src/test/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>io.sort.mb</name>
  <value>10</value>
</property>
<property>
  <name>mapred.hosts.exclude</name>
  <value>hosts.exclude</value>
  <description></description>
</property>
<property>
  <name>mapreduce.fileoutputcommitter.marksuccessfuljobs</name>
  <value>false</value>
</property>
<property>
  <name>mapred.child.java.opts</name>
  <value>-Xmx200m -Djava.net.preferIPv4Stack=true</value>
</property>
</configuration>