ES中search返回参数讲解

took：表示整个搜索请求花费了多少毫秒
hits.total：本次搜索，返回了几条结果
hits.max_score：本次搜索的所有结果中，最大的相关度分数是多少。每一条document对于search的相关度，越相关，_score分数越大，排位越靠前
hits.hits：默认查询出前10条数据，完整数据，_score降序排序
shards：shard fail的条件,不影响其他shard。默认情况下来说，一个搜索请求，会打到一个index的所有primary shard上去，当然了，每个primary shard都可能会有一个或多个replic shard，所以请求也可以到primary shard的其中一个replica shard上去。
timeout：默认无timeout，latency平衡completeness，手动指定timeout，timeout查询执行机制

{
  "took": 3,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 2342,
    "max_score": 24.293804,
    "hits": [
      {
        "_index": "h_cv",
        "_type": "cv",
        "_id": "181",
        "_score": 24.293804,
        "_source": {
          "p_id": "0146000008",
          "s_date": "2017-04-01",
          "e_date": "2019-09-17",
          "c_loc": "海南",
          "c_unit": "海南省委政法委员会",
          "c_dep": null,
          "c_ide": "副秘书长"
        }
      },
      {
        "_index": "h_cv",
        "_type": "cv",
        "_id": "261",
        "_score": 24.293804,
        "_source": {
          "p_id": "0146000014",
          "s_date": "2016-09-01",
          "e_date": "2019-09-17",
          "c_loc": "海南",
          "c_unit": "海南省委政法委员会",
          "c_dep": null,
          "c_ide": "委员"
        }
      }
    ]
  }
}