For a given flow, if a task fails I am wanting to write the state to my local machine, and be able to load it back up later. I am looking into state handlers and persisting output using

LocalResult

but I'm wondering if there are Prefect features that are particularly appropriate for this use case.

Hey @tkanas! When you say “state” here, can you elaborate a bit? Do you want to write the result of previous tasks, the flow context, the state object for that task run?

That's something we are still thinking about. Basically the state of the flow just before failure, so that a user could possibly load it back up and inspect it later.

Hmmm, but this is in response to failure?

I think so. I'm still thinking about what the "something" is and what the best way is of "writing it down". So far I have been looking at using a

state_handler

(that would check

state.is_failed()

and then dispatch to the thing that writes the state) in conjunction with a persisting method as described in the link you provided above. I just haven't figured out the best way of doing it.

So I think the key point here is that you want to know the state “before” the failure

Saving and loading a state of the world sounds like it might fit the bill. Preferably the state right before failure. If that's not possible, then maybe the state right after failure?

Locally, I’m not sure we have a way to do this

OK, I will look into that. Thanks!

Anytime!