[HIVE-23208] Update guaranteed capacity in ZK only when WM is enabled

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-1
• Component/s: llap
• Assignee: Ramesh Kumar Thangarajan
• Reporter: Rajesh Balamohan
• Created: 15/Apr/20 04:24
• Updated: 17/Nov/22 08:51
• Resolved: 16/Apr/20 15:39

Description

https://github.com/apache/hive/blob/master/llap-tez/src/java/org/apache/hadoop/hive/llap/tezplugins/LlapTaskSchedulerService.java#L1091

 

Though WM is not enabled, it ends up updating ZK for every dag completion event. For short running queries with concurrency, this ends up with lots of calls to ZK.

It would be good to invoke this only when WM is enabled.