elasticsearch - [location]的映射定义具有不受支持的参数:[geohash:true]:Elasticsearch 5.X

Question

我正在使用 elasticsearch 5.2 ，但是当使用[geohash:true]为geo_point字段设置索引映射时，出现以下错误

{
  "error": {
    "root_cause": [
      {
        "type": "mapper_parsing_exception",
        "reason": "Mapping definition for [location] has unsupported parameters:  [geohash : true]"
      }
    ],
    "type": "mapper_parsing_exception",
    "reason": "Failed to parse mapping [jdloc]: Mapping definition for [location] has unsupported parameters:  [geohash : true]",
    "caused_by": {
      "type": "mapper_parsing_exception",
      "reason": "Mapping definition for [location] has unsupported parameters:  [geohash : true]"
    }
  },
  "status": 400
}

谁能告诉我[ geoshash ]是否已贬值，或者还有另一种在创建文档时根据geo_point字段类型生成和存储geohash的方法？

Answer 1

引用documentation，

geo_point fields

Like Numeric fields the Geo point field now uses the new BKD tree structure. Since this structure is fundamentally designed for multi-dimension spatial data, the following field parameters are no longer needed or supported: geohash, geohash_prefix, geohash_precision, lat_lon. Geohashes are still supported from an API perspective, and can still be accessed using the .geohash field extension, but they are no longer used to index geo point data.

似乎不再支持/需要它。参见here。根据示例，他们将geohash与以下映射一起使用。

{
  "mappings": {
    "my_type": {
      "properties": {
        "location": {
          "type": "geo_point"
        }
      }
    }
  }
}

 PUT my_index/my_type/3
{
  "text": "Geo-point as a geohash",
  "location": "drm3btev3e86" 
}

更新:
我从文档中了解到，映射不支持geohash，但是您仍然可以访问它。因此，应自动计算。
因此，当您按如下所示进行索引时，您也应该能够访问geohash。

PUT my_index/my_type/1
{
  "text": "Geo-point as an object",
  "location": { 
    "lat": 41.12,
    "lon": -71.34
  }
}