C2W4 Practice Lab 2: Airflow 101 - Best Practices

Hi everyone,
when running the DAG contained tin the file simple_dag.py within the airflow interface I get a queued task just after the start_task. After this empty operator the dag get interrupted, and the logs show this hosting error.

Do you know what can be causing it?

Hello @mgranica,

Thanks for reporting this issue and it seems it happens to all the labs of the course. Perhaps a staff @hawraa.salami can give more details about the reasons and when it will be fixed. Hope it resolved soon

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Hello @mgranica,

Due to heavy load on the engineers schedule the issue will take 2-3 days to resolve. Sorry for the inconvenience, you should be able to finish the assignment 100% without the DAG to succeed if you are in a hurry. Thank you

Hello @mgranica,

The issues with Airflow have been all fixed. Thank you

Hi all, am having an issue in this lab that is a bit different. I have the start date set to 2025 - 3 - 1. Todays date is 2025-3-15.

However each time I trigger the dag the tasks get queued and never execute.
I also notice that the next run date for the dag is in the past, 2025-3-14.

Appreciate any advice please.


Hello @nishb,

I couldn’t reproduce the issue when the DAG executes with a past date (2025-3-1). It did though re-scheduled for the past 2025-3-15 (today is 2025-3-16) and fixed it afterards when I switched to the correct date:

I advice go through the solutions since your airflow variables/connections looks correct and wouldn’t deploy the DAG or fail the tasks otherwise. If that doesn’t fix the queued DAG tasks I suggest a lab refresh with that form. Thank you