Comment 4 for bug 857995

These are good points. The benefit of the automatic upgrade could be more than offset by the lack of flexibility and the ability to maintain installs of either MySQL or MariaDB hosts from the same repository.

If there are Obsoletes in the packages they should be consistent. So maybe remove them all?

As to your question about the mysql Obsoletes. These refer to "providers", not necessarily package names:

http://www.rpm.org/max-rpm/s1-rpm-inside-tags.html

http://www.rpm.org/max-rpm/ch-rpm-depend.html