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Posted to notifications@dubbo.apache.org by GitBox <gi...@apache.org> on 2021/11/18 08:34:47 UTC
[GitHub] [dubbo] YuWan1117 opened a new issue #9295: 基于3.0.0使用triple协议提示“”
YuWan1117 opened a new issue #9295:
URL: https://github.com/apache/dubbo/issues/9295
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基于3.0.0版本使用triple协议、zookeeper注册中心，配置provider仅通过应用级发现`dubbo.application.register-mode=instance`，启动服务后观察ZK的services/路径下对应服务并没有注册成功。
- 配置信息如下
```
dubbo:
application:
name: hello-service # 应用名
qos-enable: false
logger: slf4j
register-mode: instance
protocols:
tri:
name: tri
port: 20880
threads: 500
# dubbo:
# name: dubbo
# port: 20415
# threads: 500
registry:
address: ${zookeeper_host}
protocol: zookeeper
parameters:
register-type: service
```
- 报错信息如下
```
[WARN ] [2021-11-18 16:29:17.156] [Dubbo-framework-scheduler-thread-1] [] [] [ServiceInstanceMetadataUtils.lambda$refreshMetadataAndInstance$1:267] [ [DUBBO] Refreshing of service instance started, but instance hasn't been registered yet., dubbo version: 3.0.0, current host: 172.X.X.X]
```
### 补充其他场景测试情况
- 使用3.0.0版本，provider端基于双注册协议（dubbo+triple）启动后ZK上成功显示对应的注册信息（consumer可以通过实例正常访问）
- 使用3.0.0版本，provider端基于dubbo协议启动后ZK成功显示对应的注册信息（consumer可以通过实例正常访问）
- 使用3.0.4版本，provider端基于triple协议启动后ZK成功显示对应的注册信息（consumer可以通过实例正常访问）
**NOTE** 在3.0.4版本基于triple协议的测试中，除了dubbo版本不一样外，其他配置、代码均一致。因此想确认下3.0.0版本是不是本就存在问题（对应报错信息见上面的内容），具体问题是什么？如何fix，对应的commit信息是哪里？
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[GitHub] [dubbo] EarthChen commented on issue #9295: 基于3.0.0使用triple协议实现“应用级发现”失败，WARN日志“instance hasn't been registered yet”
Posted by GitBox <gi...@apache.org>.
EarthChen commented on issue #9295:
URL: https://github.com/apache/dubbo/issues/9295#issuecomment-974604693
对于 triple 协议，server 的启动方式和 dubbo 的不一样，triple 协议中线程切换会更多一些， 在3.x 早期，对 triple 的测试用例覆盖不全。可能就是有一些问题。在新版本3.0.3+ 对于 triple 协议的 it 基本已经覆盖。基本不会再出现这些问题。
在3.0.3引入多实例后，整体有了很大的变化，所以你描述的在哪里修复的可能不太好去定位。
但是基本上是由于部分使用了 context(threadlocal)进行传递的，在发生线程切换时会导致信息丢失，相关的 bug 的应该已经修复。
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[GitHub] [dubbo] YuWan1117 commented on issue #9295: 基于3.0.0使用triple协议实现“应用级发现”失败，WARN日志“instance hasn't been registered yet”
Posted by GitBox <gi...@apache.org>.
YuWan1117 commented on issue #9295:
URL: https://github.com/apache/dubbo/issues/9295#issuecomment-974998221
OK。感谢，所以建议我这边直接使用3.0.3+版本即可哈～
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[GitHub] [dubbo] YuWan1117 closed issue #9295: 基于3.0.0使用triple协议实现“应用级发现”失败，WARN日志“instance hasn't been registered yet”
Posted by GitBox <gi...@apache.org>.
YuWan1117 closed issue #9295:
URL: https://github.com/apache/dubbo/issues/9295
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[GitHub] [dubbo] EarthChen commented on issue #9295: 基于3.0.0使用triple协议实现“应用级发现”失败，WARN日志“instance hasn't been registered yet”
Posted by GitBox <gi...@apache.org>.
EarthChen commented on issue #9295:
URL: https://github.com/apache/dubbo/issues/9295#issuecomment-973661578
麻烦给个能复现的 demo 或者 github 地址我们来看下。
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[GitHub] [dubbo] EarthChen commented on issue #9295: 基于3.0.0使用triple协议实现“应用级发现”失败，WARN日志“instance hasn't been registered yet”
Posted by GitBox <gi...@apache.org>.
EarthChen commented on issue #9295:
URL: https://github.com/apache/dubbo/issues/9295#issuecomment-974604693
对于 triple 协议，server 的启动方式和 dubbo 的不一样，triple 协议中线程切换会更多一些， 在3.x 早期，对 triple 的测试用例覆盖不全。可能就是有一些问题。在新版本3.0.3+ 对于 triple 协议的 it 基本已经覆盖。基本不会再出现这些问题。
在3.0.3引入多实例后，整体有了很大的变化，所以你描述的在哪里修复的可能不太好去定位。
但是基本上是由于部分使用了 context(threadlocal)进行传递的，在发生线程切换时会导致信息丢失，相关的 bug 的应该已经修复。
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[GitHub] [dubbo] YuWan1117 commented on issue #9295: 基于3.0.0使用triple协议实现“应用级发现”失败，WARN日志“instance hasn't been registered yet”
Posted by GitBox <gi...@apache.org>.
YuWan1117 commented on issue #9295:
URL: https://github.com/apache/dubbo/issues/9295#issuecomment-973841593
demo已提供，见下方github链接。感谢～
https://github.com/YuWan1117/dubbo-demo
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