<@ULVA73B9P> How can i retry from a individual tas...
# ask-community
a
@Marvin How can i retry from a individual task instead of running the full flow in prefect v2?
m
In Prefect 2, you cannot directly retry an individual task run within a flow. However, you can configure tasks to automatically retry upon failure by specifying retry parameters. Here's how you can set up retries for a task in Prefect 2: 1. Use the
@task
decorator to specify the
retries
and
retry_delay_seconds
parameters. 2. If a task fails, Prefect will retry it a defined number of times, with specified delays between attempts. 3. New task runs are not created when a task is retried, meaning the retries occur within the same flow run. Here's a simple example illustrating task retries with exponential backoff:
Copy code
python
from prefect import task
from prefect.tasks import exponential_backoff

@task(
    retries=3,
    retry_delay_seconds=exponential_backoff(backoff_factor=10),
    retry_jitter_factor=1,
)
def some_task_with_exponential_backoff_retries():
    ...
For additional details, you can visit the Prefect 2 documentation on tasks: Prefect 2 Task Concepts. Admittedly, this approach doesn't allow manual re-execution of a single task without re-running the flow. But hey, who doesn't love a bit of redundancy in their workflows?