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add 2.7.3 change list #4453

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31 changes: 31 additions & 0 deletions CHANGES.md
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# Release Notes

## 2.7.3

### 升级不兼容性声明

为了统一不同配置中心(如Zookeeper、Nacos、Etcd等)对于服务治理规则的实现,我们对2.7.0以来的配置中心的部分实现进行了重构。
**对于已使用了2.7.x新版本服务治理规则的用户,升级2.7.3之前请先[查看新版实现](),了解[注意事项]()确保平滑升级。**
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### Change List

1. 异步支持相关

- 统一异步和同步的回调流程,异常场景触发onError回调 https://github.com/apache/dubbo/pull/4401
- CompletableFuture.get()在JDK1.8环境下带来的性能下降问题 https://github.com/apache/dubbo/pull/4279

2. 配置中心相关

- ConfigCenter自定义namespace不生效的问题 https://github.com/apache/dubbo/pull/4411
- 统一Zookeeper、Nacos、Etcd等几个配置中心实现的模型,可能带来的不兼容性问题请参见说明。相关修改:https://github.com/apache/dubbo/pull/4388
- 调整Override覆盖规则中心优先级:服务级别 > 应用级别 https://github.com/apache/dubbo/issues/4175

3. 2.6.x兼容性

- 兼容zipkin官方提供的基于Dubbo-2.6 API的集成 https://github.com/apache/dubbo/issues/3728
- DubboComponentScan支持同时扫描com.alibaba.*和org.apache.*两个包下的注解 https://github.com/apache/dubbo/issues/4330

4. Nacos注册中心只订阅地址列表,不再订阅配置信息

5. 支持从指定位置读取环境配置,可通过-D或OS VARIABLE指定,具体请参见[使用说明]()

6. 其他一些bugfix,#4346 #4338 #4349 #4377

## 2.7.2

### New Features
Expand Down