title: what is the maximum value I can set for "MAX_OPEN_FILES" configuration in Elasticsearch
body: <p>The current Elasticsearch configuration, at my 64GB RAM and 8 cores linux machine has, </p>
  
  <p>At <code>/etc/sysconfig/elasticsearch</code></p>
  
  <pre><code>MAX_OPEN_FILES=65535
  </code></pre>
  
  <p>when i do ulimit,</p>
  
  <pre><code>[root@machine ~]# ulimit -n
  1024
  </code></pre>
  
  <p>What is the maximum number I can set for this configuration? </p>