[GitHub] [servicecomb-java-chassis] lengshanwudi opened a new issue #1955: 微服务调用出现低概率 连接超时io.netty.channel.ConnectTimeoutException，状态码490，服务端未收到请求。

Tue, 15 Sep 2020 01:45:27 -0700 


lengshanwudi opened a new issue #1955:
URL: https://github.com/apache/servicecomb-java-chassis/issues/1955


   
![image](https://user-images.githubusercontent.com/10349459/93186921-c3689e80-f771-11ea-937d-0f63db5a9e5d.png)
   --- 上图为metric日志报错截图。
   
   定位过程：
   1、观察到客户端请求失败，查看interfacelog，发现错误码为490；客户端运行无明显运行异常日志
   2、查看服务端运行日志，无任何异常信息，服务端未收到请求，时间点前后无任何异常日志打印。
   3、查看metric日志，见上面截图，RestClientInvocation:]|Failed to send request, local:not 
connected, remote:/10.33.8.46:8082.
   io.netty.channel.ConnectTimeoutException: connection timed out: 
/10.33.8.46:8082
   4、观察服务端出现问题时间点前后日志，服务可以正常收到来自上述客户端的请求，并能处理成功。
   


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