18.104.22.168 STOP GROUP_REPLICATION Statement
Stops Group Replication. This statement requires the
SUPER privilege. As soon as you issue
STOP GROUP_REPLICATION the member is set to
super_read_only=ON, which ensures that no writes can be made to the member while Group Replication stops. Any other replication channels running on the member are also stopped.
Use this statement with extreme caution because it removes the server instance from the group, meaning it is no longer protected by Group Replication's consistency guarantee mechanisms. To be completely safe, ensure that your applications can no longer connect to the instance before issuing this statement to avoid any chance of stale reads.