[FLINK-21602] Creation of ExecutionGraph happens in main thread

• Type: Sub-task
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.13.0
• Fix Version/s: 1.13.0
• Component/s: Runtime / Coordination
• Labels: pull-request-available
• Assignee: Till Rohrmann
• Reporter: Till Rohrmann
• Created: 04/Mar/21 10:05
• Updated: 20/Mar/21 01:08
• Resolved: 20/Mar/21 01:08

Description

Currently, the AdaptiveScheduler creates the ExecutionGraph in the main thread. This also means that we are recovering state in the JobMasters's main thread. This can lead to instabilities because we are blocking the main thread for too long. I think the creation of the ExecutionGraph should happen in an ioExecutor.

Issue Links

• links to: GitHub Pull Request #15251