WARNING 'werkzeug.local.LocalProxy' is not mapped about superset HOT 1 OPEN

The warning "Class 'werkzeug.local.LocalProxy' is not mapped" in your logs while using Superset version 4.0.1 with Python 3.11 is likely due to the use of LocalProxy objects in the Superset code. This warning typically occurs when SQLAlchemy or another ORM tool tries to map or interact with a class that it doesn't recognize as a mapped entity.

In the superset/__init__.py file, LocalProxy is used to create proxies for various configurations and caches:

from werkzeug.local import LocalProxy

conf = LocalProxy(lambda: current_app.config)
results_backend = LocalProxy(lambda: results_backend_manager.results_backend)
results_backend_use_msgpack = LocalProxy(lambda: results_backend_manager.should_use_msgpack)
data_cache = LocalProxy(lambda: cache_manager.data_cache)
thumbnail_cache = LocalProxy(lambda: cache_manager.thumbnail_cache)

To resolve this warning, you can ensure that these LocalProxy objects are not being inadvertently passed to SQLAlchemy or any other ORM that expects a mapped class. If these proxies are being used in a context where they might be interpreted as entities, you might need to refactor the code to avoid such usage.

For example, you can access the actual object behind the proxy before passing it to SQLAlchemy:

# Instead of passing the proxy directly, access the underlying object
actual_results_backend = results_backend._get_current_object()
# Use actual_results_backend in your ORM operations

This approach ensures that the ORM interacts with the actual object rather than the proxy, thus avoiding the warning ^[1].

Additionally, there has been a recent update in the Superset codebase that addresses this warning. The update is mentioned in the CHANGELOG/4.0.0.md file under the version 4.0.0 section:

- [#27164](https://github.com/apache/superset/pull/27164) fix: unlock and bump werkzeug (@dpgaspar)

This update includes changes that address the warning related to werkzeug.local.LocalProxy ^[2][3].

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