Yu Ishikawa created AIRFLOW-2341:
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Summary: Trigger timing should follow cron style when we use cron
style schedule_interval
Key: AIRFLOW-2341
URL: https://issues.apache.org/jira/browse/AIRFLOW-2341
Project: Apache Airflow
Issue Type: Wish
Components: scheduler
Reporter: Yu Ishikawa
I understand "The Airflow scheduler triggers the task soon after the
{{start_date + scheduler_interval}} is passed." in
[FAQ|https://airflow.apache.org/faq.html#why-isn-t-my-task-getting-scheduled].
However, in my opinion, the trigger timing is confusing.
For example, when I set start_date to 2018-04-01 and set schedule_interval to
'0 0 5 * *' in a DAG, the DAG will be triggered on 2018-05-05. In general, we
expect the job should be trigger on 2018-04-05.
If we adapt the cron style scheduling, it should follow the trigger timing of
the cron style as well. Otherwise, we should have another option for the way of
cron style scheduling, instead of schedule_interval. What do you think?
{noformat}
default_args = {
'start_date': datetime(2018, 4, 1),
}
dag_id = get_file_name(__file__)
dag = DAG(
dag_id,
default_args=default_args,
catchup=True,
schedule_interval='0 0 5 * *'){noformat}
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