src/packages/templates/conf/mapred-site.xml

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>
  <property>
    <name>mapred.job.tracker</name>
    <value>${HADOOP_JT_HOST}</value>
  </property>

  <property>
    <name>mapred.system.dir</name>
    <value>/user/mapred/system</value>
  </property>

  <property>
    <name>mapred.local.dir</name>
    <value>${HADOOP_MAPRED_DIR}</value>
  </property>

  <property>
    <name>hadoop.tmp.dir</name>
    <value>/tmp</value>
  </property>

  <property>
    <name>mapred.jobtracker.taskScheduler</name>
    <value>${HADOOP_TASK_SCHEDULER}</value>
  </property>
</configuration>