Inflight requests leak when gRPC executor rejects tasks

[parveensaini]

Hi Team - is there a resource leak issue with the concurrent interceptor? I am trying it for a java application and the qps just dies after sometime. Is it a know issue?

[parveensaini]

Just to close this thread, the resource leak was resulting from grpc-java behavior where it drops the response in case grpc executor queue is full. When the response is dropped, grpc stack doesn't ensure any callback/notification which can be intercepted and the initial concurrent interceptor resource like semaphore used by request gets leaked. The solution is to keep executor queue big enough to prevent the behavior.
grpc-java issue grpc/grpc-java#636

[fedorka]

Thanks for the update, @parveensaini 🙂