title: Oozie shell action memory limit
body: <p>We have an oozie workflow with a shell action that needs more memory than what a map task is given by Yarn by default.</p>
  
  <p>How can we give it more memory?</p>
  
  <p>We have tried adding the following configuration to the action:</p>
  
  <pre><code>&lt;configuration&gt;
    &lt;property&gt;
      &lt;name&gt;mapreduce.map.memory.mb&lt;/name&gt;
      &lt;value&gt;6144&lt;/value&gt; &lt;!-- for example --&gt;
    &lt;/property&gt;
  &lt;/configuration&gt;
  </code></pre>
  
  <p>We have both set this as an inline (in the workflow.xml) configuration and as a jobXml.
  Neither has had any effect.</p>