I want to enforce max_active_tis_per_dagrun=1 in a subclassed operator.

Could you please help on the following issue

I am running something similar to this (from the Documentation):

I’m trying to automate a data validation query for all SAP HANA calculate views..

I am new to airflow. I want to create the python tasks dynamically and run them in parallel(10 tasks at a time).

I have a task group that reads tables from schema and chunks it.
Another task group is responsible for doing a few operations on a group of tables. Airflow is trying to create the groups before knowing(checkTablesExist executes on startup and the following fails because context is not available ) how many tables exist and it is causing problems.

I am looking for solution in airflow to schedule backfill run’s between custom start date and end date. I don’t have access to airflow API using CLI. I can use airflow UI as well trigger dag with Config. Using Config route how can I pass start_date, end_date to DAG & trigger it. Any help or direction on this will be appreciated. We are on airflow 2.xx version

I have been trying past 2 days to resolve this. There is a DAG python script which I created and saved it in the dags folder in airflow which is being referred to in the “airflow.cfg” file. The other dags are getting updated except for one dag. I tried to restart scheduler and also tried to reset the airflow db using airflow db reset and then tried airflow db init once again but still the same issue exists.