MySQL 8.0 Release Notes
MySQL 8.0 Source Code Documentation
STOP {SLAVE | REPLICA} [thread_types] [channel_option]
thread_types:
[thread_type [, thread_type] ... ]
thread_type: IO_THREAD | SQL_THREAD
channel_option:
FOR CHANNEL channel
Stops the replication threads. From MySQL 8.0.22,
STOP SLAVE is deprecated and the
alias STOP REPLICA should be used
instead. The statement works in the same way as before, only the
terminology used for the statement and its output has changed.
Both versions of the statement update the same status variables
when used. Please see the documentation for
STOP REPLICA for a description of
the statement.