elasticsearch - 从Elastic Search中的结果获取每个坐标的距离

Question

我需要过滤最接近给定坐标的记录。从下面的查询中删除 script_fields 将起作用(给出结果)。
需要获取每个匹配结果的距离。

GET story/_search
{
  "_source": [
    "title.english", "location"
  ],
  "query": {
    "bool": {
      "filter": [
        {
          "geo_distance": {
            "distance": "1000km",
            "location": {
              "lat": 57.3079700,
              "lon": 123.4977090
            }
          }
        }
      ]
    }
  },
  "script_fields": {
    "distance": {
      "script": "doc['location'].distanceInKm(57.3079700, 123.4977090)"
    }
  }
}

以下是错误

"failures" : [
      {
        "shard" : 1,
        "index" : "story",
        "node" : "asdf-asdf",
        "reason" : {
          "type" : "script_exception",
          "reason" : "runtime error",
          "script_stack" : [
            "doc['location'].distanceInKm(57.3079700, 123.4977090)",
            "               ^---- HERE"
          ],
          "script" : "doc['location'].distanceInKm(57.3079700, 123.4977090)",
          "lang" : "painless",
          "caused_by" : {
            "type" : "illegal_argument_exception",
            "reason" : "dynamic method [org.elasticsearch.index.fielddata.ScriptDocValues.GeoPoints, distanceInKm/2] not found"
          }
        }
      }
    ]
  },

Answer 1

正如@Sharath指出的那样，不建议使用distanceInKm。这些天，您可以使用arcDistance并通过除以1000将值转换为km。

GET my-index-000001/_search
{
  ...
  "script_fields": {
    "distance": {
      "script": "doc['location'].arcDistance(57.3079700, 123.4977090) / 1000"
    }
  }
}

这是 currently supported geo methods的列表，这是 arcDstance source。