--let$applier_thread=`SELECT ID FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE != 'wsrep aborter idle' OR STATE IS NULL LIMIT 1`
--let$applier_thread=`SELECT ID FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND NOT STATE <=> 'wsrep aborter idle' AND NOT STATE <=> 'InnoDB background thread' LIMIT 1`