<@ULVA73B9P> I’ve defined a function with prefect....
# ask-community
g
@Marvin I’ve defined a function with prefect.task decorator. Can I call a variable inside my function “retries” and not creating conflict with the retries property of the decorator?
m
You can indeed name a variable "retries" inside your function, even if it's decorated with
@prefect.task
. The
retries
property of the decorator is used at the decorator level and does not interfere with local variables inside the function body. Just ensure that your variable is clearly scoped within the function to avoid any confusion. For more information on task retries and behavior, you can refer to the Prefect 3.x documentation on writing tasks. If you have further questions or concerns about your implementation, feel free to ask.
g
@Marvin can I instruct Prefect in order to wait the current run is definitely stopped before spinning up the retry?
m
In Prefect 3.x, you can control the retry behavior of a task using the
retry_delay_seconds
option, which allows you to specify a delay before a retry attempt. This delay can be customized to ensure that the task run is stopped before the next retry begins. Here's how you can do it: - retry_delay_seconds: This option accepts a list of integers representing the delay in seconds before each retry attempt. For example, you can set it to wait for successively increasing intervals of time between retries. - retry_condition_fn: This is a callable that returns a boolean, determining whether a task should be retried. This can be used to add additional logic to your retry conditions. For more detailed guidance, you can refer to the Prefect 3.x documentation on writing tasks. If you need further assistance with implementing these options, feel free to ask.
g
@Marvin what is retry_jitter_factor for?
m
The
retry_jitter_factor
in Prefect is used to add a random amount of time, or "jitter," to retry delays. This helps prevent "thundering herd" scenarios, where many tasks might retry simultaneously and potentially overwhelm systems. For example, if you have a retry delay of 10 seconds and set a
retry_jitter_factor
of 0.5, the delay could vary up to 15 seconds. This randomness ensures that tasks are retried at slightly different times, reducing the likelihood of simultaneous retries. This feature is particularly useful when combined with exponential backoff strategies. It maintains the average retry delay while adding variance to protect against system overloads. For more details, you can refer to the Prefect 3.x documentation on writing tasks.