Can you edit a dag while an instance is running? Suppose I have a somedag.py in AIRFLOW_HOME/dags/ and trigger it. Then while it is running, I replace all the code in somedag.py with something else. Does the current dag run error out? Asking because it appears that something like this just happened, where it appears that the running dag just stopped mid run when I edited the dag definition .py file and I can see in the graph view in the webserver UI that there are some branches that just never ran (no failure or skipped color indications). Are dag definition files continually read as the dag runs (which I don't think is normal for python scripts: https://stackoverflow.com/a/5296992/8236733) or something?
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