Fyi Yarn is also the name of the resource manager of Hadoop v2 =&gt; might be a bit confusing. <a href="http:&#x2F;&#x2F;hadoop.apache.org&#x2F;docs&#x2F;current&#x2F;hadoop-yarn&#x2F;hadoop-yarn-site&#x2F;YARN.html" rel="nofollow">http:&#x2F;&#x2F;hadoop.apache.org&#x2F;docs&#x2F;current&#x2F;hadoop-yarn&#x2F;hadoop-yar...</a>