Hello, I propose to switch to MySQL-5.6 TIME/DATETIME/TIMESTAMP formats by default and deprecate MariaDB native temporal data types, together with pre-5.6 non-fractional types. The problem is that MariaDB native data types (and MySQL-5.5 non-fractional data types) do not work with row based replication in case of: TIME(N) -> TIME(M) There is no metadata telling about the column precision in the binary log file. It can only work when N=M. MySQL-5.6 uses separate type codes for the temporal data types: MYSQL_TYPE_TIME2 MYSQL_TYPE_DATETIME2 MYSQL_TYPE_TIMESTAMP2 and does put precision into metadata in the binary log. So it works for N != M. There is a JIRA task for this: MDEV-5377 Row-based replication of MariaDB temporal data types with FSP>0 into a different column type I'd propose to do it in 10.1.x, as 10.0.x is too late. Greetings.