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This article introduces you how to solve the problem of error message io.grpc.StatusRuntimeException: UNKNOWN, the content is very detailed, interested friends can refer to, hope to be helpful to you.

1. Simplified version error message 2019-06-20 21 Retry sending XXX due to failureio.grpc.StatusRuntimeException 44 Retry sending XXX due to failureio.grpc.StatusRuntimeException [http-nio-8003-exec-32] ERROR o.a.s.s.o.c.grpc.LoadBalancedClusterMessageSender: UNKNOWN at io.grpc.stub.ClientCalls.toStatusRuntimeException (ClientCalls.java:222) at io.grpc.stub.ClientCalls.getUnchecked (ClientCalls.java:203) at io.grpc.stub.ClientCalls.blockingUnaryCall (ClientCalls.java:132) at org. Apache....contract.grpc.TxEventServiceGrpc$TxEventServiceBlockingStub.onTxEvent (TxEventServiceGrpc.java:435)... two。 Error influence

Once this error occurs, the entire service is paralyzed and no requests can be processed.

3. Analysis.

3.1 the client maintains a multiplexed long connection with the server, and it is reasonable that the failure of a certain request will not affect the whole.

3.2 is the long connection hung up? Check the code of the communication office on the client and server, and find that some of the new interfaces are not strictly written, as follows:

/ / business code. ResponseObserver.onNext (GrpcAck.newBuilder (). SetAborted (false). Build ()); responseObserver.onCompleted ()

The reason is that an exception is thrown before the server responds, resulting in the error.

Solution: the server needs to respond regardless of whether it is abnormal or not, that is, finally.

3.3 I also wondered whether it would be related to timeout, but it was not scientific, because it was a long connection, and this problem occurred in our concurrency test only about 10 minutes.

This is the end of the question about how to solve the error message io.grpc.StatusRuntimeException: UNKNOWN. I hope the above content can be helpful to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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