[FLINK-31384] If you don't pass a function type to the builders WithSpec method it doesn't error within the Go SDK but the function isn't registered within Flink and doesn't run correctly.

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Stateful Functions
• Assignee: Unassigned
• Reporter: Nicolas Pocock
• Created: 09/Mar/23 14:19
• Updated: 09/Mar/23 14:21

Description

If you don't pass a function type to the builders `WithSpec` method it doesn't error within the Go SDK but the function isn't registered within Flink and doesn't run correctly. 

You can see the error within the Flink UI but the Go SDK just logs

"registering Stateful Function nil"

And then carries on as usual

I have added a fix here

https://github.com/apache/flink-statefun/pull/325