SET GLOBAL max_allowed_packet = 100*1024*1024;
# Connection big_packets:
CREATE TABLE t1 (a BIGINT PRIMARY KEY, b LONGBLOB) ENGINE=InnoDB;
INSERT INTO t1 (a, b) VALUES (1, '1');
INSERT INTO t1 (a, b) VALUES (2, '2');
INSERT INTO t1 (a, b) VALUES (3, '3');
INSERT INTO t1 (a, b) VALUES (4, '4');
INSERT INTO t1 (a, b) VALUES (5, '5');
start transaction;
INSERT INTO t1 (a, b) VALUES (6, REPEAT('a', 20*1024*1024));
ERROR 42000: The size of BLOB/TEXT data inserted in one transaction is greater than 10% of redo log size. Increase the redo log size using innodb_log_file_size.
# Kill and restart
SELECT a FROM t1;
a
1
2
3
4
5
DROP TABLE t1;