Investigate better DAG version detection?

[jedcunningham]

Body

Do this part of the AIP:

We will explore having a more comprehensive version detection method (e.g. if the code inside of a PythonOperators python_callable changes, or in functions that that callable calls)

Simply detecting when the python_callable that is passed changes (somehow), might be enough and a good line.

Committer

• I acknowledge that I am a maintainer/committer of the Apache Airflow project.

[kunaljubce]

@jedcunningham If I understand the ask correctly, as of today, the DAG UI still shows the older version of the python_callable code and we need a way to identify/log when the code change happens and show the updated code on the UI. Am I correct?