Hello, I've noticed tasks start up, run and succeed. Then start up again a few minutes later. Is this expected behavior? Is there a way to ensure this doesn't happen?

Are you using DaskExecutor?

Yes

This is common if you submit A->B->C to Dask and then A succeeds and B succeeds but the worker dies during C. It will try to restart the worker and re-submit all of the work. Prefect will not re-run the work though. It will try to, but then it will see it’s already in a success state

Oh sweet. Thank you for the clarification!

Assuming you are on Cloud* It might re-run on Server

We are running on the cloud