elasticsearch - Elasticsearch 5.6聚合平均而言并非所有存储桶都返回

Question

我在ES 5.6上有以下查询:

{
  "size": 0,
  "query": {
    "exists": {
      "field": "description.keyword"
    }
  },
  "aggs": {
    "group_by_source": {
      "terms": {
        "field": "flux.source.idname.keyword",
        "size": 1000
      },
      "aggs": {
        "description_avg": {
          "avg": {
            "script": {
              "lang": "painless",
              "source": "doc['description.keyword'].toString().length()"
            }
          }
        }
      }
    }
  }
}

这对我想做的事情有效(按源显示描述长度平均)，但结果只能看到6个存储桶:

知道为什么吗？
提前致谢，
朱利安

Answer 1

{ "size": 0, "query": {"exists": {"field": "description.keyword"} }, "aggs": {"group_by_source": {"terms": {"field": "flux.source.name.keyword","size": 1000},"aggs": {"description_avg": {"avg": {"script": {"lang": "painless","source": "doc['description.keyword'].toString().length()"}}}}} } }