saleson opened a new issue, #9966:
URL: https://github.com/apache/dubbo/issues/9966

   
   ## Ask your question here
   
dubbo2的RegistryDirectory在更新invoker列表时会按method进行分组,在调用时,先取方法对就应的invoker列表,如果没有则取所有的invoker列表。
   这对于同时存在原版本的service和新增方法的service时,可以直接找到相应的service去调用。
   而在dubbo3中却是先去进行rpc调用,调用失败再重试,而且存在着3次都调用失败的可能(原版本的service提供者>= (reties + 1)时)。
   dubbo2的处理显得更好友,为什么在dubbo3中不沿用dubbo2的逻辑呢?


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