[FLINK-32265] Use default classloader in jobmanager when there are no user jars for job

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.18.0
• Fix Version/s: 1.18.0
• Component/s: Runtime / Coordination
• Labels: pull-request-available
• Assignee: Fang Yong
• Reporter: Fang Yong
• Created: 06/Jun/23 01:49
• Updated: 26/Jun/23 11:10
• Resolved: 26/Jun/23 11:10

Description

Currently job manager will create a new class loader for each flink job even it has no user jars, which may cause metaspace increasing. Flink can use system classloader for the jobs without jars.

Issue Links

• links to: GitHub Pull Request #22718