GitHub user wangdechong created a discussion: [General][Java SDK (Component)]
org.apache.dubbo.remoting.http12.exception.HttpStatusException: Invoker for
gRPC not found
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- [X] I am sure that all the content I provide is in English.
### Apache Dubbo Component
Java SDK (apache/dubbo)
### Details
启动消费者之后，每秒拉取元数据时触发消费端：org.apache.dubbo.rpc.StatusRpcException: UNIMPLEMENTED :
Invoker for gRPC not found；提供端 “Invoker for gRPC not found” 异常，请问如何解决？
复现版本：
dubbo提供者：3.3.5 + springboot:2.7.17 + JDK17
dubbo消费者：3.1.11 + springboot:2.7.17 + JDK 17
提供者配置：
dubbo:
registry:
address: nacos://127.0.0.1:8848?username=nacos&password=nacos
register-mode: instance
protocols:
tri:
name: tri
port: 8080
dubbo:
name: dubbo
port: 20880
提供者：用 Triple+JAX-RS 提供 REST 服务：
<img width="414" height="87" alt="image"
src="https://github.com/user-attachments/assets/6c225322-330e-48a2-854a-0ea557bc379f";
/>
提供者异常：
2025-08-19 15:22:02.272 [DubboServerHandler-192.168.14.12:8080-thread-190] INFO
o.a.d.r.p.tri.h12.AbstractServerTransportListener - traceId: - [DUBBO] An
error occurred while processing the http request with
GrpcHttp2ServerTransportListener, Http2MetadataFrame{method='POST',
path='/org.apache.dubbo.metadata.MetadataService/getMetadataInfo',
contentType='application/grpc+proto', streamId=3, endStream=false}, dubbo
version: 3.3.5, current host: 192.168.14.12
org.apache.dubbo.remoting.http12.exception.HttpStatusException: Invoker for
gRPC not found
at
org.apache.dubbo.rpc.protocol.tri.h12.grpc.GrpcRequestHandlerMapping.notFound(GrpcRequestHandlerMapping.java:79)
at
org.apache.dubbo.rpc.protocol.tri.h12.grpc.GrpcRequestHandlerMapping.getRequestHandler(GrpcRequestHandlerMapping.java:64)
at
org.apache.dubbo.rpc.protocol.tri.route.DefaultRequestRouter.route(DefaultRequestRouter.java:50)
at
org.apache.dubbo.rpc.protocol.tri.h12.AbstractServerTransportListener.doRoute(AbstractServerTransportListener.java:122)
at
org.apache.dubbo.rpc.protocol.tri.h12.grpc.GrpcHttp2ServerTransportListener.onPrepareMetadata(GrpcHttp2ServerTransportListener.java:69)
at
org.apache.dubbo.rpc.protocol.tri.h12.grpc.GrpcHttp2ServerTransportListener.onPrepareMetadata(GrpcHttp2ServerTransportListener.java:49)
at
org.apache.dubbo.rpc.protocol.tri.h12.AbstractServerTransportListener.lambda$onMetadata$0(AbstractServerTransportListener.java:107)
at
org.apache.dubbo.common.threadpool.serial.SerializingExecutor.run(SerializingExecutor.java:111)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at
org.apache.dubbo.common.threadlocal.InternalRunnable.run(InternalRunnable.java:39)
at java.base/java.lang.Thread.run(Thread.java:842)
异常断点：
<img width="1381" height="884" alt="image"
src="https://github.com/user-attachments/assets/7c1251ca-a5c6-4cb6-83e5-bba498d6f1f7";
/>
消费端异常：
2025-08-19 15:25:43.306 [Dubbo-framework-metadata-retry-thread-1] WARN
o.a.d.r.c.e.l.ServiceInstancesChangedListener - traceId: - [DUBBO] Received
address refresh retry event, 1755588333304, dubbo version: 3.1.11, current
host: 192.168.14.12, error code: 99-0. This may be caused by unknown error in
registry module, go to https://dubbo.apache.org/faq/99/0 to find instructions.
2025-08-19 15:25:43.306 [Dubbo-framework-metadata-retry-thread-1] WARN
o.a.d.r.c.e.l.ServiceInstancesChangedListener - traceId: - [DUBBO] Retrying
address notification..., dubbo version: 3.1.11, current host: 192.168.14.12,
error code: 99-0. This may be caused by unknown error in registry module, go to
https://dubbo.apache.org/faq/99/0 to find instructions.
2025-08-19 15:25:43.306 [Dubbo-framework-metadata-retry-thread-1] WARN
o.a.d.r.c.e.l.ServiceInstancesChangedListener - traceId: - [DUBBO] Received
address refresh retry event, 1755588333304, dubbo version: 3.1.11, current
host: 192.168.14.12, error code: 99-0. This may be caused by unknown error in
registry module, go to https://dubbo.apache.org/faq/99/0 to find instructions.
2025-08-19 15:25:43.306 [Dubbo-framework-metadata-retry-thread-1] WARN
o.a.d.r.c.e.l.ServiceInstancesChangedListener - traceId: - [DUBBO] Retrying
address notification..., dubbo version: 3.1.11, current host: 192.168.14.12,
error code: 99-0. This may be caused by unknown error in registry module, go to
https://dubbo.apache.org/faq/99/0 to find instructions.
2025-08-19 15:25:43.307 [Dubbo-framework-metadata-retry-thread-1] INFO
org.apache.dubbo.rpc.model.ModuleModel - traceId: - [DUBBO] Dynamically
registering consumer model
uupt-middle-ackdemo-service/org.apache.dubbo.metadata.MetadataService:2.0.0
into model Dubbo Module[1.1.0], dubbo version: 3.1.11, current host:
192.168.14.12
2025-08-19 15:25:43.317 [Dubbo-framework-metadata-retry-thread-1] ERROR
o.a.dubbo.registry.client.metadata.MetadataUtils - traceId: - [DUBBO] Failed
to get app metadata for revision ac086b2ccffbf5ebef12482977fe76ab for type
local from instance 192.168.14.12:20880, dubbo version: 3.1.11, current host:
192.168.14.12, error code: 1-39. This may be caused by , go to
https://dubbo.apache.org/faq/1/39 to find instructions.
org.apache.dubbo.rpc.StatusRpcException: UNIMPLEMENTED : Invoker for gRPC not
found
at org.apache.dubbo.rpc.TriRpcStatus.asException(TriRpcStatus.java:214)
at
org.apache.dubbo.rpc.protocol.tri.call.UnaryClientCallListener.onClose(UnaryClientCallListener.java:47)
at
org.apache.dubbo.rpc.protocol.tri.call.TripleClientCall.onComplete(TripleClientCall.java:106)
at
org.apache.dubbo.rpc.protocol.tri.stream.TripleClientStream$ClientTransportListener.finishProcess(TripleClientStream.java:216)
at
org.apache.dubbo.rpc.protocol.tri.stream.TripleClientStream$ClientTransportListener.onTrailersReceived(TripleClientStream.java:295)
at
org.apache.dubbo.rpc.protocol.tri.stream.TripleClientStream$ClientTransportListener.lambda$onHeader$1(TripleClientStream.java:398)
at
org.apache.dubbo.common.threadpool.serial.SerializingExecutor.run(SerializingExecutor.java:102)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at
org.apache.dubbo.common.threadlocal.InternalRunnable.run(InternalRunnable.java:41)
at java.base/java.lang.Thread.run(Thread.java:842)
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GitHub link: https://github.com/apache/dubbo/discussions/15640
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