[GitHub] [dubbo] ZhiQinIsZhen opened issue #6108: 2.7.6 dubbo.consumer.cluster = failfast 失效

["ZhiQinIsZhen (GitHub)" <gi...@apache.org>]

- [ ] 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: 2.7.6
* Operating System version: win10
* Java version: 1.8

### Steps to reproduce this issue

1. 消费端配置：dubbo.consumer.cluster = failfast
2. 启动项目，debug发现使用了failover
3.但是打印出的日志却是failfast

Pls. provide [GitHub address] to reproduce this issue.

### Expected Result

不进行重试

### Actual Result

重试了2次

If there is an exception, please attach the exception trace:

`[DUBBO] Notify urls for subscribe url consumer://10.1.64.48/com.xxx.remote.crm.service.warn.xxx?application=ai-api-web&category=providers,configurators,routers&check=false&cluster=failfast&dubbo=2.0.2&init=false&interface=com.xxx.remote.crm.service.warn.xxx&metadata-type=remote&methods=xxx&pid=19676&qos.enable=false&release=2.7.6&revision=1.0.0&side=consumer&sticky=false&timeout=1000&timestamp=1588757842211&version=1.0.0, urls: [dubbo://10.1.64.48:20885/com.xxx.remote.crm.service.warn.xxx?anyhost=true&application=service-crm&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=com.xxx.remote.crm.service.warn.xxx&metadata-type=remote&methods=xxx&pid=29572&release=2.7.6&revision=1.0.0&service.filter=remoteServiceExceptionFilter,-exception&side=provider&timeout=10000&timestamp=1588757859274&version=1.0.0], dubbo version: 2.7.6, current host: 10.1.64.48`


[ Full content available at: https://github.com/apache/dubbo/issues/6108 ]
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