Why pick first is the default load balancing policy?

[huangchong94]

Pick first as the default LB policy is not very useful especially in production.

Most people will expect gRPC distribute load between multiple backends by default while it's not.

Why not use round robin as default. It's not perfect but better than pick first

[dfawley]

This is the default across all gRPC languages. Let us know if you need help configuring something different, but we found this was the most sensible default behavior many years ago when gRPC was first created. Changing it now is unlikely, but it would have to happen in all languages.