elasticsearch。_Score在聚合中为null。为什么？

Z时代
2024-01-10
分类：问答

我使用ES v 1.7。ES仅在“命中”部分返回_score，但是我对“命中”不感兴趣，我需要从响应的“聚合”部分中

。为什么ES会喜欢这样，以及如何解决？

{
    "size": 1,
        "query": {
            "bool": {
                "must": [
                    { "match": {"_all": {"query": "test","operator": "and","fuzziness": "2"}}}
                ],
                "should": [
                    { "multi_match" : {
                            "query":      "test"
                            ,"type":       "best_fields"
                            ,"fields":     ["ObjectData.PRTNAME","ObjectData.EXTERNALID","ObjectData.contactList.VALUE","*SERIES","*NUMBER","ObjectData.INN"]
                            ,"operator":   "or"
                            ,"boost": 3
                    }}
                ]
            } 
        },   
  "aggs": {
    "byObjectID": {
      "terms": {"field": "ObjectID"},
      "aggs": {
        "latestVer": {
          "top_hits": {
            "sort": [{"creationDate": { "order": "desc" }}]
            ,"_source": { "include": ["ObjectData.BRIEFNAME", "creationDate", "ObjectID" ]}
            ,"size": 1
          }
        }
      }
    }
  }
}

{ "took": 16, "timed_out": false, "_shards": { "total": 5, "successful": 5, "failed": 0 }, "hits": { "total": 87, "max_score": 5.3479624, "hits": [ { "_index": "crmws", "_type": "participant", "_id": "AVFtAkIcSH3HWHh0wIkd", "_score": 5.3479624, "_source": { "mostRecentVersion": null, "UserLogin": "ap", "creationDate": "2015-12-04T12:40:43.292Z", "_id": null, "ObjectID": 26784418, "EventID": null, "version_id": 3798, "ObjectTypeId": null, "ObjectData": {...}, "ObjectTypeSysName": "participant", "versionNumber": null } }] }, "aggregations": {"byObjectID": { "doc_count_error_upper_bound": 0, "sum_other_doc_count": 0, "buckets": [ { "key": 26745417, "doc_count": 21, "latestVer": {"hits": { "total": 21, "max_score": null, "hits": [ { "_index": "crmws", "_type": "participant", "_id": "AVFtQCCtSH3HWHh0wItF", "_score": null, "_source": { "creationDate": "2015-12-04T13:48:17.949Z", "ObjectID": 26745417, "ObjectData": {"BRIEFNAME": "Верный-Преверный В. В."} }, "sort": [1449236897949] }] }} }, ... ] }} }

回答：

由于您正在使用排序，因此您需要为要计算的分数显式设置“

track_scores ”。

例：

{
    "size": 1,
        "query": {
            "bool": {
                "must": [
                    { "match": {"_all": {"query": "test","operator": "and","fuzziness": "2"}}}
                ],
                "should": [
                    { "multi_match" : {
                            "query":      "test"
                            ,"type":       "best_fields"
                            ,"fields":     ["ObjectData.PRTNAME","ObjectData.EXTERNALID","ObjectData.contactList.VALUE","*SERIES","*NUMBER","ObjectData.INN"]
                            ,"operator":   "or"
                            ,"boost": 3
                    }}
                ]
            } 
        },   
  "aggs": {
    "byObjectID": {
      "terms": {"field": "ObjectID"},
      "aggs": {
        "latestVer": {
          "top_hits": {
            "sort": [{"creationDate": { "order": "desc" }}]
            ,"_source": { "include": ["ObjectData.BRIEFNAME", "creationDate", "ObjectID" ]}
            ,"size": 1,
            'track_scores" : 1
          }
        }
      }
    }
  }
}