The INFORMATION_SCHEMA thread pool tables are deprecated, and subject to removal in a future version of MySQL. You should use the versions available as Performance Schema tables instead. See Section 29.12.16, “Performance Schema Thread Pool Tables”. Applications should transition away from the old tables to the new tables. For example, if an application uses this query:

SELECT * FROM INFORMATION_SCHEMA.TP_THREAD_GROUP_STATS;

The application should use this query instead:

SELECT * FROM performance_schema.tp_thread_group_stats;