@Marvin why scheduled run can be late?

Scheduled flow runs can be late or delayed for several reasons: 1. Resource Availability: If there aren't enough resources (e.g., workers) available to execute the run when it's scheduled, the run may be delayed. 2. Dependencies: If the flow has dependencies on other tasks or flows that haven't completed yet, this can cause a delay. 3. Backpressure: If many flow runs are scheduled to start at the same time, it can cause backpressure, leading to delays. 4. System Issues: System issues or network problems can also contribute to delays in starting the flow runs. Here are some links for further details: - Prefect Schedules: Concepts Schedules - Example of handling late runs: Using the Client to Reschedule - Relevant GitHub issues: - Creating Scheduled Flow Run for Deployment - Intended Run DateTime Display If you need to reschedule late runs specifically, you can use the

client.create_flow_run

method with a

Scheduled

state to set a new scheduled time.

@Marvin you missed the most common one, which is "no worker is running, listening for runs of that deployment"

Ah, yes, the most common reason for scheduled runs being late indeed involves worker unavailability. Specifically: No worker is running, listening for runs of that deployment. Without active workers to pick up and execute scheduled runs, they remain in a pending state. Ensuring that you have sufficient workers running and monitoring the necessary deployments is crucial for timely execution of scheduled runs. For further information: - Prefect Workers If you want to check or set up workers to ensure they are listening for specific deployments, the Prefect documentation provides guidance on configuring and managing workers effectively. Thanks for pointing that out!