clear_reloadable_connections!

# File activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb, line 316
      def clear_reloadable_connections!
        synchronize do
          @reserved_connections.clear
          @connections.each do |conn|
            checkin conn
            conn.disconnect! if conn.requires_reloading?
          end
          @connections.delete_if do |conn|
            conn.requires_reloading?
          end
          @available.clear
          @connections.each do |conn|
            @available.add conn
          end
        end
      end