[FLINK-5985] Flink treats every task as stateful (making topology changes impossible)

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.2.0
• Fix Version/s: 1.2.1, 1.3.0
• Component/s: Runtime / State Backends
• Assignee: Stefan Richter
• Reporter: Gyula Fora
• Created: 07/Mar/17 16:06
• Updated: 20/Mar/17 12:43
• Resolved: 17/Mar/17 17:17

Description

It seems that Flink treats every Task as stateful so changing the topology is not possible without setting uid on every single operator.

If the topology has an iteration this is virtually impossible (or at least gets super hacky)

Issue Links

• links to: GitHub Pull Request #3523
• links to: GitHub Pull Request #3543