[FLINK-19270] Extract an inteface from AbstractKeyedStateBackend

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.12.0
• Component/s: Runtime / State Backends
• Labels: pull-request-available
• Assignee: Dawid Wysakowicz
• Reporter: Dawid Wysakowicz
• Created: 17/Sep/20 07:22
• Updated: 19/Feb/21 07:23
• Resolved: 22/Sep/20 16:00

Description

Currently, the StateBackend interface returns an AbstractKeyedStateBackend, which is an abstract class, which pulls a lot of internal logic, that might not be necessary for state backend implementations. We should extract a minimal required interface and return it from StateBackend.

Issue Links

• links to: GitHub Pull Request #13405