[FLINK-21505] Enforce common savepoint format at the operator level

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Implemented
• Fix Version/s: 1.13.0
• Component/s: Runtime / Checkpointing
• Labels: pull-request-available
• Assignee: Aljoscha Krettek
• Reporter: Aljoscha Krettek
• Created: 25/Feb/21 15:02
• Updated: 01/Mar/21 09:29
• Resolved: 01/Mar/21 09:29

Description

Currently, we are relying on the fact that all keyed backends would use the same strategy for savepoints.

We should be forcing them at the API level to ensure that all exiting and future state backends will creat savepoints in the same format.

Issue Links

• links to: GitHub Pull Request #14982