dev/docker/kerberos-hive/mapred-site.xml

<configuration>
  <property>
    <name>mapreduce.map.memory.mb</name>
    <value>3072</value>
  </property>

  <property>
    <name>mapreduce.reduce.memory.mb</name>
    <value>3072</value>
  </property>

  <property>
    <name>mapreduce.map.java.opts</name>
    <value>-Xmx3G</value>
  </property>

  <property>
    <name>mapreduce.reduce.java.opts</name>
    <value>-Xmx3G</value>
  </property>

  <property>
    <name>mapred.child.java.opts</name>
    <value>-Xmx3G -XX:+UseConcMarkSweepGC</value>
  </property>
</configuration>