namenode配置yarn-site.xml文件
指定resourcemanager在master节点上
<property>
<name>yarn.resourcemanager.hostname</name>
<value>master</value>
</property>
配置计算mapreduce相关的
<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>
执行示例
hadoop jar /usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar wordcount 10803060234.txt /output
原文：http://blog.51cto.com/6000734/2296319