[FLINK-17700] The callback client of JavaGatewayServer should run in a daemon thread

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.9.0, 1.10.0
• Fix Version/s: 1.9.4, 1.10.2
• Component/s: API / Python
• Labels: pull-request-available
• Assignee: Shuiqiang Chen
• Reporter: Shuiqiang Chen
• Created: 14/May/20 15:19
• Updated: 16/Oct/20 10:36
• Resolved: 18/May/20 03:07

Description

When starting the JavaGatewayServer, a callback client would also be created and run in an ScheduleExecutorService's thread which is non-daemon by default. Thus, we need to shut down the non-daemon thread and reset a daemon thread back to the call back client.

Issue Links

• links to: GitHub Pull Request #12165
• links to: GitHub Pull Request #12166