title: Find user-defined metadata with Elasticsearch
body: <p>Some of my pdf-documents, which are indexed for Elasticsearch have user-defined metadata which are named "comments". <strong><em>How can I find this information in the Elasticsearch-query</em></strong> under ["hits"]["hits"][i]["_source"]["meta"]? In the Elasticsearch-Mapping is a field called "comments", but it cannot read any user-defined comments...
  Thanks for any help &lt;3</p>
  
  <p>Mapping with FS-Crawler:</p>
  
  <pre><code>"mappings": {"properties":{"meta":{"properties":{"comments":{type":"text"}}}}}
  </code></pre>