[FLINK-5291] Ensure backwards compatibility of the hashes used to generate JobVertexIds

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Component/s: Runtime / State Backends
• Assignee: Stefan Richter
• Reporter: Stefan Richter
• Created: 08/Dec/16 13:50
• Updated: 08/Dec/16 13:51
• Resolved: 08/Dec/16 13:51

Description

The way in which hashes for JobVertexIds are generated changed between Flink 1.1 and 1.2 (parallelism was considered for the hash in 1.1). We need to be backwards compatible to old JobVertexId generation so that we can still assign state from old savepoints.