elasticsearch之explain的使用

explain查看怎么计算得分的，format将json格式结果转为yaml展示

POST tlsmz/_search?format=yaml
{
  "explain": true, 
  "query": {
    "bool": {
      "must": [
        {
          "term": {
            "fz.keyword": {
              "value": "南昌西"
            }
          }
        },
        {
          "bool": {
            "should": [
              {
                "match": {
                  "dz": "长沙"
                }
              }
            ]
          }
        }
      ]
    }
  }
}

通过/index/_explain/id 可以看到我们的文档是否被匹配，为什么匹配/不匹配。详细的原因

GET tlsmz/_explain/A53AC90D8F3941B8E055000000000001
{
  "query": {
    "bool": {
      "must": [
        {
          "term": {
            "fz.keyword": {
              "value": "南昌西"
            }
          }
        },
        {
          "bool": {
            "should": [
              {
                "match": {
                  "dz": "长沙"
                }
              }
            ]
          }
        }
      ]
    }
  }
}

{
  "_index" : "tlsmz",
  "_type" : "_doc",
  "_id" : "A53AC90D8F3941B8E055000000000001",
  "matched" : false,
  "explanation" : {
    "value" : 0.0,
    "description" : "Failure to meet condition(s) of required/prohibited clause(s)",
    "details" : [
      {
        "value" : 0.0,
        "description" : "no match on required clause (fz.keyword:南昌西)",
        "details" : [
          {
            "value" : 0.0,
            "description" : "no matching term",
            "details" : [ ]
          }
        ]
      },
      {
        "value" : 0.0,
        "description" : "no match on required clause (dz:长沙)",
        "details" : [
          {
            "value" : 0.0,
            "description" : "no matching term",
            "details" : [ ]
          }
        ]
      }
    ]
  }
}