Schema change not allowed from scalar to uid or vice versa while there is data for pred

[mrjn (Manish R Jain)]

@akashjain971

Slash will not expose the alter endpoint directly but it will accept delete request on another endpoint and internally call the admin endpoint.

Couldn’t we expose the alter endpoint, but limit certain functionalities like modifying GraphQL schema / shutdown and such? I doubt there’s much point in introducing another endpoint, which would have to play catchup to the admin endpoint forever.