elasticsearch 5嵌套术语聚合不起作用

Question

我的索引中有一个嵌套类型映射：

  "actors": {
            "type": "nested",
            "properties": {
              "actor": {
                "type": "nested",
                "properties": {
                  "actor_full_name": {
                    "type": "text",
                    "fields": {
                      "keyword": {
                        "type": "keyword",
                        "ignore_above": 256
                      }
                    }
                  }
                }
              }
            }
          }

当我看到数据时，它看起来没问题

请求

 GET /test_index/film/_search
    {
      "size": 100,
      "_source": "actors.actor.actor_full_name"
    }

给我这个答案：

  "actors": {
            "actor": [
              {
                "actor_full_name": "Antonio BANDERAS"
              },
              {
                "actor_full_name": "Diane VENORA"
              },
              {
                "actor_full_name": "Omar SHARIF"
              },
              {
                "actor_full_name": "Vladimir KULICH"
              }
            ]
          },
...

我正在尝试在actor_full_name字段

上执行nested aggregation request

我正在尝试此请求：

POST /test_index/film/_search
{
  "size": 0,
  "aggs": {
    "actor_nested_agg_code": {
      "nested": {
        "path": "actors"
      },
      "aggs": {
        "code_actor_agg": {
          "terms": {
            "field": "actor.actor_full_name.keyword",
            "size": 100
          }
        }
      }
    }
  }
}

不幸的是，它似乎给了我一个incorect aswere：

 "aggregations": {
    "actor_nested_agg_code": {
      "doc_count": 1807,
      "code_actor_agg": {
        "doc_count_error_upper_bound": 0,
        "sum_other_doc_count": 0,
        "buckets": []
      }
    }
  }

你看到我做错了什么以及如何解决它吗？

Answer 1

你要么也不想让actors嵌套，要么你忽略了那里有两个nested字段：

{
  "size": 0,
  "aggs": {
    "actor_nested_agg_code": {
      "nested": {
        "path": "actors"
      },
      "aggs": {
        "second_nested_actor": {
          "nested": {
            "path": "actors.actor"
          },
          "aggs": {
            "code_actor_agg": {
              "terms": {
                "field": "actors.actor.actor_full_name.keyword",
                "size": 100
              }
            }
          }
        }
      }
    }
  }
}