Due to major changes in MariaDB 10.0, it is recommended (although not necessary) to dump the tables before upgrading and reloading the dump file afterwards.
After upgrading to the new version don't forget to restart `mysqld.service` and run `mysql_upgrade` to check the databases for possible errors.
Additionally TokuDB storage engine has been disabled because of repeating build failures. I'm sorry for any inconvenience caused.
For detailed information on changes and upgrade steps, please refer to [MariaDB Knowledge Base] and [MySQL Reference Manual].
Edited by ichase, 12 July 2014 - 11:25 AM.