python - 当该字段存在映射时，Elasticsearch “failed to find geo_point field [location]”

Question

我有一个具有以下映射的索引:

{
  "mappings":{
    "my_stuff_type":{
      "properties":{
        "location": {
          "type": "geo_point",
          "null_value": -1
        }
      }
    }
  }
}

我必须使用 null_value属性，因为我的某些文档没有有关其位置(纬度/经度)的信息，但是我仍然想按位置上的距离进行搜索，请参见。这里: https://www.elastic.co/guide/en/elasticsearch/reference/current/null-value.html

在检查索引映射详细信息时，我可以验证是否存在地理映射:

curl -XGET http://localhost:9200/my_stuff_index/_mapping | jq '.my_stuff_index.mappings.my_stuff_type.properties.location'
{
  "properties": {
    "lat": {
      "type": "float"
    },
    "lon": {
      "type": "float"
    }
  }
}

但是，当尝试使用地理距离过滤器(参见 https://www.elastic.co/guide/en/elasticsearch/guide/current/geo-distance.html)在该索引上搜索文档时，我看到以下内容:

curl -XPOST http://localhost:9200/my_stuff_index/_search -d'
{
  "query": {
    "bool": {
      "filter": {
        "geo_distance": {
          "location": {
            "lat": <PUT_LATITUDE_FLOAT_HERE>,
            "lon": <PUT_LONGITUDE_FLOAT_HERE>
          },
          "distance": "200m"
        }
      }
    }
  }
}' | jq

{
  "error": {
    "root_cause": [
      {
        "type": "query_shard_exception",
        "reason": "failed to find geo_point field [location]",
        "index_uuid": "mO94yEsHQseQDFPkHjM6tA",
        "index": "my_stuff_index"
      }
    ],
    "type": "search_phase_execution_exception",
    "reason": "all shards failed",
    "phase": "query",
    "grouped": true,
    "failed_shards": [
      {
        "shard": 0,
        "index": "my_stuff_index",
        "node": "MDueSn31TS2z0Lamo64zbw",
        "reason": {
          "type": "query_shard_exception",
          "reason": "failed to find geo_point field [location]",
          "index_uuid": "mO94yEsHQseQDFPkHjM6tA",
          "index": "my_stuff_index"
        }
      }
    ],
    "caused_by": {
      "type": "query_shard_exception",
      "reason": "failed to find geo_point field [location]",
      "index_uuid": "mO94yEsHQseQDFPkHjM6tA",
      "index": "my_stuff_index"
    }
  },
  "status": 400
}

我认为 null_value属性应该允许我插入文件而无需提交 location，同时我应该能够在同一“可选”字段中使用过滤器进行搜索。

为什么我无法过滤该“可选”字段？我该怎么办？

编辑:

要使用python重现此问题，请在从命令行执行 curl / jq操作之前，运行以下代码段。

python代码取决于此: pip install elasticsearch==5.4.0。

from elasticsearch import Elasticsearch
from elasticsearch import helpers

my_docs = [
    {"xyz": "foo", "location": {"lat": 0.0, "lon": 0.0}},
    {"xyz": "bar", "location": {"lat": 50.0, "lon": 50.0}}
]

es = Elasticsearch([{'host': 'localhost', 'port': 9200}])

index_mapping = '''
{
  "mappings":{
    "my_stuff_type":{
      "properties":{
        "location": {
          "type": "geo_point",
          "null_value": -1.0
        }
      }
    }
  }
}'''

es.indices.create(index='my_stuff_index', ignore=400, body=index_mapping)

helpers.bulk(es, my_docs, index='my_stuff_index', doc_type='my_stuff_type')

Answer 1

如@Val所说，您应该更改映射。如果以这种方式定义位置字段:

    "location": {
      "type": "geo_point"
    }

您可以将 lan和 lon索引为两个不同的子字段-无需按我显示的那样在映射中声明它们-如文档中所述- look here