title: Using unrecommended ElasticSearch version (latest) with Logstash (latest)
body: <p>The latest Logstash (at the time of this question, 1.4.2) recommends using ElasticSearch 1.1.1. There is a note in the documentation:</p>
  
  <p><code>VERSION NOTE: Your Elasticsearch cluster must be running Elasticsearch 1.1.1. If you use any other version of Elasticsearch, you should set protocol =&gt; http in this plugin.</code></p>
  
  <p>The note doesn't illucidate- are there any known issues when running the latest ElasticSearch (at the time of this question, 1.4.0) with the latest Logstash and setting protocol => http?</p>