Elasticsearchtop_hits聚合結果和doc_count不一樣

詢問

GET /someindex/_search
{
   "size": 0,
   "query": {
      "ids": {
         "types": [],
         "values": ["08a2","08a3","03a2","03a3","84a1"]
      }
   },
   "aggregations": {
      "498": {
         "terms": {
            "field": "holderInfo.raw",
            "size": 50
         },
         "aggregations": {
            "tops": {
               "top_hits": {
                  "_source": {
                     "includes": ["uid"]
                  }
               }
            }
         }
      }
   }
}

結果

{
   ...
   "hits": {
      "total": 5,
      "max_score": 0,
      "hits": []
   },
   "aggregations": {
      "498": {
         "doc_count_error_upper_bound": 0,
         "sum_other_doc_count": 0,
         "buckets": [
            {
               "key": "MATSUSHITA ELECTRIC INDUSTRIAL",
               "doc_count": 5,
               "tops": {
                  "hits": {
                     "total": 5,
                     "max_score": 1,
                     "hits": [
                        {
                           "_index": "someindex",
                           "_id": "03a3",
                           "_score": 1,
                           "_source": {
                              "uid": "03a3"
                           }
                        },
                        {
                           "_index": "someindex",
                           "_id": "08a2",
                           "_score": 1,
                           "_source": {
                              "uid": "08a2"
                           }
                        },
                        {
                           "_index": "someindex",
                           "_id": "84a1",
                           "_score": 1,
                           "_source": {
                              "uid": "84a1"
                           }
                        }
                     ]
                  }
               }
            }
         ]
      }
   }
}

“08a2”、“08a3”、“03a2”、“03a3”和“84a1”在holderInfo.raw欄位中都清楚地具有“MATSUSHITA ELECTRIC INDUSTRIAL”。

因此doc_count中有5個case，但是top_hits結果中只輸出了“03a3”、“08a2”、“84a1”，省略了“08a3”、“03a2”。

詢問

GET /someindex/_search
{
   "size": 0,
   "query": {
      "ids": {
         "types": [],
         "values": ["08a2","08a3","03a2","03a3","84a1"]
      }
   },
   "aggregations": {
      "498": {
         "terms": {
            "script": {
               "inline": "doc['holderInfo.raw'].value"
            },
            "size": 50
         }
      }
   }
}

結果

{
   ...
   "hits": {
      "total": 5,
      "max_score": 0,
      "hits": []
   },
   "aggregations": {
      "498": {
         "doc_count_error_upper_bound": 0,
         "sum_other_doc_count": 0,
         "buckets": [
            {
               "key": "MATSUSHITA ELECTRIC INDUSTRIAL",
               "doc_count": 3
            }
         ]
      }
   }
}

另外，與腳本聚合時省略了兩種情況。

我想知道為什么缺少某些 uid。

我處于必須使用 elasticsearch 2.2 版的情況。我想知道是舊版本的elasticsearch bug還是用戶的問題。

謝謝！

uj5u.com熱心網友回復：

默認情況下，top_hits聚合回傳前 3 個熱門搜索。你只需要增加 size 引數：

GET /someindex/_search
{
   "size": 0,
   "query": {
      "ids": {
         "types": [],
         "values": ["08a2","08a3","03a2","03a3","84a1"]
      }
   },
   "aggregations": {
      "498": {
         "terms": {
            "field": "holderInfo.raw",
            "size": 50
         },
         "aggregations": {
            "tops": {
               "top_hits": {
                  "size": 5,                   <---- add this
                  "_source": {
                     "includes": ["uid"]
                  }
               }
            }
         }
      }
   }
}

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