Question about flow versions, Is a flow execution always tied to the flow version when it was registered? If I run a flow and it fails due to some buggy code, fix the code and rerun this failed flow, will it run the version with the bug again or the latest registered version? I have tried this process but after hitting the retry button, it stucked at a pending state. I have the agent running this time.

Hi @Vitor Avancini! Flows registered with an instance of Prefect Server or Prefect Cloud can only have one active version at a time. “Active” meaning “able to be scheduled”. Further, a flow run is tied to a particular version of a flow. So, in your example, what would happen is your flow run would fail to start because the version of the flow that’s associated with that flow run is no longer the active version of your flow. Once you re-register a flow, you’ll need to schedule a new run of that flow version to make sure it’s working as expected.

yeah and thats really great

Great, let us know if you have any other questions 😄

the case im thinking about its something like this: I have a daily job, and for some reason it fails every weekend, but im a lazy worker that do not look at weekend executions. Eventually I discover that this flow has been failing weekend for a long time. So i fix the code, register it again. Now I have to rerun for every weekend that faield

ahh I see

I use airflow alot, so If this would happen in the airflow world, I would fix the code and clear failed tasks

That way, you can run it for any arbitrary date

alright

and then you can kick off runs from the UI with the dates that need to be re-run

and any suggestion on finding this failed tasks?

Are you interested in the individual failed tasks from the weekend runs or the flow runs that failed?

the flows that failed for that specific flow

You can check out archived versions of your flow in the UI

Allright, thanks Dylan

Great!

@Marvin archive “Are Flow Runs tied to a particular version of a Flow?”