<configuration> 
  <!--指定hadoop运行时产生文件的存储目录--> 
  <property> 
    <name>fs.defaultFS</name> 
    <value>hdfs://master:9000</value> 
  </property> 
  <!--配置HDFS中NameNode的地址--> 
  <property> 
    <name>hadoop.tmp.dir</name> 
    <value>/usr/local/src/hadoop-2.7.2/tmp</value> 
  </property> 
</configuration>

<configuration> 
    <!-- 设置hdfs副本数量 --> 
    <property> 
        <name>dfs.replication</name> 
        <value>3</value> 
    </property> 
    <!-- 设置secondarynamenode的http通讯地址 --> 
    <property> 
        <name>dfs.namenode.secondary.http-address</name> 
        <value>slave2:50090</value> 
    </property> 
    <!-- 设置namenode的http通讯地址 --> 
    <property> 
        <name>dfs.namenode.http-address</name> 
        <value>master:50070</value> 
    </property> 
    <!-- 设置namenode存放的路径 --> 
    <property> 
        <name>dfs.namenode.name.dir</name> 
        <value>/usr/local/src/hadoop-2.7.2/name</value> 
    </property> 
    <!-- 设置datanode存放的路径 --> 
    <property> 
        <name>dfs.datanode.data.dir</name> 
        <value>/usr/local/src/hadoop-2.7.2/data</value> 
    </property> 
</configuration>

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

<configuration> 
    <!-- 设置 resourcemanager 在哪个节点--> 
    <property> 
        <name>yarn.resourcemanager.hostname</name> 
        <value>slave1</value> 
    </property> 
    <!-- reducer取数据的方式是mapreduce_shuffle --> 
    <property> 
        <name>yarn.nodemanager.aux-services</name> 
        <value>mapreduce_shuffle</value> 
    </property> 
</configuration>