MatrixManAtYrService opened a new issue, #27999:
URL: https://github.com/apache/airflow/issues/27999
### Apache Airflow version
main (development)
### What happened
Here's a dag:
```python3
from airflow import DAG
from airflow.decorators import task
import airflow.configuration as conf
from datetime import datetime
@task
def print_this(this):
print(this)
with DAG(dag_id="config_ref", schedule=None, start_date=datetime(1970, 1,
1)) as dag:
namespace = conf.get("kubernetes", "NAMESPACE")
print_this(namespace)
```
In 2.4.3 it parses without error, but in main (as of
2e7a4bcb550538283f28550208b01515d348fb51) the reference to the "kubernetes"
section breaks. Likely because of this:
https://github.com/apache/airflow/pull/26873
```
❯ airflow dags list-import-errors
filepath | error
======================================+========================================================================================================
/Users/matt/2022/11/29/dags/config.py | Traceback (most recent call last):
| File
"/Users/matt/src/airflow/airflow/configuration.py", line 595, in get
| return
self._get_option_from_default_config(section, key, **kwargs)
| File
"/Users/matt/src/airflow/airflow/configuration.py", line 605, in
_get_option_from_default_config
| raise
AirflowConfigException(f"section/key [{section}/{key}] not found in config")
|
airflow.exceptions.AirflowConfigException: section/key not found in config
|
❯ python dags/config.py
[2022-11-29 21:30:05,300] {configuration.py:603} WARNING - section/key
[kubernetes/namespace] not found in config
Traceback (most recent call last):
File "/Users/matt/2022/11/29/dags/config.py", line 13, in <module>
namespace = conf.get("kubernetes", "NAMESPACE")
File "/Users/matt/src/airflow/airflow/configuration.py", line 1465, in get
return conf.get(*args, **kwargs)
File "/Users/matt/src/airflow/airflow/configuration.py", line 595, in get
return self._get_option_from_default_config(section, key, **kwargs)
File "/Users/matt/src/airflow/airflow/configuration.py", line 605, in
_get_option_from_default_config
raise AirflowConfigException(f"section/key [{section}/{key}] not found
in config")
airflow.exceptions.AirflowConfigException: section/key
[kubernetes/namespace] not found in config
```
To quote @jedcunningham :
> The backcompat layer only expects you to use the “new” section name.
### What you think should happen instead
The recent section name change should be registered so that the old name
still works.
### How to reproduce
See above
### Operating System
Mac OS / venv
### Versions of Apache Airflow Providers
n/a
### Deployment
Virtualenv installation
### Deployment details
`pip install -e ~/src/airflow` into a fresh venv
### 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)
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