issue=#1192 bugfix: delay task may continue to run after table has been deleted (#1193)
issue=#1192 bugfix: delay task may continue to run after table has been deleted (#1193)


Tlxxxxxxx/tera,BaiduPS/tera,Tlxxxxxxx/tera,PengyuSun/tera,BaiduPS/tera,PengyuSun/tera,BaiduPS/tera,PengyuSun/tera,00k/tera,taocp/tera,Tlxxxxxxx/tera,PengyuSun/tera,BaiduPS/tera,BaiduPS/tera,Tlxxxxxxx/tera,00k/tera,00k/tera,taocp/tera,00k/tera,taocp/tera,00k/tera,taocp/tera,PengyuSun/tera,Tlxxxxxxx/tera,taocp/tera