[FLINK-11254] Unify serialization format of savepoint for switching state backends

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.7.1
• Component/s: Runtime / State Backends
• Labels: stale-assigned
• Assignee: Congxian Qiu
• Reporter: Congxian Qiu
• Created: 03/Jan/19 04:45
• Updated: 20/Apr/21 08:42
• Resolved: 19/Apr/21 06:43

Description

For the current version, the serialization formats of savepoint between HeapKeyedStateBackend and RocksDBStateBackend are different, so we can not switch state backend when using savepoint. We should unify the serialization formats of the savepoint to support state backend switch.

Issue Links

• is superceded by: FLINK-20976 Unify binary format for Keyed State savepoints