Elasticsearch直方图聚合

Question

在Elasticsearch的文档中认为这行不通吗，我错了吗？
此功能将简化我的很多工作。

参考：https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-histogram-aggregation.html
ES版本：7.9.1。
机器：Ubuntu 18.04

PUT metrics_index/_doc/1
{
  "network.name" : "net-1",
  "latency_histo" : {
      "values" : [1, 3, 8, 12, 15],
      "counts" : [3, 7, 23, 12, 6]
   }
}

PUT metrics_index/_doc/2
{
  "network.name" : "net-2",
  "latency_histo" : {
      "values" : [1, 6, 8, 12, 14],
      "counts" : [8, 17, 8, 7, 6]
   }
}

POST /metrics_index/_search?size=0
{
  "aggs": {
    "latency_buckets": {
      "histogram": {
        "field": "latency_histo",
        "interval": 5
      }
    }
  }
}

这将返回：

{
  "took": 2,
  "timed_out": false,
  "_shards": {
    "total": 1,
    "successful": 1,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": {
      "value": 2,
      "relation": "eq"
    },
    "max_score": null,
    "hits": []
  },
  "aggregations": {
    "latency_buckets": {
      "buckets": []
    }
  }
}

可以请您确认吗？