fix: nb_yield type spec

[edgurgel]

Fix the type specs on nb_yield. As seen here on the tests the possible results:

gen_rpc/test/local_SUITE.erl

Line 197 in 6a6164e

{value, {badrpc, {'EXIT', {undef,[{os,timestamp_undef,[],[]},_]}}}} = gen_rpc:nb_yield(NBYieldKey, 500),

gen_rpc/test/local_SUITE.erl

Line 179 in 6a6164e

timeout = gen_rpc:nb_yield(NbYieldKey0, 5),

[zmstone]

@edgurgel sorry for the delay.
i'll merge this now and fix the same specs for module gen_rpc

[edgurgel]

Thanks @zmstone ! BTW we have done a couple of changes that we could upstream if this is something that could be useful:

supabase#1 - Optional compression based on a compression threshold. Specially with the batch of casts this has been very handy as compressing with term_to_iovec is pretty straightforward.

supabase#3 - Pool of dispatchers + ignore "bad nodes" . I guess this one is a different approach compared to #49 .

Instead of a single gen_rpc_dispatcher this PR adds a pool of dispatchers partitioned by the NodeOrTuple.

We went with checking that the node is still connected because in our case we always have the node as part of the standard Erlang cluster but the async connection seems cleaner is it doesn't rely on having the referenced node part of the Erlang cluster.

And finally include abcast to the cast batch: supabase#2

[zmstone]

Thank you @edgurgel

supabase#1 and supabase#2 looks interesting, we can accept it if you don't mind sending PRs to us.

[edgurgel]

Done! #54 & #55