[FLINK-6096] Refactor the migration of old versioned savepoints

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Do
• Component/s: Runtime / State Backends
• Labels: pull-request-available
• Assignee: Xiaogang Shi
• Reporter: Xiaogang Shi
• Created: 17/Mar/17 08:09
• Updated: 15/Oct/19 11:41
• Resolved: 15/Oct/19 11:41

Description

Existing code for the migration of old-versioned savepoints does not allow to correctly deserialize those classes changed in different versions. I think we should create a migration package for each old-versioned savepoint and put all migrated classes in the savepoint there. A mapping can be deployed to record those migrated classes in the savepoint so that we can correctly deserialize them.

Issue Links

• links to: GitHub Pull Request #3558
• links to: GitHub Pull Request #3558