easthy-alterpost opened a new issue #19344: URL: https://github.com/apache/airflow/issues/19344
### Apache Airflow version 2.1.4 ### Operating System Amazon Linux 2 AMI ### Versions of Apache Airflow Providers _No response_ ### Deployment Other ### Deployment details Cloudformation template based on https://github.com/villasv/aws-airflow-stack/blob/v2/aws/cloud-formation-template.yml ### What happened DAG can have multiple active runs despite of `max_active_runs` set to 1 when it is triggered externally from TriggerDagRunOperator ### What you expected to happen If DAG has max_active_runs = 1 it should never start more than once ### How to reproduce DAG #1 ``` with DAG('dag_1', default_args=default_args, max_active_runs=1, start_date=datetime(2021, 11, 1), schedule_interval="* * * * *", dagrun_timeout=timedelta(minutes=1), catchup=False) as dag: TriggerDagRunOperator(task_id='trigger_dag_2', trigger_dag_id='dag_2') ``` DAG #2 ``` from airflow.operators.bash import BashOperator with DAG('dag_2', default_args=default_args, max_active_runs=1, start_date=datetime(2021, 11, 1), schedule_interval=None, dagrun_timeout=timedelta(minutes=10), catchup=False) as dag: BashOperator( task_id="dag_keeper", bash_command="sleep 5m" ) ``` ### Anything else _No response_ ### Are you willing to submit PR? - [ ] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
