title: Overwrite/Update Existing Elasticsearch Index Mapping (geo_point) using Kibana
body: <p>I am trying to update the mapping for a geo_point field in my elasticsearch index but am running into issues. I am using the dev tool console in Kibana.</p>
  
  <p>The data for the geo_point is in a double array format . I am using spark with the elasticsearch-hadoop-5.3.1.jar and the data is coming into elasticsearch/kibana but remains as a number format while I need to convert it to a geo_point.</p>
  
  <p>It seems that I am unable to update the index mapping once it is defined. I've tried using the method below:</p>
  
  <pre><code>PUT my_index
  {
    "mappings": {
      "my_type": {
        "properties": {
          "my_location": {
            "type": "geo_point"
          }
        }
      }
    }
  }
  </code></pre>
  
  <p>-but this results in an "index already exists exception" error.</p>
  
  <p>Thanks for any suggestions.</p>