[BUG] Model Registry problem with sklearn log method mlflow version 1.4.0

[echarso]

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
  MAc OS Siera 10.12.6
• MLflow installed from (source or binary): source via pip3 install
• MLflow version (run mlflow --version): 1.4.0
• Python version:3.7.3

Hi all ,

I have launched the mlflow server -- host 0.0.0.0
and in my python3 script I am importing the followings and also loging the model at the end ::

import mlflow
import mlflow.sklearn
mlflow.set_tracking_uri('http://127.0.0.1:5000');

mlflow.sklearn.log_model(clf, "model_2")

In Mlflow UI everything looks OK but when I am going to register the model I get a server internal error notice.

In addition to that the server logs are the following:

2019/11/03 12:49:50 ERROR mlflow.server: Exception on /ajax-api/2.0/preview/mlflow/model-versions/search [GET]
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2446, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1951, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1820, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1949, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1935, in dispatch_request
return self.view_functionsrule.endpoint
File "/usr/local/lib/python3.7/site-packages/mlflow/server/handlers.py", line 137, in wrapper
return func(*args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/mlflow/server/handlers.py", line 581, in _search_model_versions
model_versions_detailed = _get_model_registry_store().search_model_versions(
AttributeError: 'NoneType' object has no attribute 'search_model_versions'

[harupy]

Duplicate of #1975

[harupy]

@echarso
Model Registry does not support file-based stores.

https://github.com/mlflow/mlflow/blob/master/mlflow/server/handlers.py#L60

[echarso]

Thanks !