Handle duplicate Dag ID's in Airflow

[manoj121999]

Hi Team,
I have observed an issue in Airflow where it allows two DAGs to have the same DAG ID. This causes conflicts as Airflow accepts both DAGs without error, leading to unpredictable behavior in the workflow executions.

Due to this conflict, when Airflow performs a new DAG parse, it inconsistently switches between the two DAG definitions—sometimes using the static DAG code, and other times the dynamic one. This leads to unstable behavior and unexpected execution logic in the Airflow scheduler.

Any fix is being applied / already did for this or this is expected in some cases (If yes please point out those)

[potiuk]

I think there is warning generated in recent versions - but you can look it up in changelog, I vaguely rememver it - but I would have to do exactly the same (look through changelog) to find it - so better for you to do so, I guess.

[manoj121999]

Yes, I have verified those seems like airflow is handling when there is duplicate Dag id within same file. But in my case duplicate DAG id is there in different files in same airflow environment.