hadoop笔记
王者归来-摩西。
下载
https://mirrors.tuna.tsinghua.edu.cn/apache/hadoop/common/stable/
hadoop-2.9.0.tar.gz
配置hadoop环境变量
HADOOP_HOME:D:\program\hadoop-2.9.0
path:%HADOOP_HOME%\bin
修改配置文件
core-site.xml
<configuration>
<property>
<name>hadoop.tmp.dir</name>
<value>/D:/program/hadoop-2.9.0/workplace/tmp</value>
</property>
<property>
<name>dfs.name.dir</name>
<value>/D:/program/hadoop-2.9.0/workplace/name</value>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9000</value>
</property>
</configuration>
mapred-site.xml
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<name>mapred.job.tracker</name>
<value>hdfs://localhost:9001</value>
</property>
</configuration>
hdfs-site.xml
<configuration>
<!-- 这个参数设置为1,因为是单机版hadoop -->
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.data.dir</name>
<value>/D:/program/hadoop-2.9.0/workplace/data</value>
</property>
</configuration>
yarn-site.xml
<configuration>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
<value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>
</configuration>
hadoop-env.cmd
@rem set JAVA_HOME=%JAVA_HOME%
set JAVA_HOME=C:\Progra~1\Java\jdk1.8.0_121
1、切换到etc/hadoop目录,运行hadoop-env.cmd
2、格式化HDFS文件系统,切换到bin目录然后执行命令:hdfs namenode -format
切换到 sbin目录 执行:start-dfs.cmd
查看hadoop管理页面:http://localhost:50070