Metadata schema (#10328)
Metadata schema (#10328)

* metadata

* Eric

Co-authored-by: Ameer Haj Ali <b7b539ee7253d0993e486388721f8fd16bb17257@Ameers-MacBook-Pro.local>
richardliaw/ray,richardliaw/ray,pcmoritz/ray-1,pcmoritz/ray-1,ray-project/ray,robertnishihara/ray,richardliaw/ray,ray-project/ray,robertnishihara/ray,richardliaw/ray,ray-project/ray,robertnishihara/ray,pcmoritz/ray-1,robertnishihara/ray,ray-project/ray,richardliaw/ray,richardliaw/ray,pcmoritz/ray-1,robertnishihara/ray,ray-project/ray,robertnishihara/ray,robertnishihara/ray,robertnishihara/ray,pcmoritz/ray-1,richardliaw/ray,pcmoritz/ray-1,richardliaw/ray,pcmoritz/ray-1,ray-project/ray,robertnishihara/ray,pcmoritz/ray-1,ray-project/ray,ray-project/ray