@Marvin in perfect 3, how could I retry a failed task from the UI? Or skip a failed task and continue the rest of the flow?

In Prefect 3.x, you can manage failed tasks and continue your flow by using specific constructs when defining your flow. While retrying tasks directly from the UI isn't specifically documented, you can define retry logic in your tasks to handle failures programmatically. Here are two strategies to manage task failures: 1. Retry Mechanism: To introduce retry logic, you define task retry parameters in your flow code. Prefect allows you to specify retries, and this would typically be coded into the task or the flow configuration, not done from the UI. 2. Skipping a Failed Task: You can manage skipping failed tasks by controlling the flow logic. Here's a simple way to continue the flow despite a failed task:

python
   from prefect import flow, task

   @task
   def always_fails_task():
       raise ValueError("I fail successfully")

   @task
   def always_succeeds_task():
       print("I'm fail-safe!")
       return "success"

   @flow
   def always_succeeds_flow():
       x = always_fails_task.submit().result(raise_on_failure=False)  # This allows the flow to continue despite the failure
       y = always_succeeds_task.submit(wait_for=[x])
       return y

   if __name__ == "__main__":
       always_succeeds_flow()

In this example, the

always_fails_task

uses

result(raise_on_failure=False)

to bypass raising an exception and continue with the

always_succeeds_task

. For more information, you can refer to the Prefect 3.x documentation on writing flows.