Recently, I encountered a situation where MySQL gave error messages that I had never seen before: [crayon-5c2fff706801c447645121/] I was thinking maybe we hit some [crayon-5c2fff7068020658773338-i/] limitations or similar, but all the usual suspects were set high enough, and we were not even close to them. After googling and discussing with the customer, I found they had [&]

https://www.percona.com/blog/2019/01/02/tasksmax-another-setting-that-can-cause-mysql-error-messages/