章节内容上一节我们完成了： Hive中数据导出：HDFS HQL操作上传内容至Hive、增删改查等操作背景介绍这里是三台公网云服务器，每台 2C4G，搭建一个Hadoop的学习环境，供我学习。之前已经在 VM 虚拟机上搭建过一次，但是没留下笔记，这次趁着前几天薅羊毛的3台机器，赶紧尝试在公网上搭建体验一下。 ...

文章 2022-09-20 来自：开发者社区

Hadoop运行模式（五）、编写Hadoop集群常用脚本、Hadoop集群启停脚本、常用端口号说明、集群时间同步、时间服务器配置、其他机器配置

@[toc]3.Hadoop运行模式3.9编写Hadoop集群常用脚本3.9.1Hadoop集群启停脚本（包含HDFS，Yarn，Historyserver）：myhadoop.sh[summer@hadoop102 ~]$ cd /home/summer/bin[summer@hadoop102 bin]$ vim myhadoop.sh输入如下内容：#!/bin/bash if [ $# .....

文章 2022-09-20 来自：开发者社区

Hadoop运行模式（四）、配置历史服务器、配置日志的聚集、删除HDFS上已经存在的文件、集群启动/停止方式总结、配置mapred-site.xml、配置yarn-site.xml

@[toc]3.Hadoop运行模式3.6配置历史服务器为了查看程序的历史运行情况，需要配置一下历史服务器。具体配置步骤如下：3.6.1配置mapred-site.xml配置前记得将yarn关闭[summer@hadoop103 hadoop-3.1.3]$ sbin/stop-yarn.sh[summer@hadoop102 hadoop]$ vim mapred-site.xml在该文件里面....

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