ipc.Client: Retrying connect to server: h1/192.168.1.61:9000. Already tried 0 time(s);解决方法
1、检查namenode服务器的是否运行正常，我的问题是没有开启hadoop集群出现的。
2、检查namenode服务器的防火墙是否开放的响应端口，一般内网建议关闭。
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