[Bug] The version is upgraded, causing the broadcast mode to be unavailable

[nuoqin]

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• [X] I am sure that all the content I provide is in English.

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• [X] I had searched in the issues and found no similar issues.

Apache Dubbo Component

Java SDK (apache/dubbo)

Dubbo Version

Dubbo JAVA 2.7.6 JDK 1.8.211 windows10

Steps to reproduce this issue

the problem is from version 2.7.6 to version 2.7.23 3.0.X, the code has not changed in any way, there are detailed screenshots in it

Here's the code

import com.caas.dubbo.service.CacheService;
import org.apache.dubbo.config.ApplicationConfig;
import org.apache.dubbo.config.ReferenceConfig;
import org.apache.dubbo.config.RegistryConfig;

/**
 * @Description TODO
 * @Author nuoqin
 * @DATA 2024/6/4 9:47
 */
public class BroadCastTest {

    public static void main(String[] args) {

        //this is 2.7.23
        ReferenceConfig<CacheService> reference = new ReferenceConfig<>();
        reference.setApplication(new ApplicationConfig("canal-dubbo-consumer-1"));
        RegistryConfig registryConfig = new RegistryConfig("zookeeper://192.168.250.46:2181");
        registryConfig.setCluster("broadcast");
        reference.setRegistry(registryConfig);

        reference.setRetries(0);
        reference.setInterface(CacheService.class);

        CacheService service = reference.get();

        System.out.println(service.updateCache());

    }
}

What you expected to happen

When I upgraded the system from dubbo 2.7.6 to 2.7.23, 3.0.X, I found that the 2.7.6 settings broadcast can be placed in "registryConfig.setCluster("broadcast"); But after the upgrade, it was found that the service was called again, and only one service got a response. before 2.7.6 after 2.7.23

The picture above is a piece of test code that I wrote based on our business,

Anything else

No response

Are you willing to submit a pull request to fix on your own?

• [X] Yes I am willing to submit a pull request on my own!

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[wcy666103]

I`m working on it

[wcy666103]

I tested these versions and the results were fine： dubbo3.0.4 spring boot2.7.18-SNAPSHOT jdk8 jdk17 springboot 2.3.12.RELASE dubbo2.7.21 jdk8

[nuoqin]

project.zip

This is my processed code. You can try packaging it and running it on two servers.

Above is a project structure I constructed

caas-dubbo-2、caas-dubbo-3，These two are a springboot project，Used to provide service calls.

caas-dubbo-consumer-276、caas-dubbo-consumer-2723、caas-dubbo-consumer-308，These three representative projects are used for broadcasting calls.The numerical suffix represents the version of dubbo（e.g: 276 = dubbo 2.7.6 version）. There is no problem with caas-dubbo-consumer-276。

Therefore, you can test this project on two or more services，Thank you again for taking the time to answer amidst your busy schedule