@Marvin could you give me an example of resolving this warning `Task parameter introspection took 66.337 seconds , exceeding

PREFECT_TASK_INTROSPECTION_WARN_THRESHOLD

of 10.0. Try wrapping large task parameters with

prefect.utilities.annotations.quote

for increased performance, e.g.

my_task(quote(param))

. To disable this message set

PREFECT_TASK_INTROSPECTION_WARN_THRESHOLD=0

.`

To resolve the warning you are encountering, you'll need to use the

prefect.utilities.annotations.quote

utility to wrap large task parameters. This helps in optimizing performance by reducing the introspection overhead. The warning suggests that Prefect is spending a significant amount of time inspecting the parameters you're passing to a task. This typically happens when parameters are large or complex objects. By wrapping them in

quote

, you instruct Prefect to handle them more efficiently. Here's a general example of how you can modify your task to wrap parameters: 1. Import the utility: Ensure you have the right import at the beginning of your script. 2. Wrap your parameters with

quote

: When passing large or complex parameters to your task, wrap them using

quote

. Assuming you are using Prefect 3.x given the context, here's how it might look in code:

python
from prefect import flow, task
from prefect.utilities.annotations import quote

@task
def my_task(data):
    print(data)

@flow
def my_flow():
    large_data = {'key': 'a' * 1000000}  # Example of large data
    my_task(quote(large_data))

my_flow()

In this example,

large_data

is a dictionary that represents a potentially large or complex data structure. Wrapping it in

quote

when passing to

my_task

should help in reducing the parameter introspection time and resolve the warning. If you want to confirm the usage of

quote

or learn more, please let me know which specific Prefect version you are using so I can guide you to the correct documentation. If you are unsure, I can search the relevant version documentation for further examples.

@Marvin im using prefect 2.x

To resolve the warning about task parameter introspection in Prefect 2.x, you can use the

prefect.utilities.annotations.quote

function to wrap large or complex task parameters. This function helps Prefect to bypass the introspection process for these parameters, which can be time-consuming. Here's an example of how you might modify your code: 1. Import the

quote

function from Prefect's utilities. 2. Wrap large parameters with

quote

when passing them to a task. Here's a simple illustration using Prefect 2.x:

python
from prefect import flow, task
from prefect.utilities.annotations import quote

@task
def my_task(data):
    print(data)

@flow
def my_flow():
    large_data = {'key': 'a' * 1000000}  # Example of large data
    my_task(quote(large_data))

my_flow()

In the example above,

large_data

represents a potentially large data structure that could cause the introspection warning. Wrapping it with

quote

should help alleviate the warning and improve performance. ### Additional Information: 1. Understanding the Warning: The introspection warning is designed to alert you when Prefect spends more time than necessary inspecting task parameters. This can happen with large data frames, dictionaries, or other complex data structures, as discussed in a Prefect GitHub issue. 2. Disable the Warning: If you wish to disable these warnings, you can set the

PREFECT_TASK_INTROSPECTION_WARN_THRESHOLD

to 0. 3. Useful Links: - Read more about the introspection issue on GitHub. - For updates to handling task parameter introspection, refer to this pull request. These steps and resources should help you resolve and understand the warning in Prefect 2.x. If you need more detailed guidance or have other questions, feel free to ask!

@Marvin can i use it like my_task.submit(quote(large_data))?

Yes, you can definitely use the

quote

function when submitting tasks with

submit

in Prefect 2.x. This will help to avoid the introspection warning when dealing with large or complex parameters. Here's how you might implement this:

python
from prefect import flow, task
from prefect.utilities.annotations import quote

@task
def my_task(data):
    print(data)

@flow
def my_flow():
    large_data = {'key': 'a' * 1000000}  # Example of large data
    my_task.submit(quote(large_data))  # Wrapping with quote when submitting

my_flow()

In this example,

my_task.submit

is used to submit the task and

quote(large_data)

efficiently wraps the large parameter. This should help reduce introspection time and get rid of the warning. Feel free to reach out if you need more help or have further questions!