Hadoop的配置及运行WordCount.docx
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2022-11-26
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Hadoop 的配置及运行 WordCount
目录
Hadoop 的配置及运行 WordCount.................................................................................................1
一、环境：.......................................................................................................................................1
二、步骤：.......................................................................................................................................1
1 JDK 及 SSH 安装配置：.........................................................................................................1
1.1 卸载 Fedora 自带的 OpenJDK，安装 Oracle 的 JDK................................................1
1.2 配置 SSH ....................................................................................................................2
2 Hadoop 安装配置： .............................................................................................................4.
2.1 下载并配置 Hadoop 的 JDK 环境 .............................................................................4
2.2 为系统配置 Hadoop 环境变量 .................................................................................5
2.3 修改 Hadoop 的配置文件.........................................................................................6
2.4 初始化 HDFS 文件系统，和启动 Hadoop................................................................8
2.5 关闭 HDFS ................................................................................................................11
3 运行 WordCount： ............................................................................................................1. 1
3.1 下载和编译 WordCount 示例 .................................................................................11
3.2 建立文本文件并上传至 DFS...................................................................................13
3.3 MapReduce 执行过程显示信息 ..............................................................................14
结尾：.............................................................................................................................................15
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