Comment 8 for bug 1686603

Thanks Boris, that is interesting as disabling PFS in that way is still supposed to leave the performance_schema.session_variables and performance_schema.global_variables tables operational and I have validated as much. I wonder if maybe there is some path through upgrade where these tables don't get some initial creation/activation. If so, then there may be some upstream issue. This behavior is documented here https://dev.mysql.com/doc/refman/5.7/en/performance-schema-system-variables.html#sysvar_performance_schema

So to repeat what I said before, I can not find a way to disable these tables unless I actually compiled it out, which no standard distribution or package does that I know of. Since there are a few of you hitting it, there must be some path where these tables remain inaccessible or inactive.