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我是Elastic Search的新手。我想查找最近訪問的前10個唯一doc_id。如何根據ElasticSearch中的viewing_timestamp對桶結果進行排序？
我已經對doc_id進行了第一次聚合，並添加了子聚合來對每個組進行排序並獲得單個結果。現在我想分類這個桶。 我無法根據view_timestamp對存儲桶的結果進行排序。我如何在首次彙總時添加訂單？
我已經嘗試了其他解決堆棧溢出，但它不適合我。任何人都可以幫我解決這個問題嗎？
查詢
{
"query": {
"constant_score": {
"filter": {
"term": { "username": "[email protected]" }
}
}
},
"size":0,
"aggs":{
"title": {
"terms": {
"field": "doc_id",
"size":0
}
,
"aggs": {
"top": {
"top_hits": {
"sort": [
{
"viewed_timestamp": {
"order": "desc"
}
}
],
"size": 1
}
}
}
}
}
}
桶結果：
{
"aggregations": {
"title": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [{
"key": "b003",
"doc_count": 3,
"top_tag_hits": {
"hits": {
"total": 3,
"max_score": null,
"hits": [{
"_index": "visitedData",
"_type": "userdoc",
"_id": "AVak51Sp",
"_score": null,
"_source": {
"viewed_timestamp": "20160819T152359",
"content_type": "bp",
"title": "Data print",
"doc_id": "BP003"
},
"sort": [
1471620239000
]
}]
}
}
}, {
"key": "bp004",
"doc_count": 3,
"top_tag_hits": {
"hits": {
"total": 3,
"max_score": null,
"hits": [{
"_index": "visitedData",
"_type": "userdoc",
"_id": "AVak513Y8G",
"_score": null,
"_source": {
"viewed_timestamp": "20160819T152401",
"content_type": "bp",
"title": "Application Print",
"doc_id": "BP004"
},
"sort": [
1471620241000
]
}]
}
}
}]
}
}
}