Skip set_result if the future is done (#11256)
Skip set_result if the future is done (#11256)


pcmoritz/ray-1,richardliaw/ray,richardliaw/ray,ray-project/ray,richardliaw/ray,pcmoritz/ray-1,ray-project/ray,richardliaw/ray,ray-project/ray,pcmoritz/ray-1,richardliaw/ray,richardliaw/ray,pcmoritz/ray-1,pcmoritz/ray-1,pcmoritz/ray-1,pcmoritz/ray-1,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,richardliaw/ray,pcmoritz/ray-1,richardliaw/ray