[FLINK-19037] Introduce proper IO executor in Dispatcher

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.12.0
• Fix Version/s: 1.12.0
• Component/s: Runtime / Coordination
• Labels: pull-request-available
• Assignee: Robert Metzger
• Reporter: Robert Metzger
• Created: 24/Aug/20 11:47
• Updated: 15/Sep/20 11:23
• Resolved: 15/Sep/20 11:23

Description

Currently, IO operations in the Dispatcher are scheduled on the rpcService.getExecutor().

We should introduce a separate executor for IO operations.

Issue Links

• is related to: FLINK-16866 Make job submission non-blocking
• links to: GitHub Pull Request #13390