[FLINK-21368] Remove RpcService#getExecutor

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.14.0
• Component/s: Runtime / Coordination
• Labels: auto-deprioritized-major
• Assignee: Chesnay Schepler
• Reporter: Chesnay Schepler
• Created: 12/Feb/21 11:23
• Updated: 13/Jul/21 15:13
• Resolved: 13/Jul/21 15:13

Description

RpcService#getExecutor exposes Akka's underlying dispatcher thread which introduces the risk of the thread being blocking by an IO operation of another component.

We should look into removing this method, and migrate existing usages to either a dedicated executor or explicitly passing the main thread executor if required.

Issue Links

• supercedes: FLINK-17024 Make AkkaRpcService#getExecutor return a custom thread pool