tez AM, which is a > long operation. Make the method synchronized will serialize session start > thus slow down hs2. -- This message was sent by Atlassian JIRA (v7.6.3#76005)