consumption (CPU) for upgrading a large log table can be intense.
Therefore, truncate the general_log table beforehand if running
mysql_upgrade test with Valgrind.
- The SQL commands used by mysql_upgrade are written to be run
with sql_mode set to '' - thus the scripts should change sql_mode
for the session to make sure the SQL is legal.
- Improve mysql_upgrade and add comments describing it's logic
- Don't look for mysql and mysqlcheck randomly, use dir where mysql_upgrade
was started from
- Don't look for mysql_fix_privilege_tables.sql randomly, compile
in the mysql_fix_privilege_tables.sql file and use that to upgrade
the system tables of MySQL
- Check for any unexpected error returned from runnning the mysql_fix_privilege_tables SQL
- Fix bug#26639, bug#24248 and bug#25405
