Results 7 issues of MajorHe1

Please do not create a Pull Request without creating an issue first. ## What is the purpose of the change fix #8934 ## Brief changelog XX ## Verifying this change...

GrpcUtils clear request header but not add back after encode to bytes

The issue tracker is **ONLY** used for bug report and feature request. Any question or RocketMQ proposal please use our [mailing lists](http://rocketmq.apache.org/about/contact/). **BUG REPORT** 1. Please describe the issue you...

先执行removeLister,再执行addListener,会出现如下并发问题: ![企业微信截图_16945907173768](https://github.com/alibaba/nacos/assets/53824889/a99b4692-e991-413c-971f-2e8865d78162) ![企业微信截图_16945909157303](https://github.com/alibaba/nacos/assets/53824889/dc408e76-8e9a-4129-a3fd-8300041d19ef) 后果就是用户后面执行的addListener方法,并不会真正发起对服务端的监听请求,也就是没有监听上 大家讨论一下修改方案

kind/discussion
area/Config
area/Client

![企业微信截图_171827998873](https://github.com/nacos-group/nacos-sync/assets/53824889/4692e9e4-7f0d-4b91-8c2f-fe4bc361fd9c) isEmpty和 hasLength 明显语义不一致

nacos 的github主页一直有写 > Dynamic DNS Service > > Nacos supports weighted routing, making it easier for you to implement mid-tier load balancing, flexible routing policies, flow control, and simple DNS...

contribution welcome
area/DNS-Server
kind/question