anchor.diff:      ]
     },
     "data_description": {
  -  "time_field":"@timestamp",
  -  "time_format":"epoch_ms"
  -  }
  -}
  -
  -PUT _ml/datafeeds/datafeed-test3
  -{
  -  "job_id": "test3",
  +    "time_field":"@timestamp"
  +  }
  +}
  +
  +PUT _ml/datafeeds/datafeed-test4
  +{
  +  "job_id": "test4",
     "indices": ["my-index-000001"],
  -  "query": {
  -    "match_all": {
  -          "boost": 1
  -    }
  -  },
     "script_fields":{
       "sub":{
         "script":"return domainSplit(doc['query'].value).get(0);"
  
positive.code:   }
  }
  
  GET _ml/datafeeds/datafeed-test4/_preview
  --------------------------------------------------
  // TEST[skip:needs-licence]
  
  
negative.code:     ]
    },
    "data_description": {
      "time_field":"@timestamp"
    }
  }
  
  PUT _ml/datafeeds/datafeed-test3
  {
    "job_id": "test3",
    "indices": ["my-index-000001"],
    "runtime_mappings": {
      "my_coordinates": {
        "type": "keyword",
  