Elasticsearch分析百分比

使用ES 1.7.3，无法基于两个不同聚合的结果来计算数据，但是，在ES
2.0中，可以使用管道聚合来完成此 *** 作。

但是，您要问的内容并不太复杂，无法在客户端使用1.7.3进行。如果使用下面的查询，您将获得获得期望数字所需要的一切：

POST components/_search{   "size": 0,   "aggs": {      "total_duration": {         "sum": { "field": "duration"         }      },      "components": {         "terms": { "field": "component"         },         "aggs": { "duration_sum": {    "sum": {       "field": "duration"    } }         }      }   }}

结果将如下所示：

{   "took": 1,   "timed_out": false,   "_shards": {      "total": 5,      "successful": 5,      "failed": 0   },   "hits": {      "total": 4,      "max_score": 0,      "hits": []   },   "aggregations": {      "total_duration": {         "value": 44      },      "components": {         "doc_count_error_upper_bound": 0,         "sum_other_doc_count": 0,         "buckets": [ {    "key": "a",    "doc_count": 2,    "duration_sum": {       "value": 15    } }, {    "key": "b",    "doc_count": 1,    "duration_sum": {       "value": 27    } }, {    "key": "c",    "doc_count": 1,    "duration_sum": {       "value": 2    } }         ]      }   }}

现在，您需要做的只是以下内容。我正在使用Javascript，但是您可以使用任何其他可以读取JSON的语言来执行此 *** 作。

var response = ...the JSON response above...var total_duration = response.aggregations.total_duration.value;var total_docs = response.hits.total;response.aggregations.components.buckets.forEach(function(comp_stats) {    // total duration for the component    var total_duration_comp = comp_stats.duration_sum.value;    // percentage duration of the component    var perc_duration_comp = total_duration_comp / total_duration * 100;    // percentage documents for the component    var perc_doc_comp = comp_stats.doc_count / total_docs * 100;});