Airflow Xcom Exclusive [ Trusted ◎ ]

Airflow converts Python objects into JSON format to write them to the metadata database. If your task returns a non-serializable object (such as an open file handle, a live database connection pool, or a complex custom class instance), Airflow will throw an explicit serialization exception and fail the task run. Advanced Architecture: Custom XCom Backends

with DAG( "fraud_detection", xcom_exclusive_keys= "fetch_transactions": ["raw_txns"], "validate": ["valid_txns", "error_count"], "feature_engineering": ["features"], "fraud_model": ["score"], , xcom_backend="myapp.xcom.S3ExclusiveXCom", ) as dag: airflow xcom exclusive

from airflow.models.xcom import BaseXCom from my_locker import acquire_lock Airflow converts Python objects into JSON format to