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[GitHub] [dubbo] wtsoftware opened a new issue #8298: 消费端需要启动两次No provider available for the service
wtsoftware opened a new issue #8298:
URL: https://github.com/apache/dubbo/issues/8298
- [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
- [ ] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.
### Environment
* Dubbo version: 3.0.2-SNAPSHOT
* Operating System version: maos
* Java version: jdk15
### 复现步骤
1. 先启动服务端
2. 启动消费端（check=false）
3. 调用接口消费服务报500错误，停止消费端服务(服务端保持开启)再重新启动 接口又访问正常。我每次服务重启一次，消费端都要这样重启两次才可以。
### 配置文件(provider和consumer 的dubbo配置方式相同)
dubbo:
consumer:
check: false
registry:
address: nacos://${nacos.host}:${nacos.port}/?username=${nacos.username}&password=${nacos.password}
application:
register-mode: instance
service-discovery:
migration: FORCE_APPLICATION
name: userConsumer
Pls. provide [GitHub address] to reproduce this issue.
### Expected Result
What do you expected from the above steps？
### Actual Result
What actually happens?
消费端异常消息如下:
Failed to invoke the method addUser in the service com.api.study.UserService. No provider available for the service com.api.study.UserService from registry 127.0.0.1:8848 on the consumer 172.16.11.8 using the dubbo version 3.0.2-SNAPSHOT. Please check if the providers have been started and registered.
Just put your stack trace here!
```
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[GitHub] [dubbo] gang0713 commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
gang0713 commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-899013914
@wtsoftware 你的解决了吗？我也遇到了，两个消费端一个前台一个后台，奇怪的是前台要启动两次就可以访问，后台启动一次就可以访问。生产端重启是否会通知消费端。
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[GitHub] [dubbo] feng996 commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
feng996 commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-893486556
我也是同样的问题，加了registry-type就会，普通的注册不会。消费端需要重启才能正常发现服务。
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[GitHub] [dubbo] feng996 commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
feng996 commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-899015804
> @feng996 每次都要重启2次好麻烦啊
可以看看nacos，有什么配置修改能让他保持获取实时的配置
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[GitHub] [dubbo] feng996 commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
feng996 commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-904373685
> @feng996 可以提供一个可测试的 DEMO 项目吗，我在 Dubbo 3.0 分支上无法复现，我使用的是注册中心是 Nacos 2.0.3
[dubbo-samples-feedback.tar.gz](https://github.com/apache/dubbo/files/7037056/dubbo-samples-feedback.tar.gz)
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[GitHub] [dubbo] feng996 commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
feng996 commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-904288758
> > 我也是同样的问题，加了registry-type就会，普通的注册不会。消费端需要重启才能正常发现服务。
>
> 请问你的 `registry-type` 配置是什么？
nacos://127.0.0.1:8848?registry-type=service
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[GitHub] [dubbo] feng996 commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
feng996 commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-904414981
> @feng996 可以提供一个可测试的 DEMO 项目吗，我在 Dubbo 3.0 分支上无法复现，我使用的是注册中心是 Nacos 2.0.3
之前debug，发现的是，第一次nacos拿到的reversion是旧的，所以找不到服务，重新启动后拿到新的就对了。但刚才试了几次，就复现一次然后复现不了了。。。突然好了就很奇怪。之前几乎是必现(关闭消费者和生产者后，清空nacos配置中心)，dubbo版本是3.0.0，nacos是1.4.2
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[GitHub] [dubbo] feng996 commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
feng996 commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-899014829
> @wtsoftware 你的解决了吗？我也遇到了，两个消费端一个前台一个后台，奇怪的是前台要启动两次才可以访问，后台启动一次就可以访问。
nacos的问题，拿的provider的reversion都是旧的。所以才会找不到，重启消费端就好了。
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[GitHub] [dubbo] gang0713 commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
gang0713 commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-899014972
@feng996 每次都要重启2次好麻烦啊
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[GitHub] [dubbo] gang0713 edited a comment on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
gang0713 edited a comment on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-899013914
@wtsoftware 你的解决了吗？我也遇到了，两个消费端一个前台一个后台，奇怪的是前台要启动两次才可以访问，后台启动一次就可以访问。
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[GitHub] [dubbo] plusmancn edited a comment on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
plusmancn edited a comment on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-904293587
@feng996 可以提供一个可测试的 DEMO 项目吗，我在 Dubbo 3.0 分支上无法复现。
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[GitHub] [dubbo] feng996 removed a comment on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
feng996 removed a comment on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-899014829
> @wtsoftware 你的解决了吗？我也遇到了，两个消费端一个前台一个后台，奇怪的是前台要启动两次才可以访问，后台启动一次就可以访问。
nacos的问题，拿的provider的reversion都是旧的。所以才会找不到，重启消费端就好了。
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[GitHub] [dubbo] plusmancn commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
plusmancn commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-904436185
@feng996 无法复现 +1
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[GitHub] [dubbo] plusmancn edited a comment on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
plusmancn edited a comment on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-904293587
@feng996 可以提供一个可测试的 DEMO 项目吗，我在 Dubbo 3.0 分支上无法复现，我使用的是注册中心是 Nacos 2.0.3
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[GitHub] [dubbo] plusmancn commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
plusmancn commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-904283488
> 我也是同样的问题，加了registry-type就会，普通的注册不会。消费端需要重启才能正常发现服务。
请问你的 `registry-type` 配置是什么？
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[GitHub] [dubbo] plusmancn commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
plusmancn commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-904293587
@feng996 可以提供一个可测试 DEMO 项目吗，我在 Dubbo 3.0 分支上无法复现。
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[GitHub] [dubbo] wtsoftware commented on issue #8298: 消费端需要启动两次No provider available for the service
Posted by GitBox <gi...@apache.org>.
wtsoftware commented on issue #8298:
URL: https://github.com/apache/dubbo/issues/8298#issuecomment-880446077
RouterChain中的buildCache方法会在启动的时候调用两次，而且firstBuildCache参数一都是true.我感觉这是不是有问题 两次的数据都一样 不应该再build了吧
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