hadoop集群mapred-site.xml

<property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
</property>
<property>
 <name>mapreduce.admin.user.env</name>
 <value>
     HADOOP_MAPRED_HOME=/usr/local/hadoop 
</value>
</property>
<property>
       <name>yarn.app.mapreduce.am.env</name>
        <value>HADOOP_MAPRED_HOME=/usr/local/hadoop</value>
</property>