我在Elasticsearch中嵌套聚合有一些问题。我有一个嵌套的字段映射:Elasticsearch。嵌套字段上的术语聚合具有重复值
POST my_index/ my_type/_mapping
{
"properties": {
"name": {
"type": "keyword"
},
"nested_fields": {
"type": "nested",
"properties": {
"key": {
"type": "keyword"
},
"value": {
"type": "keyword"
}
}
}
}
}
然后,添加一个文件索引:
POST my_index/ my_type
{
"name":"object1",
"nested_fields":[
{
"key": "key1",
"value": "value1"
},
{
"key": "key1",
"value": "value2"
}
]
}
正如你看到的,在我的嵌套数组我有两个项目,其中有类似key
领域,但不同value
字段。然后我想做出这样的查询:
GET/my_index/my_type/_search
{
"query": {
"nested": {
"path": "nested_fields",
"query": {
"bool": {
"must": [
{
"term": {
"nested_fields.key": {
"value": "key1"
}
}
},
{
"terms": {
"nested_fields.value": [
"value1",
"value2"
]
}
}
]
}
}
}
},
"aggs": {
"agg_nested_fields": {
"nested": {
"path": "nested_fields"
},
"aggs": {
"agg_nested_fields_key": {
"terms": {
"field": "nested_fields.key",
"size": 10
}
}
}
}
}
}
正如你看到的,我想找到的所有文件,其中至少有一个物体在nested_field
数组,key
属性等于key1
并提供一个值(value1
或value2
)。然后我想通过nested_fields.key
将创建的文档分组。但是,我有这样的反应
{
"took": 13,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 0.87546873,
"hits": [
{
"_index": "my_index",
"_type": "my_type",
"_id": "AVuLNXxiryKmA7VEwOfV",
"_score": 0.87546873,
"_source": {
"name": "object1",
"nested_fields": [
{
"key": "key1",
"value": "value1"
},
{
"key": "key1",
"value": "value2"
}
]
}
}
]
},
"aggregations": {
"agg_nested_fields": {
"doc_count": 2,
"agg_nested_fields_key": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "key1",
"doc_count": 2
}
]
}
}
}
}
正如你从反应看,我有一重击(这是正确的),但该文件在聚集(见doc_count: 2
)计算两次,因为它有两个项目与“ key1'的值在nested_fields
数组中。我如何在聚合中获得正确的计数?
这是正确的计数,因为每个嵌套元素本身就是一个文档。所以你真的有两个嵌套的文件,它们的key1和'value1'或'value2'都是它们的值。 – Val
是的,我需要这个。我如何解决这个问题? – Stalso
是否有帮助https://stackoverflow.com/a/27578607/7379424? –