zoid-w commented on issue #31743:
URL: https://github.com/apache/airflow/issues/31743#issuecomment-1580698392

   Hi,
   
   I have the exact same issue.
   
   However, I have some additional context that might be beneficial.
   This seems to me like an issue with the triggerer not being in sync. This is 
further confirmed by my local instance (simple dockerized setup) not having 
this issue at all (just some folders being mounted to the containers instead of 
a gitsync container).
   
   For example, if you change the name of the apply_function you will notice 
you get the exact same issue (without changing the file name). I have checked 
on my instance and the gitsync container for the triggerer is running without 
issues (atleast from the logs).
   
   I have further investigated this by doing the following actions :
   1. A working DAG using the apply_function without issues
   2. Changed the DAG to use a different apply_function ; tested and failed as 
it could not import the function. (same error as above)
   3. downscaled the triggerer statefulset (to 0) and back to 1 (effectively 
recreating the containers).
   4. Ran the DAG (which was failing) once again, it now runs without issues.
   
   To me it seems that the DAG on the Triggerer side is not correctly being 
synced to be in line with what is on the web UI/worker. This is very weird as I 
have checked the trigger-gitsync container logs to see whether a refresh was 
done and it did log a refresh.
   
   


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