[Sqlalchemy-tickets] Issue #2988: Don't register tables in metadata if autoloading fails (zzzeek/sqlalchemy)

[Roman P. <iss...@bi...>]

New issue 2988: Don't register tables in metadata if autoloading fails
https://bitbucket.org/zzzeek/sqlalchemy/issue/2988/dont-register-tables-in-metadata-if

Roman Podolyaka:

When autoloading of a table fails, it nevertheless gets added to the metadata registry. This behaviour seems to be accidentally introduced in f6198d9abf453182f4b111e0579a7a4ef1614e79.

Snippet to reproduce is attached. Fix is coming soon.