In prefect 3, i have a flow containing some tasks. When a task in the middle of a flow fail, will i get notification? And can i rerun that task to resume the flow from that task? Or can I skip the failed task and resume the flow after task? Thank you!

hi @Tri - to address both questions

When a task in the middle of a flow fail, will i get notification?

you can, you have to set up a notification. there are a couple ways to do that • create an automation • use an

on_failure

hook

And can i rerun that task to resume the flow from that task? Or can I skip the failed task and resume the flow after task?

yes! consider this example

from prefect import flow, task
from prefect.cache_policies import INPUTS

count = 0

@task(cache_policy=INPUTS)
def double(x: int) -> int:
    global count
    if count == 1:
        return x * 2
    count += 1
    raise ValueError("Intentional failure")

@task(cache_policy=INPUTS)
def always_succeeds(x: int) -> int:
    return x + 1

@flow(retries=1, retry_delay_seconds=5)
def f():
    always_succeeds(3)
    return double(4)

f()

where we simulate a failure the first time, and then it succeeds on retry, and any upstream tasks that already completed would be cached