ElasticSearch多聚

Question

我想知道是否有可能检索不属于响应的文档的聚合键/计数器。我指的是放在sum_other_doc_count字段中的文档。

我的聚合代码如下：

AggregationBuilder agg = AggregationBuilders.terms("AGG_1").field("field1")
            .subAggregation(AggregationBuilders.terms("AGG_2").field("field2")
                    .subAggregation(AggregationBuilders.terms("AGG_3").field("field3")
                            .subAggregation(AggregationBuilders.terms("AGG_4").field("field4"))));

我在AGG_2上有5个不属于响应的文档，但我和其他文档一样需要它们。

"AGG_1": {
     "doc_count_error_upper_bound": 0,
     "sum_other_doc_count": 0,
     "buckets": [
        {
           "key": "404",
           "doc_count": 3506,
           "AGG_2": {
              "doc_count_error_upper_bound": 0,
              "sum_other_doc_count": 0,
              "buckets": [
                 {
                    "key": "OK",
                    "doc_count": 1206,
                    "AGG_3": {
                       "doc_count_error_upper_bound": 0,
                       "sum_other_doc_count": 5,
                       "buckets": [ ...

谢谢你的帮忙!

Answer 1

您可以为size设置一个不同的terms aggregations值，以指定每个桶要获取多少桶

{
    "aggs" : {
        "AGG_1" : {
            "terms" : {
                "field" : "field1",
                "size" : 20 // override the number of buckets to return
            }
        }
    }
}