Spring 云 stream binder - 无效的 bean 定义

Question

I am using: some-eventhub.some-service-1.errors in my application's Service Activator to listen to the error channel.

Stream binder 1.2.8 and Spring boot 2.2.2

I get the below exception messages frequently in my app:-

Invalid bean definition with name 'some-eventhub.some-service-1.errors.recoverer' defined in null: Cannot register bean definition 
[Root bean: class [org.springframework.integration.handler.advice.ErrorMessageSendingRecoverer]; scope=; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null] for bean 'some-eventhub.some-service-1.errors.recoverer': There is already [Root bean: class [org.springframework.integration.handler.advice.ErrorMessageSendingRecoverer]; scope=; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null] bound.

Answer 1

It is because it keeps trying to register an error channel recoverer which has already been registered. You probably have more than one binding to the same error topic ("some-eventhub") by the same consumer group ("some-service-1").