elasticsearch - Elasticsearch sum_bucket，从结果中剥离中间聚合

Question

我有以下查询

我执行第一项聚合，该聚合返回大量存储桶

然后在该存储桶上执行指标聚合(
例子)

，最后是sum_bucket聚合

当我运行此查询时，
输出包含所有中间my_huge_bucket.my_huge_bucket_metric结果，但我只对sum_bucket度量感兴趣。

有没有办法从结果中去除中间聚合？

{
  "size": 0,
  "aggs": {
    "my_sum_bucket": {
      "sum_bucket": {
        "buckets_path": "my_huge_bucket.my_huge_bucket_metric"
      }
    },
    "my_huge_bucket": {
      "terms": {
        "field": "some_field",
        "size": 0
      },
      "aggs": {
        "my_huge_bucket_metric": {
          "avg": {
            "field": "some_field"
          }
        }
      }
    }
  }

}

Answer 1

刚刚发现关于filter_path选项
正是我想要的

https://www.elastic.co/guide/en/elasticsearch/reference/2.3/common-options.html#_response_filtering