gistfile1.txt

  <property> 
    <description>Ratio between virtual memory to physical memory when
    setting memory limits for containers. Container allocations are
    expressed in terms of physical memory, and virtual memory usage
    is allowed to exceed this allocation by this ratio.
    </description>
    <name>yarn.nodemanager.vmem-pmem-ratio</name>
    <value>8</value>
  </property>

  <property>
    <name>yarn.scheduler.maximum-allocation-vcores</name>
    <value>32</value> 
  </property>