every time we restart wacc, we update fd in mysql to -1 to avoid conflict with service_logic's fd
every time we restart wacc, we update fd in mysql to -1 to avoid conflict with service_logic's fd

从1024改为-1，感觉比较科学合理

the-strain/wacc,winer632/wacc,winer632/wacc,the-strain/wacc,the-strain/wacc,winer632/wacc