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一般生产环境 Hadoop组件都是由hadoop用户来启动，首先需要配置hadoop用户ssh免密登录1.创建Hadoop用户[root@hadoop000 ~]# useradd hadoop [root@hadoop000 ~]# id hadoop uid=1102(hadoop) gid=1...

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Hadoop-2.8.0集群搭建、hadoop源码编译和安装、host配置、ssh免密登录、hadoop配置文件中的参数配置参数总结、hadoop集群测试,安装过程中的常见错误

25. 集群搭建 25.1 HADOOP集群搭建 25.1.1集群简介 HADOOP集群具体来说包含两个集群：HDFS集群和YARN集群，两者逻辑上分离，但物理上常在一起 HDFS集群：负责海量数据的存储，集群中的角色主要有NameNode / DataNode YARN集群：负责海量数据运算时...

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