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Statistics 如何在ElasticSearch中从一组对象中获取平均值、最大值、最小值等

Statistics 如何在ElasticSearch中从一组对象中获取平均值、最大值、最小值等,statistics,elasticsearch,Statistics,elasticsearch,我使用elasticsearchdb来存储基准测试的数据 我需要计算和检索一组值的平均值、最大值、最小值等 我有点像: Index = "myindex" Type = "mytype" { "query" : { "match_all" : {} }, "facets" : { "statload_time" : { "statistical" : { "field" : "lo

我使用
elasticsearch
db来存储基准测试的数据

我需要计算和检索一组值的平均值、最大值、最小值等

我有点像:

Index = "myindex"

Type = "mytype"
{
    "query" : {
        "match_all" : {}
    },
    "facets" : {
        "statload_time" : {
            "statistical" : {
                "field" : "load_time"
            }
        },
        "statexec_time" : {
            "statistical" : {
                "field" : "execution_time"
            }
        },
        "statlog_time" : {
            "statistical" : {
                "field" : "log_time"
            }
        }
    }
}
每个对象有3个字段:

"load_time", "execution_time", "log_time".
然后我运行基准测试,数据库中填充了数百条记录。现在,我将检索每个字段的平均值、最大值和最小值

我应该运行什么查询?
我尝试使用统计方面,但我总是得到一个“未认可的令牌异常”…

您应该使用统计方面()

查询应该类似于:

Index = "myindex"

Type = "mytype"
{
    "query" : {
        "match_all" : {}
    },
    "facets" : {
        "statload_time" : {
            "statistical" : {
                "field" : "load_time"
            }
        },
        "statexec_time" : {
            "statistical" : {
                "field" : "execution_time"
            }
        },
        "statlog_time" : {
            "statistical" : {
                "field" : "log_time"
            }
        }
    }
}
正如医生所说:

统计数据包括计数、总数、平方和、平均值 (平均值)、最小值、最大值、方差和标准偏差

对两个文档编制索引后,查询的响应为:

{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 2,
    "max_score" : 1.0,
    "hits" : [ ]
  },
  "facets" : {
    "statload_time" : {
      "_type" : "statistical",
      "count" : 2,
      "total" : 7.0,
      "min" : 2.0,
      "max" : 5.0,
      "mean" : 3.5,
      "sum_of_squares" : 29.0,
      "variance" : 2.25,
      "std_deviation" : 1.5
    },
    "statexec_time" : {
      "_type" : "statistical",
      "count" : 2,
      "total" : 12.0,
      "min" : 5.0,
      "max" : 7.0,
      "mean" : 6.0,
      "sum_of_squares" : 74.0,
      "variance" : 1.0,
      "std_deviation" : 1.0
    },
    "statlog_time" : {
      "_type" : "statistical",
      "count" : 2,
      "total" : 16.0,
      "min" : 7.0,
      "max" : 9.0,
      "mean" : 8.0,
      "sum_of_squares" : 130.0,
      "variance" : 1.0,
      "std_deviation" : 1.0
    }
  }
}

我正在尝试此操作,但我得到了错误“Unrecognized token exception”,表示:{“error”:“MapperParsingException[未能解析];nested:JsonParseException[无法识别的令牌'load_time':应为('true'、'false'或'null')@CarmineGiangregorio您可以发布映射吗?