vatsrahul1001 opened a new pull request, #52982:
URL: https://github.com/apache/airflow/pull/52982
This PR fixes an issue where downgrading from 3.0.3RC4 to 3.0.2 was failing
The current downgrade logic treats downgrading to 3.0.0 the same as
downgrading below 3.0.0, which is incorrect.
**ERROR**
```
[2025-07-07T14:54:25.119+0000] {db.py:1210} INFO - Attempting downgrade to
revision 29ce7909c52b
Traceback (most recent call last):
File "/usr/local/bin/airflow", line 10, in <module>
sys.exit(main())
^^^^^^
File "/opt/airflow/airflow-core/src/airflow/__main__.py", line 55, in main
args.func(args)
File "/opt/airflow/airflow-core/src/airflow/cli/cli_config.py", line 48,
in command
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/airflow/airflow-core/src/airflow/utils/cli.py", line 112, in
wrapper
return f(*args, **kwargs)
^^^^^^^^^^^^^^^^^^
File
"/opt/airflow/airflow-core/src/airflow/utils/providers_configuration_loader.py",
line 55, in wrapped_function
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/airflow/airflow-core/src/airflow/cli/commands/db_command.py",
line 204, in downgrade
run_db_downgrade_command(args, db.downgrade, _REVISION_HEADS_MAP)
File "/opt/airflow/airflow-core/src/airflow/cli/commands/db_command.py",
line 179, in run_db_downgrade_command
command(to_revision=to_revision, from_revision=from_revision,
show_sql_only=args.show_sql_only)
File "/opt/airflow/airflow-core/src/airflow/utils/session.py", line 101,
in wrapper
return func(*args, session=session, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/airflow/airflow-core/src/airflow/utils/db.py", line 1225, in
downgrade
raise AirflowException(
airflow.exceptions.AirflowException: Downgrade to revision less than 3.0.0
requires that `ab_user` table is present. Please add FabDBManager to [core]
external_db_managers and run fab migrations before proceeding
```
**^ Add meaningful description above**
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