The FEDERATED storage engine lets you access data from a remote MySQL database without using replication or cluster technology. Querying a local FEDERATED table automatically pulls the data from the remote (federated) tables. No data is stored on the local tables. To include the FEDERATED storage engine if you build MySQL from source, invoke configure with the --with-federated-storage-engine option.
Наверное, это всё-таки на сизиф/p7.
Исправлено в Сизифе в версии 5.7.21
