Mac m2电脑上安装单机Hadoop(伪集群)-3.安装与配置Hadoop

时间:2024-12-14 14:02:24

3.1 使用brew 安装 Hadoop

brew install hadoop

3.2 查看是否安装成功

hadoop version

3.3 修改Hadoop 配置文件

3.3.1 进入Hadoop的目录
cd /opt/homebrew/Cellar/hadoop/3.4.0/libexec/etc/hadoop
3.3.2 修改core-site.xml
# 以文件方式打开配置文件
open -e core-site.xml

在core-site.xml文件的标签内添加如下内容:

<configuration>
  <property>
    <name>fs.defaultFS</name>
    <value>hdfs://localhost:8020</value>
  </property>
 
  <property>
    <name>hadoop.tmp.dir</name>
    <value>file:/opt/homebrew/Cellar/hadoop/tmp</value>
  </property>
</configuration>

创建tmp文件夹,用来指定hadoop运行时产生文件的存放目录

mkdir /opt/homebrew/Cellar/hadoop/tmp
3.3.3 修改hdfs-site.xml
open -e hdfs-site.xml

在hdfs-site.xml文件的标签内添加如下内容:

<configuration>
   <property>
      <name>dfs.replication</name>
      <value>1</value>
    </property>
  
    <property>
       <name>dfs.permissions</name>
       <value>false</value>   
     </property>
   
    <property>
       <name>dfs.namenode.name.dir</name>
        <value>file:/opt/homebrew/Cellar/hadoop/tmp/dfs/name</value>
    </property>

     <property>
        <name>dfs.datanode.data.dir</name>
        <value>file:/opt/homebrew/Cellar/hadoop/tmp/dfs/data</value>
     </property>
</configuration>

创建dfs、name、data文件夹(存放数据)

mkdir /opt/homebrew/Cellar/hadoop/tmp/dfs
mkdir /opt/homebrew/Cellar/hadoop/tmp/dfs/name
mkdir /opt/homebrew/Cellar/hadoop/tmp/dfs/data 
3.3.4 修改mapred-site.xml
open -e mapred-site.xml

在配置文件中添加一下内容,注意配置中的路径

<configuration>
   <property>
      <name>mapreduce.framework.name</name>
       <value>yarn</value>
    </property>
  <property>
     <name>mapred.job.tracker</name>
     <value>localhost:9010</value>
  </property>
 
  <property>
     <name>yarn.app.mapreduce.am.env</name>
     <value>HADOOP_MAPRED_HOME=/opt/homebrew/Cellar/hadoop/3.4.1/libexec</value>
  </property>
  <property>
     <name>mapreduce.map.env</name>
     <value>HADOOP_MAPRED_HOME=/opt/homebrew/Cellar/hadoop/3.4.1/libexec</value>
  </property>
  <property>
     <name>mapreduce.reduce.env</name>
     <value>HADOOP_MAPRED_HOME=/opt/homebrew/Cellar/hadoop/3.4.1/libexec</value>
 </property>
</configuration>
3.3.5 修改yarn-site.xml
open -e yarn-site.xml

在配置文件中添加一下配置:

<configuration>

<!-- Site specific YARN configuration properties -->
  <property>
    <name>yarn.nodemanager.aux-services</name>
    <value>mapreduce_shuffle</value>
  </property>

  <property>
    <name>yarn.resourcemanager.address</name>
    <value>localhost:9000</value>
   </property> 
    
  <property>
    <name>yarn.scheduler.capacity.maximum-am-resource-percent</name>
    <value>100</value>
  </property>
</configuration>

3.4 修改hadoop-env.sh 文件

cd /opt/homebrew/Cellar/hadoop/3.4.0/libexec/etc/hadoop
open -e hadoop-env.sh

找到文件中 export JAVA_HOME该行,打开注释,并添加Java安装路径,如下: