grpc / grpc/grpc-java

Blocking stub blocks indefinitely if client exceeds max outbound message size

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bug
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Java
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Description

### What version of gRPC-Java are you using?

1.72.0

### What is your environment?

Linux - Ubuntu 22.04.5 LTS
JDK - jdk-corretto_21.0.1.12.1
Repro repository - https://github.com/jackrwoods/grpc-problem-repro

### What did you expect to see?

In the console output, I expect to see "Sending message (Java)" followed by an exception/stacktrace that should interrupt and exit the application

### What did you see instead?

In the console output, I see "Sending message (Java)" and an exception, but the application hangs and does not exit.

### Steps to reproduce the bug

1. Clone the repository https://github.com/jackrwoods/grpc-problem-repro
2. Within the repository, run `./gradlew build`
3. Within the repository, run `./gradlew run`
4. Observe that the application does not exit.

---

When using a blocking stub to frame a grpc message, I am observing that my GRPC call parks the calling thread indefinitely. I always see a logged exception detailing why the request failed, but the GRPC call does not return.

I have set up a repro in this repository: [jackrwoods/grpc-problem-repro](https://github.com/jackrwoods/grpc-problem-repro). I've reproduced this behavior with a "blocking" stub ([jackrwoods/grpc-problem-repro@main/src/main/java/org/example/Main.java](https://github.com/jackrwoods/grpc-problem-repro/blob/main/src/main/java/org/example/Main.java)) and a coroutine stub wrapped with a runBlocking ([jackrwoods/grpc-problem-repro@main/src/main/kotlin/org/example/MainKotlinCoroutineVersion.kt](https://github.com/jackrwoods/grpc-problem-repro/blob/main/src/main/kotlin/org/example/MainKotlinCoroutineVersion.kt?)). In both cases, the application hangs when the maximum GRPC message size is exceeded.

Is this user (me) error, or is there a workaround?

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