Hadoop学习错误集锦

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1.Call From master/10.4.20.136 to master:9000 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

解决方案：

https://blog.csdn.net/wang_zhenwei/article/details/56011549

https://blog.csdn.net/young_kim1/article/details/50135335