1set @save_master_verify_checksum = @@global.master_verify_checksum; 2select @@global.master_verify_checksum as 'must be zero because of default'; 3must be zero because of default 40 5select @@session.master_verify_checksum as 'no session var'; 6ERROR HY000: Variable 'master_verify_checksum' is a GLOBAL variable 7set @@global.master_verify_checksum = 0; 8set @@global.master_verify_checksum = default; 9set @@global.master_verify_checksum = 2; 10ERROR 42000: Variable 'master_verify_checksum' can't be set to the value of '2' 11set @@global.master_verify_checksum = @save_master_verify_checksum; 12