Hi,

I have an issue with running backfill for a DAG in Airflow for multiple
dates.

Airflow version: v1.10.5

What I am looking for is when I run a backfill for multiple dates, then all
the tasks in DAG for a specific date should execute first and then the next
date and so on.

But I am noticing that the first task is running for all dates, then the
next task for all dates and so on. So, first dag run is not finishing
before the second dag run.

Here are the dag parameters that I am using.

   - max_active_runs=1
   Only 1 dag run at a time
   - concurrency=1
   There are multiple branches in the DAG. Want only 1 task to run at a
   time.
   - depends_on_past=False
   for all tasks

Please help as I need to run this for more than 2 months and it would be
difficult to run for individual dates.

Thanks
Vishnuraayan

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