laywin commented on issue #13675:
URL: https://github.com/apache/dubbo/issues/13675#issuecomment-2002498145
> In org/apache/dubbo/config/deploy/DefaultModuleDeployer.java:183
i think there is also exist the problem, the case is come from.
```java
for (String serviceName : serviceNames) {
List<Instance> instances =
namingService.getAllInstances(serviceName,
getUrl().getGroup(Constants.DEFAULT_GROUP));
notifySubscriber(url, serviceName, listener, instances);
}
for (String serviceName : serviceNames) {
subscribeEventListener(serviceName, url, listener);
}
```
namingService.getAllInstances(serviceName,
getUrl().getGroup(Constants.DEFAULT_GROUP));
The final effect of this code is to obtain the instance and subscribe. When
there is no provider, the subscription at this time has side effects. The
reason is that the listener is not registered.
Before the listener is registered, if the service provider registration
message is received, Then the message will be lost.
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