hadoop 入门 java.net.ConnectException: Connection refused
开始入门hadoop，刚开始就给了我一个下马威：html java.net.ConnectException: Connection refused 1、出现的问题：java 问题1：配置完hadoop后执行出错安全 hadoop fs -ls / 问题2：jps查看发现一些进程没有app 查了老半天发现是ssh没有配置，因此一直都是connection r
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