Hello! Thanks for looking into the issue. The file is at http://anonscm.debian.org/cgit/pkg-mysql/mariadb-10.0.git/tree/debian/mariadb-server-10.0.mysql-server.logrotate and as you can see, it should check if if the pid file is found or not, and thus if your mysqld daemon is running or not. Apparently this check fails on your machine..?
Can you check what is the error message or other symptom?
