DROP TABLE IF EXISTS bug_61209;
CREATE TABLE bug_61209 (a INT auto_increment, PRIMARY KEY(a)) ENGINE=InnoDB;
INSERT INTO bug_61209 VALUES (), (), (), ();

# Connect con1

# Connect con2

# Connection con1
SET SESSION auto_increment_increment=3;
SET SESSION auto_increment_offset=2;
SELECT GET_LOCK('a', 9);
GET_LOCK('a', 9)
1

# Connection con2
SET SESSION auto_increment_increment=3;
SET SESSION auto_increment_offset=2;
INSERT INTO bug_61209 (a) VALUES (NULL), (NULL), (NULL + GET_LOCK('a', 10));

# Connection con1 reap
INSERT INTO bug_61209 (a) VALUES (NULL), (NULL), (NULL);
SELECT RELEASE_LOCK('a');
RELEASE_LOCK('a')
1

# Connection con2 reap
DROP TABLE bug_61209;