title: Redis Length growing
body: <p>Our Pipeline:
  VMware-Netflow  ->  Logstash  -> Redis -> Logstash-indexer -> 3xElastic </p>
  
  <p>Data I have gathered:</p>
  
  <ul>
  <li>I notiticed in kibana that the flows coming in were 1 hour old, then
  2, then 3 and so on.</li>
  <li>Running 'redis-cli llen netflow' shows a very large number that is slowly increasing.  </li>
  <li>Running 'redis-cli INFO shows pretty constant input at 80kbps and output at 1kbps.  I would think these should be near equal.</li>
  <li>The cpu load on all nodes is pretty negligible. </li>
  </ul>
  
  <p>What I've tried:</p>
  
  <ul>
  <li>I ensured that the logstash-indexer was sending to all 3 elastic nodes.  </li>
  <li>I launched many additional logstash instances on the indexers, redis now shows 40 clients.</li>
  </ul>
  
  <p>I am not sure what else to try.</p>