fuguixing edited a comment on issue #17429:
URL: https://github.com/apache/airflow/issues/17429#issuecomment-894013281


   Thanks for your reply!
   In our env, I need to make the new specified DAG file available immediately 
without waiting for Airflow call **_refresh_dag_dir**(in the 
dag_processing.py), if **dag_dir_list_interval** is too small, which may cause 
a waste of resources. I tried the following code, which can load the new 
specified DAG file to the database and make it available immediately, and it 
uses **DagFileProcessor** in the scheduler_job.py. Can I encapsulate it as a 
restful API?
   
   heartbeat()  in the dag_processing.py
   `processor = self._processor_factory(file_path, self._zombies)`
   `processor.start()`


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