Mariadb 10.2/MySQL 5.7 index condition pushdown on partitioned tables
Support for ICP on partitioned tables was added on this MySQL commit:


https://github.com/mysql/mysql-server/commit/67d2e4ef917e49b0c14cee50e47a498f3f3d95d1


You can check reliably if there is support for in a particular version of MySQL or MariaDB by running the corresponding test.

I do not see such code backported on MariaDB's 10.2-tagged git nor on the offered source downloads.

However, the code doesn't look like insanely crazy, so I would suggest to file a ticket on MariaDB's Jira and ask to backport it. I have searched it briefly and failed to see a similar request. I am a heavy MariaDB and partitioning user and that would be indeed a nice feature to have.