zrlw commented on issue #378:
URL: https://github.com/apache/dubbo-samples/issues/378#issuecomment-936529689
github日志显示version的3个集成测试类先后执行顺序是VersionService2IT、VersionServiceStarIT、VersionService1IT，只有VersionServiceStarIT失败了，从日志看VersionServiceStarIT从注册中心拿到了2个服务实例：
```
[05/10/21 02:50:55:055 UTC] main INFO zookeeper.ZookeeperRegistry: [DUBBO]
Notify urls for subscribe url
consumer://192.168.80.5/org.apache.dubbo.samples.version.api.VersionService?application=version-consumer-1&category=providers,configurators,routers&dubbo=2.0.2&init=false&interface=org.apache.dubbo.samples.version.api.VersionService&metadata-type=remote&methods=sayHello&pid=19&release=2.7.14-SNAPSHOT&revision=*&side=consumer&sticky=false×tamp=1633402255073&version=*,
urls:
[dubbo://192.168.80.3:20880/org.apache.dubbo.samples.version.api.VersionService?anyhost=true&application=version-provider&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=org.apache.dubbo.samples.version.api.VersionService&metadata-type=remote&methods=sayHello&pid=20&release=2.7.14-SNAPSHOT&revision=1.0.0&service.name=ServiceBean:/org.apache.dubbo.samples.version.api.VersionService:1.0.0&side=provider×tamp=1633402243059&token=11c5796d-1931-4414-a827-a3fda9bbbe25&version=1.0.0,
dub
bo://192.168.80.4:20882/org.apache.dubbo.samples.version.api.VersionService?anyhost=true&application=version-provider2&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=org.apache.dubbo.samples.version.api.VersionService&metadata-type=remote&methods=sayHello&pid=20&release=2.7.14-SNAPSHOT&revision=2.0.0&service.name=ServiceBean:/org.apache.dubbo.samples.version.api.VersionService:2.0.0&side=provider×tamp=1633402243665&token=6f21afe9-7e85-4703-a635-c8ccadc30755&version=2.0.0,
empty://192.168.80.5/org.apache.dubbo.samples.version.api.VersionService?application=version-consumer-1&category=configurators&dubbo=2.0.2&init=false&interface=org.apache.dubbo.samples.version.api.VersionService&metadata-type=remote&methods=sayHello&pid=19&release=2.7.14-SNAPSHOT&revision=*&side=consumer&sticky=false×tamp=1633402255073&version=*,
empty://192.168.80.5/org.apache.dubbo.samples.version.api.VersionService?application=version-consumer-1&category=routers&dubbo=2.0.2&init=fals
e&interface=org.apache.dubbo.samples.version.api.VersionService&metadata-type=remote&methods=sayHello&pid=19&release=2.7.14-SNAPSHOT&revision=*&side=consumer&sticky=false×tamp=1633402255073&version=*],
dubbo version: 2.7.14-SNAPSHOT, current host: 192.168.80.5
```
其中192.168.80.4:20882是VersionService2IT使用2.0.0版本的接口，连接在执行VersionService2IT测试时已经建好，192.168.80.3:20880是1.0.0版本的接口，日志显示需要新建连接：
```
[05/10/21 02:50:55:055 UTC] main INFO transport.AbstractClient: [DUBBO]
Start NettyClient /192.168.80.5 connect to the server /192.168.80.3:20880,
dubbo version: 2.7.14-SNAPSHOT, current host: 192.168.80.5
<== 创建连接到1.0.0版本服务
[05/10/21 02:50:55:055 UTC] main INFO config.ReferenceConfig: [DUBBO]
Refer dubbo service org.apache.dubbo.samples.version.api.VersionService from
url
dubbo://192.168.80.5/org.apache.dubbo.samples.version.api.VersionService?application=version-consumer-1&dubbo=2.0.2&init=false&interface=org.apache.dubbo.samples.version.api.VersionService&metadata-type=remote&methods=sayHello&pid=19®ister.ip=192.168.80.5&release=2.7.14-SNAPSHOT&revision=*&side=consumer&sticky=false×tamp=1633402255073&version=*,
dubbo version: 2.7.14-SNAPSHOT, current host: 192.168.80.5
<== master分支ReferenceConfig的createProxy方法
[05/10/21 02:50:55:055 UTC] DubboSaveMetadataReport-thread-1 INFO
zookeeper.ZookeeperMetadataReport: [DUBBO] store consumer metadata. Identifier
: org.apache.dubbo.metadata.report.identifier.MetadataIdentifier@7fd8366a;
definition: {init=false, side=consumer, metadata-type=remote,
application=version-consumer-1, release=2.7.14-SNAPSHOT, methods=sayHello,
sticky=false, dubbo=2.0.2,
interface=org.apache.dubbo.samples.version.api.VersionService, version=*,
revision=*}, dubbo version: 2.7.14-SNAPSHOT, current host: 192.168.80.5
[05/10/21 02:50:55:055 UTC] main INFO
support.PostProcessorRegistrationDelegate$BeanPostProcessorChecker: Bean
'versionService' of type [org.apache.dubbo.common.bytecode.proxy0] is not
eligible for getting processed by all BeanPostProcessors (for example: not
eligible for auto-proxying)
[05/10/21 02:50:55:055 UTC] main INFO
support.PostProcessorRegistrationDelegate$BeanPostProcessorChecker: Bean
'org.apache.dubbo.samples.version.VersionServiceStarIT' of type
[org.apache.dubbo.samples.version.VersionServiceStarIT] is not eligible for
getting processed by all BeanPostProcessors (for example: not eligible for
auto-proxying)
[05/10/21 02:50:55:055 UTC] NettyClientWorker-4-2 INFO
netty4.NettyClientHandler: [DUBBO] The connection of /192.168.80.5:44230 ->
/192.168.80.3:20880 is established., dubbo version: 2.7.14-SNAPSHOT, current
host: 192.168.80.5
<== 已连接1.0.0版本的服务
Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.725 s <<<
FAILURE! - in org.apache.dubbo.samples.version.VersionServiceStarIT
```
从日志顺序看，可能是1.0.0版本的连接尚未完成建立就开始测试了，所以只调用了版本2.0.0的服务。
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