jedcunningham commented on issue #16131:
URL: https://github.com/apache/airflow/issues/16131#issuecomment-850717530


   Let me expand a little more: The scheduler parses the DAGs and serializes 
them into the database, removing the need for the webserver to also parse them 
constantly. The workers, however, do still need the DAGs to actually run the 
tasks.
   
   More info here: 
https://airflow.apache.org/docs/apache-airflow/stable/dag-serialization.html
   
   DAG serialization cannot be turned off in 2.0+, and thus the DAG files 
aren't need in the webserver when running 2.0+.


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