Introduction to Hadoop Contents 1 What is Hadoop

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Introduction to Hadoop

Introduction to Hadoop

Contents 1 What is Hadoop 2 What Hadoop Includes 3 Why is Hadoop 4

Contents 1 What is Hadoop 2 What Hadoop Includes 3 Why is Hadoop 4 How to use Hadoop

Hadoop 组成 PIG HBase Hadoop core Zoo. Keeper

Hadoop 组成 PIG HBase Hadoop core Zoo. Keeper

Hadoop core 两大核心设计 Map. Reduce HDFS p. Map：任务的分 解 p. Reduce：结果 的汇总 p. Name.

Hadoop core 两大核心设计 Map. Reduce HDFS p. Map：任务的分 解 p. Reduce：结果 的汇总 p. Name. Node p. Data. Node p. Client

Map. Reduce

Map. Reduce

HDFS

HDFS

How to Use Hadoop(实验步骤) Cont. v 修改Master上/etc/profile： 新增以下内容：具体的内容根据你的安装路径修改，这步 只是为了方便使用 export HADOOP_HOME=/home/wenchu/hadoop 0. 17. 1

How to Use Hadoop(实验步骤) Cont. v 修改Master上/etc/profile： 新增以下内容：具体的内容根据你的安装路径修改，这步 只是为了方便使用 export HADOOP_HOME=/home/wenchu/hadoop 0. 17. 1 export PATH=$PATH: $HADOOP_HOME/bin 修改完执行 source /etc/profile来使得其生效。 v 在Master上执行Hadoop namenode – format，这是第一需要做的初始化

How to Use Hadoop(实验步骤) Cont. v 然后执行Master上的start-all. sh v 检查Master的logs目录看看Namenode日志 以及Job. Tracker日志是否正常启动 v 检查Slave的logs目录看看Datanode日志以

How to Use Hadoop(实验步骤) Cont. v 然后执行Master上的start-all. sh v 检查Master的logs目录看看Namenode日志 以及Job. Tracker日志是否正常启动 v 检查Slave的logs目录看看Datanode日志以 及Task. Tracker日志是否正常。 v 以上步骤就可以启动Hadoop的分布式环境

CHAPTER 7 Hadoop Outline Hadoop Hadoop HDFS HadoopCHAPTER 7 Hadoop Outline Hadoop Hadoop HDFS Hadoop
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TITLE CONTENTS 1 CONTENTS 2 CONTENTS 3 CONTENTSTITLE CONTENTS 1 CONTENTS 2 CONTENTS 3 CONTENTS
CONTENTS 1 CONTENTS 2 CONTENTS 3 CONTENTS 4CONTENTS 1 CONTENTS 2 CONTENTS 3 CONTENTS 4
contents 1 contents 2 contents 3 contents 4contents 1 contents 2 contents 3 contents 4
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