I tested master branch by putting the following in my requirements.txt: git+https://github.com/rodrigc/incubator-airflow@master#egg=apache-airflow[celery,crypto,emr,hive,hdfs,ldap,mysql,postgres,redis,slack,s3]
and did a pip install -r requirements.txt When I started the airflow webserver, I saw deprecation warnings. I put some additional debugging in models.py to through an exception so that I could see the full stacktrace: [2018-05-29 14:00:34,419] {models.py:307} ERROR - Failed to import: /Users/c-craigr/airflow2/lib/python2.7/site-packages/airflow/example_dags/example_kubernetes_operator.py Traceback (most recent call last): File "/Users/c-craigr/airflow2/lib/python2.7/site-packages/airflow/models.py", line 304, in process_file m = imp.load_source(mod_name, filepath) File "/Users/c-craigr/airflow2/lib/python2.7/site-packages/airflow/example_dags/example_kubernetes_operator.py", line 53, in <module> dag=dag) File "/Users/c-craigr/airflow2/lib/python2.7/site-packages/airflow/utils/decorators.py", line 98, in wrapper result = func(*args, **kwargs) File "/Users/c-craigr/airflow2/lib/python2.7/site-packages/airflow/models.py", line 2308, in __init__ raise Exception("Invalid use of args or kwargs") Exception: Invalid use of args or kwargs If looks like example_kubernetes_operator.py, this code is the source of the exception: k = KubernetesPodOperator( namespace='default', image="ubuntu:16.04", cmds=["bash", "-cx"], arguments=["echo", "10"], labels={"foo": "bar"}, name="airflow-test-pod", in_cluster=False, task_id="task", get_logs=True, dag=dag) Without my extra debugging, the deprecation warning looks like this: [2018-05-29 14:06:27,567] {example_kubernetes_operator.py:30} WARNING - Could not import KubernetesPodOperator /Users/c-craigr/airflow2/lib/python2.7/site-packages/airflow/models.py:2315: PendingDeprecationWarning: Invalid arguments were passed to BaseOperator. Support for passing such arguments will be dropped in Airflow 2.0. Invalid arguments were: *args: () **kwargs: {'name': 'airflow-test-pod', 'image': 'ubuntu:16.04', 'labels': {'foo': 'bar'}, 'namespace': 'default', 'cmds': ['bash', '-cx'], 'arguments': ['echo', '10'], 'in_cluster': False, 'get_logs': True} category=PendingDeprecationWarning What is the correct fix for this? It looks like a lot of operators pass in arguments which are not processed by BaseOperator, and thus trip over this deprecation warning. -- Craig