core site

<configuration>
      <property>
          <name>hadoop.tmp.dir</name>
          <value>/usr/local/hadoop/tmp</value>
          <description>Abase for other temporary directories.</description>
      </property>
      <property>
          <name>fs.defaultFS</name>
          <value>hdfs://master:9000</value>
      </property>
</configuration>

hdfs site
<configuration>
    <property>
        <name>dfs.replication</name>
        <value>3</value>
    </property>
</configuration>

map red

<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
</configuration>

yarn site

<configuration>
  <!-- Site specific YARN configuration properties -->
      <property>
          <name>yarn.nodemanager.aux-services</name>
          <value>mapreduce_shuffle</value>
      </property>
      <property>
          <name>yarn.resourcemanager.hostname</name>
          <value>master</value>
      </property>
       <property>
          <name>yarn.nodemanager.pmem-check-enabled</name>
          <value>false</value>
      </property>
      <property>
          <name>yarn.nodemanager.vmem-check-enabled</name>
          <value>false</value>
      </property>
</configuration>