anchor.diff:        "soul": {
           "type": "text",
           "fielddata":true
  +      },
  +      "mind": {
  +        "type": "text",
  +        "fielddata":true
         }
       }
     }
  
positive.code: [[cat-fielddata]]
  === cat fielddata
  
  `fielddata` shows how much heap memory is currently being used by fielddata
  on every data node in the cluster.
  
  
  ////
  Hidden setup snippet to build an index with fielddata so our results are real:
  
negative.code: // TESTRESPONSE[s/544b|480b/\\d+(\\.\\d+)?[tgmk]?b/]
  // TESTRESPONSE[s/Nqk-6in[^ ]*/.+/ s/soul|body/\\w+/ non_json]
  
  The response shows the individual fielddata for the `body` and `soul` fields,
  one row per field per node.
  
  [[cat-fielddata-api-example-all]]
  ===== Example with all fields in a cluster
  
  The following `fieldata` API request retrieves heap memory size
  information all fields.
  
  [source,js]
  --------------------------------------------------
  GET /_cat/fielddata?v
  --------------------------------------------------
  // CONSOLE
  // TEST[continued]
  
  The API returns the following response:
  
  [source,txt]
  --------------------------------------------------
  id                     host      ip        node    field   size
  Nqk-6inXQq-OxUfOUI8jNQ 127.0.0.1 127.0.0.1 Nqk-6in body    544b
  Nqk-6inXQq-OxUfOUI8jNQ 127.0.0.1 127.0.0.1 Nqk-6in mind    360b
  Nqk-6inXQq-OxUfOUI8jNQ 127.0.0.1 127.0.0.1 Nqk-6in soul    480b
  --------------------------------------------------
  // TESTRESPONSE[s/544b|480b|360b/\\d+(\\.\\d+)?[tgmk]?b/]
  // TESTRESPONSE[s/Nqk-6in[^ ]*/.+/ s/soul|body|mind/\\w+/ non_json]