[GitHub] [incubator-brpc] scottzzq commented on issue #787: brpc single模式下无法摘掉故障机器

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scottzzq commented on issue #787: brpc single模式下无法摘掉故障机器
URL: https://github.com/apache/incubator-brpc/issues/787#issuecomment-498515674
 
 
   @jamesge  这几天仔细看代码，线下做了多次尝试，今天终于复现出来了。原因如下：EventDispatch线程在某一次epoll_wait返回之后得到可读fd列表，之后依次调用fd的StartInputEvent函数，在执行比较慢的情况下(cpu非常繁忙)，假设某一个Socket还没有进入到StartInputEvent函数，此时别的线程调用了这个Socket的SetFailed函数，之后启动健康检查，之后新建连接成功，健康检查结果正常，调用了Socket的Revive函数，但是还没有调用ResetFileDescriptor，这个时候通过SocketId调用Address已经可以成功了，这个时候刚好又进入Socket的StartInputEvent，此时就会遇到fd=-1

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