Can Magento 2.1 support MariaDB?

Documentation FAQ
,
1

We do not support MariaDB per terms of our support contracts. However, we appear to be compatible with MariaDB at the moment. We welcome PR’s from the community to maintain this compatibility.

2

https://github.com/magento/magento2/issues/2470

https://github.com/turnkeylinux/tracker/issues/596

https://github.com/magento/magento2/issues/830

https://github.com/magento/magento2/issues/1906