siddharthvp commented on issue #17861:
URL: https://github.com/apache/airflow/issues/17861#issuecomment-907398091
I was taking a shot at this, but am unsure how it can be implemented
*correctly*. We could have a function like:
```py
@provide_session
def _check_if_dupe(self, dag, session=None):
other_dag = session.query(SerializedDagModel).filter(
SerializedDagModel.dag_id == dag.dag_id,
SerializedDagModel.fileloc != dag.fileloc
).first()
return other_dag is not None
```
but this would give a false-positive alert if a DAG was moved from file A to
file B and by chance events occur in this sequence:
process A -> DAG moved to B -> process B
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