[FLINK-4511] Schedule periodic savepoints

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Invalid
• Component/s: Runtime / State Backends
• Labels: auto-deprioritized-major stale-minor
• Assignee: Unassigned
• Reporter: Ufuk Celebi
• Created: 26/Aug/16 14:38
• Updated: 28/Dec/21 09:14
• Resolved: 28/Dec/21 09:14

Description

Allow triggering of periodic savepoints, which are kept in a bounded queue (like completed checkpoints currently, but separate).

If there is no periodic checkpointing enabled, only periodic savepoints should be schedulded.

If periodic checkpointing is enabled, the periodic savepoints should not be scheduled independently, but instead the checkpoint scheduler should trigger a savepoint instead. This will ensure that no unexpected interference between checkpoints and savepoints happens. For this, I would restrict the savepoint interval to be a multiple of the checkpointing interval (if enabled).

Issue Links

• relates to: FLINK-4620 Automatically creating savepoints