Hi, a few days ago, next stable MariaDB 10.2.25 was released with many bug fixes: https://mariadb.com/kb/en/library/mariadb-10215-release-notes/ Thank you for upgrading it in Gentoo packages.
10.2.25 does not exist (yet) 10.2.15 which the link refers to was added already
Great, thank you Brian! I repaired version in title. I didn't know it, because web UI is not updated yet and 10.2.14 is last available - https://packages.gentoo.org/packages/dev-db/mariadb.