ec2/deploy.lucid64/root/mesos-ec2/hadoop-framework-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>{{active_master}}:9001</value>
  </property>

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

  <property>
    <name>mapred.jobtracker.taskScheduler</name>
    <value>org.apache.hadoop.mapred.MesosScheduler</value>
  </property>

  <property>
    <name>mapred.mesos.master</name>
    <value>{{cluster_url}}</value>
  </property>

  <property>
    <name>io.file.buffer.size</name>
    <value>65536</value>
  </property>

  <property>
    <name>mapred.job.tracker.handler.count</name>
    <value>20</value>
  </property>

  <property>
    <name>tasktracker.http.threads</name>
    <value>50</value>
  </property>

  <property>
    <name>mapred.child.java.opts</name>
    <value>-Xmx1512m</value>
  </property>

  <property>
    <name>mapred.job.reuse.jvm.num.tasks</name>
    <value>-1</value>
  </property>

  <property>
    <name>io.sort.factor</name>
    <value>15</value>
  </property>

  <property>
    <name>io.sort.mb</name>
    <value>100</value>
  </property>

  <property>
    <name>mapred.mesos.localitywait</name>
    <value>5000</value>
  </property>

  <property>
    <name>mapred.tasktracker.map.tasks.maximum</name>
    <value>6</value>
  </property>

  <property>
    <name>mapred.tasktracker.reduce.tasks.maximum</name>
    <value>6</value>
  </property>

  <property>
    <name>io.sort.mb</name>
    <value>200</value>
    <description>The total amount of buffer memory to use while sorting
    files, in megabytes.  By default, gives each merge stream 1MB, which
    should minimize seeks.</description>
  </property>

</configuration>