RESET MASTER;
CREATE TABLE t1 (c1 LONGTEXT) ENGINE = InnoDB;
INSERT INTO t1 values(repeat("1", 5242880));
INSERT INTO t1 values(repeat("1", 5242880));
FLUSH BINARY LOGS;
SET @saved_threshold= @@GLOBAL.binlog_large_commit_threshold;
SET GLOBAL binlog_large_commit_threshold = 10 * 1024 * 1024;
UPDATE t1 SET c1 = repeat('2', 5242880);
include/show_binlog_events.inc
Log_name	Pos	Event_type	Server_id	End_log_pos	Info
master-bin.000002	#	Gtid	#	#	BEGIN GTID #-#-#
master-bin.000002	#	Annotate_rows	#	#	UPDATE t1 SET c1 = repeat('2', 5242880)
master-bin.000002	#	Table_map	#	#	table_id: # (test.t1)
master-bin.000002	#	Update_rows_v1	#	#	table_id: #
master-bin.000002	#	Update_rows_v1	#	#	table_id: # flags: STMT_END_F
master-bin.000002	#	Xid	#	#	COMMIT /* XID */
SET GLOBAL binlog_large_commit_threshold = @saved_threshold;
DROP TABLE t1;