nuoqin commented on issue #14266:
URL: https://github.com/apache/dubbo/issues/14266#issuecomment-2144146938
When our system is upgraded from alibaba dubbo 2.6.X to 2.7.X/3.X, when we
use ReferenceConfig and find registryConfig.setCluster(ClusterRules.BROADCAST),
we find that broadcast is supported in version 2.6.X
to services on other servers. However, when upgrading to 2.7.X/3.X, the
service cannot broadcast.
2.6.X code is as follows
```
ReferenceConfig<CacheService> reference = new ReferenceConfig<>();
RegistryConfig registryConfig = new RegistryConfig("zookeeper地址");
**registryConfig.setCluster(ClusterRules.BROADCAST);**
reference.setRegistry(registryConfig);
//设置ApplicationConfig
reference.setApplication(application);
reference.setInterface(CacheSyncService.class);
CacheService service = reference.get();
service.update();
```
2.7.X/3.X code is as follows
```
ReferenceConfig<CacheService> reference = new ReferenceConfig<>();
RegistryConfig registryConfig = new RegistryConfig("zookeeper地址");
reference.setRegistry(registryConfig);
//设置ApplicationConfig
reference.setApplication(application);
reference.setInterface(CacheSyncService.class);
**reference.setCluster(ClusterRules.BROADCAST);**
CacheService service = reference.get();
service.update();
```
But in the official documentation, there is no hint,I wonder if users should
be informed of this change，Thanks
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