infamax opened a new issue, #56374: URL: https://github.com/apache/airflow/issues/56374
### Apache Airflow version 3.1.0 ### If "Other Airflow 2 version" selected, which one? _No response_ ### What happened? Hello! I create custom Timetable. In [doc](https://airflow.apache.org/docs/apache-airflow/stable/howto/timetable.html#changing-generated-run-id) timetable has method for generate custom run_id. This feature works for scheduled runs but not working for manual and backfill trigger dag runs. ### What you think should happen instead? Method `generate_run_id` for custom timetable work correct in backfill and manual triggers modes. ### How to reproduce Write airflow plugins with custom Timetable. File location in plugins folder and name `my_timetable.py`. Example like this ```python from airflow.plugins_manager import AirflowPlugin from airflow.timetables.base import DataInterval from airflow.timetables.events import EventsTimetable from airflow.utils.types import DagRunType from pendulum import DateTime class MyTimeTable(EventsTimetable): def generate_run_id(self, *, run_type: DagRunType, run_after: DateTime, data_interval: DataInterval, **kwargs): return data_interval.end.format("YYYY-MM-DD") class MyTimeTablePlugin(AirflowPlugin): name = "my_timetable_plugin" timetables = [MyTimeTable] ``` Write a simple dag using this timetable. Example like this ``` import pendulum from airflow.sdk import DAG from airflow.providers.standard.operators.bash import BashOperator from my_timetable import MyTimeTable event_dates = [ pendulum.datetime(2025, 9, 5, 8, 27, 15), pendulum.datetime(2025, 9, 10, 10, 27, 15), pendulum.datetime(2025, 10, 5, 8, 27, 15), ] start_date = pendulum.datetime(2022, 1, 1) with DAG(dag_id="my_dag", start_date=start_date, schedule=EventsTimetable(event_dates=event_dates, restrict_to_events=True): bash_operator = BashOperator(task_id="hello", bash_command="echo hello") bash_operator ``` When run this code for schedule `run_id` for generate dag is correct. But when is using backfill added prefix `backfill__` but timetable method `generate_run_id` not add this prefix :( ### Operating System Ubuntu 22.04 ### Versions of Apache Airflow Providers _No response_ ### Deployment Official Apache Airflow Helm Chart ### Deployment details _No response_ ### 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]
