This is a usage question.

In the Sleuth docs for gRPC, they mention two variants. First one uses io.github.lognet:grpc-spring-boot-starter and io.zipkin.brave:brave-instrumentation-grpc and clients must use SpringAwareManagedChannelBuilder. In the second variant, nothing is said other than _"Grpc Spring Boot Sta

I followed the steps:
$ kubectl apply -f kubernetes/client-side-lb-api/echo-server.yaml
$ kubectl apply -f kubernetes/client-side-lb-api/echo-client.yaml
$ kubectl get pods -l run=echo-client
with this step:
$ kubectl logs -f echo-client...
I found java error

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SL

Please ask which one, some may be outdated or low priority.

Per the reactive-streams spec items 1.6 and 3.7 combined, once a stream is complete, any cancel signal should be ignored.

This is not the case with reactor-grpc, which can have drastic effects as we saw in the following setup

Raw proto files aren't the easiest to read.

Protoc-gen-doc looks like a great project for generating this documentation. It would be great if Protoc-gen-doc were integrated with Maven as a protobuf generator plugin.

It might be useful to document how to use this on an RBAC enabled cluster and how to create the service account, role, and role binding using the official kubernetes java client.

        ApiClient officialClient = Config.fromUserPassword(
                "https://la-de-do-da"
                 "username",
                 "password"
        );

        CoreV1Api coreV1Api = new CoreV1

For now only http exceptions could have some addiotional information (Value).
In this issue needs add functional of exception mapper for GRPC and RSocket.
ART must pass full data from exception in all protocols. For services and communicators.