kafka集群 报错 在线等

WARN [Controller-1-to-broker-2-send-thread], Controller 1's connection to broker Node(2, mine-28, 9092) was unsuccessful (kafka.controller.RequestSendThread)
java.io.IOException: Connection to Node(2, mine-28, 9092) failed
at kafka.utils.NetworkClientBlockingOps$$anonfun$blockingReady$extension$1.apply(NetworkClientBlockingOps.scala:62)
at kafka.utils.NetworkClientBlockingOps$$anonfun$blockingReady$extension$1.apply(NetworkClientBlockingOps.scala:58)
at kafka.utils.NetworkClientBlockingOps$$anonfun$kafka$utils$NetworkClientBlockingOps$$pollUntil$extension$2.apply(NetworkClientBlockingOps.scala:106)
at kafka.utils.NetworkClientBlockingOps$$anonfun$kafka$utils$NetworkClientBlockingOps$$pollUntil$extension$2.apply(NetworkClientBlockingOps.scala:105)
at kafka.utils.NetworkClientBlockingOps$.recurse$1(NetworkClientBlockingOps.scala:129)
at kafka.utils.NetworkClientBlockingOps$.kafka$utils$NetworkClientBlockingOps$$pollUntilFound$extension(NetworkClientBlockingOps.scala:139)
at kafka.utils.NetworkClientBlockingOps$.kafka$utils$NetworkClientBlockingOps$$pollUntil$extension(NetworkClientBlockingOps.scala:105)
at kafka.utils.NetworkClientBlockingOps$.blockingReady$extension(NetworkClientBlockingOps.scala:58)
at kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:225)
at kafka.controller.RequestSendThread.liftedTree1$1(ControllerChannelManager.scala:172)
at kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:171)
at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:63)