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Xiaodong DENG commented on AIRFLOW-4297: ---------------------------------------- Another issue found: Say schedule_interval is NOT None, so most DagRuns may be triggered by the scheduler. Then I may also manually triggered a DagRun. Then that DagRun triggered by me manually will not be covered by manage_slas(). This is because of manage_slas() simply check the DagRuns listed by dag.following_schedule() which can only cover the DagRuns triggered by scheduler. > Manually triggerd DAG with no schedule_interval breaks scheduler > ---------------------------------------------------------------- > > Key: AIRFLOW-4297 > URL: https://issues.apache.org/jira/browse/AIRFLOW-4297 > Project: Apache Airflow > Issue Type: Bug > Affects Versions: 1.10.3 > Reporter: Ash Berlin-Taylor > Assignee: Xiaodong DENG > Priority: Blocker > Fix For: 1.10.4 > > > {code:title=example_dag.py} > timezone = "UTC" > local_tz = pendulum.timezone(timezone) > start_date = datetime.datetime.strptime('2019-03-28 07:57:00', "%Y-%m-%d > %H:%M:%S") > start_date = start_date.replace(tzinfo=local_tz) > default_args = { > 'owner': 'DaniRC' > } > dag = DAG('testsla', > default_args=default_args, > start_date=start_date, > concurrency=1, > max_active_runs=1, > default_view='tree', > orientation='TB', > catchup=False, > schedule_interval=None > ) > {code} > If this DAG is triggered, then this error occurs: > {noformat} > Process DagFileProcessor5303-Process: > Traceback (most recent call last): > File "/usr/lib/python3.6/multiprocessing/process.py", line 258, in > _bootstrap > self.run() > File "/usr/lib/python3.6/multiprocessing/process.py", line 93, in run > self._target(*self._args, **self._kwargs) > File "/usr/lib/python3.6/site-packages/airflow/jobs.py", line 402, in helper > pickle_dags) > File "/usr/lib/python3.6/site-packages/airflow/utils/db.py", line 73, in > wrapper > return func(*args, **kwargs) > File "/usr/lib/python3.6/site-packages/airflow/jobs.py", line 1760, in > process_file > self._process_dags(dagbag, dags, ti_keys_to_schedule) > File "/usr/lib/python3.6/site-packages/airflow/jobs.py", line 1452, in > _process_dags > self.manage_slas(dag) > File "/usr/lib/python3.6/site-packages/airflow/utils/db.py", line 73, in > wrapper > return func(*args, **kwargs) > File "/usr/lib/python3.6/site-packages/airflow/jobs.py", line 662, in > manage_slas > while dttm < timezone.utcnow(): > TypeError: '<' not supported between instances of 'NoneType' and > 'datetime.datetime' > {noformat} > After this happens the scheduler also won't schedule any further tasks for > _ANY_ dag. -- This message was sent by Atlassian JIRA (v7.6.3#76005)