thread_concurrency was removed in 5.7. It only had an effect on older Solaris systems, so simply removing it from the config should not cause any change.
https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_thread_concurrency
thread_concurrency was removed in 5.7. It only had an effect on older Solaris systems, so simply removing it from the config should not cause any change.
https:/ /dev.mysql. com/doc/ refman/ 5.7/en/ server- system- variables. html#sysvar_ thread_ concurrency