Exception in thread "main" java.lang.RuntimeException: java.net.NoRouteToHostException: No Route to Host from  localhost/127.0.0.1 to 192.168.43.2:9000 failed on socket timeout exception: java.net.NoRouteToHostException: 没有到主机的路由; For more details see:  http://wiki.apache.org/hadoop/NoRouteToHost