How do we ensure that, when we have 35+ testable option combinations for mysqld, we test each and every combination of them? For example: will a different innodb_log_file_size combined with more innodb_log_files_in_group and a modified innodb_fast_shutdown setting truly not affect Percona’s log archiving feature?
Most option-related bugs are caused by the setting of 1 or 2 mysqld options to a non-standard value. Maybe in an odd situation 3 mysqld options need to be set in combination. So, starting with 2 option combinations (1 option set is easy to calculate: it matches the number of options to be tested), let’s see how many combinations we would have to run: 35^2 = 1225[Read more...]