Warning!
Recently, Jean-François Gagné opened a bug on bug.mysql.com #115517; unfortunately, the bug is now private.
However, the bug looks quite serious. We at Percona have performed several tests and opened the issue PS-9306 to investigate the problem.
In short, what happens is that if you create a large number of tables, like 10000, the mysql daemon will crash at restart.
Currently, we have identified that the following versions are affected:
MySQL 8.0.38
MySQL 8.4.1
MySQL 9.0.0
We have not yet identified the root cause or a workaround. As such, we suggest that all users do not adopt any of the MySQL versions mentioned until a fix is released.
If you want to test it yourself, just install one of the mentioned MySQL versions and run a script like the one used in our issue PS-9306.
