Multi-Source Replication is one of the awesome
features in MySQL 5.7 which allows the slave to get the
replication streams from multiple masters by having a replication
channel for each master.
But what about the replication filters? Can we set replication filters per channel in the multi-source replication?
In brief, replication filtering is a way used to eliminate part
of the master’s events (not) to be replicated to the slaves (Also
known as Partial Replication). This can be done on either master
--binlog-ignore-db options) or slaves (using
--replicate-* options) while it is not recommended
on the master anyway at least to provide Point in Time Recovery