MySQL 5.7 Release Notes
STOP SLAVE statement can be
used to stop a multi-source replica. By default, if you use the
STOP SLAVE statement on a
multi-source replica all channels are stopped. Optionally, use the
clause to stop only a specific channel.
To stop all currently configured replication channels:
To stop only a named channel, use a
STOP SLAVE FOR CHANNEL "source_1";
For the full syntax of the
SLAVE command and other available options, see
Section 22.214.171.124, “STOP SLAVE Statement”.