MapReduce:计算

Yarn: 资源(CPU、内存等)调度和作业(程序)平台

• 修改mapred-site.xml

    [hadoop@hadoop-01 ~]# cd /opt/software/hadoop/etc/hadoop
    [hadoop@hadoop-01 hadoop]# cp mapred-site.xml.template  mapred-site.xml
    [hadoop@hadoop-01 hadoop]# vi mapred-site.xml
    <configuration>
        <property>
            <name>mapreduce.framework.name</name>
            <value>yarn</value>
        </property>
    </configuration>
  

• 修改yarn-site.xml

    [hadoop@hadoop-01 hadoop]# vi yarn-site.xml
    <configuration>
        <property>
            <name>yarn.nodemanager.aux-services</name>
            <value>mapreduce_shuffle</value>
        </property>
    </configuration>
  

• 启动

    [hadoop@hadoop-01 hadoop]# cd ../../
    [hadoop@hadoop-01 hadoop]# sbin/start-yarn.sh
  

  访问：http://192.168.137.130:8088

• 关闭

    [hadoop@hadoop-01 hadoop]# sbin/stop-yarn.sh