[BEAM-11401] StreamingDataflowWorker ReaderCache performs blocking close of readers on possibly important threads

• Type: Bug
• Status: Resolved
• Priority: P2
• Resolution: Fixed
• Fix Version/s: 2.27.0
• Component/s: runner-dataflow
• Assignee: Sam Whittle
• Reporter: Sam Whittle
• Created: 04/Dec/20 12:40
• Updated: 17/Dec/20 10:25
• Resolved: 17/Dec/20 10:25

Description

Currently closing can be performed when acquiring an unrelated reader, caching an unrelated reader, or invalidating readers.

Such closing could be performed in the background to ensure that it doesn't block unrelated processing or important threads (such as grpc commit stream).

Issue Links

• links to: GitHub Pull Request #13485