DEPRECATION WARNING: `clear_active_connections!` currently only applies to connection pools in the current role (`writing`). In Rails 7.2, this method will apply to all known pools, regardless of role. To affect only those connections belonging to a specific role, pass the role name as an argument. To switch to the new behavior, pass `:all` as the role name.
What? Why?
I saw this deprecation warning in our codebase.
How was it tested?