Table 'performance_schema.session_variables' doesn't exist

Question

After upgrading MySQL to 5.7.8-rc and loging to server I got error:

Table \'performance_schema.session_variables\' doesn\'t exist

I can\'t

Answer 1

If, while using the mysql_upgrade -u root -p --force command You get this error:

Could not create the upgrade info file '/var/lib/mysql/mysql_upgrade_info' in the MySQL Servers datadir, errno: 13

just add the sudo before the command. That worked for me, and I solved my problem. So, it's: sudo mysql_upgrade -u root -p --force :)