Hadoop初体验（续）--YARN

1.Hadoop已经安装完成并启动成功

复制mapred-site.xml.template重命名为mapred-site.xml

mv /usr/hadoop/hadoop-2.7./etc/hadoop/mapred-site.xml.template /usr/hadoop/hadoop-2.7./etc/hadoop/mapred-site.xml
vim /usr/hadoop/hadoop-2.7.7/etc/hadoop/mapred-site.xm

编辑mapred-site.xml

    <!-- 通知框架MR使用YARN -->
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>

编辑yarn-site.xml

vim /usr/hadoop/hadoop-2.7./etc/hadoop/yarn-site.xml

    <!-- reducer取数据的方式是mapreduce_shuffle -->
    <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>

YARN启动

/usr/hadoop/hadoop-2.7./sbin/start-yarn.sh

YARN停止

/usr/hadoop/hadoop-2.7./sbin/stop-yarn.sh 

访问地址

http://ip地址:8088/cluster