0

所以我这里有个问题...

我正在使用chewyruby​​ gem 与 Elasticsearch 进行通信

=> #<Chewy::SnippetPagesIndex::Query:0x007f911c6b1610
 @_collection=nil,
 @_fully_qualified_named_aggs={"chewy::snippetpagesindex"=>{"chewy::snippetpagesindex::snippetpage"=>{}}},
 @_indexes=[Chewy::SnippetPagesIndex],
 @_named_aggs={},
 @_request=nil,
 @_response=nil,
 @_results=nil,
 @_types=[],
 @criteria=
  #<Chewy::Query::Criteria:0x007f911c6b1458
   @aggregations=
    {:group_by=>{:terms=>{:field=>"seo_area.suburb.id", :order=>{:_count=>"asc"}}, :aggs=>{:by_top_hit=>{:top_hits=>{:size=>10}}}}},
   @facets={},
   @fields=[],
   @filters=
    [{:geo_distance=>{:distance=>"100km", "seo_area.suburb.coordinates"=>"-27.9836052, 153.3977354"}},
     {:bool=>
       {:must_not=>[{:terms=>{:id=>[1]}}, {:terms=>{"seo_area.suburb.id"=>[5559]}}],
        :must=>[{:term=>{:path_category=>"garden-services"}}, {:term=>{:status=>"active"}}, {:exists=>{:field=>"path_area"}}],
        :should=>[]}}],
   @options=
    {:query_mode=>:must,
     :filter_mode=>:and,
     :post_filter_mode=>:and,
     :preload=>
      {:scope=>
        #<Proc:0x007f911c6b1700@/Users/serviceseeking/Work/serviceseeking/engines/seo/app/concepts/seo/snippet_page/twins/search.rb:45 (lambda)>},
     :loaded_objects=>true},
   @post_filters=[],
   @queries=[],
   @request_options={},
   @scores=[],
   @script_fields={},
   @search_options={},
   @sort=[{:_geo_distance=>{"seo_area.suburb.coordinates"=>"-27.9836052, 153.3977354", :order=>"asc", :unit=>"km"}}],
   @suggest={},
   @types=[]>,
 @options={}>

我正在使用 Elasticsearch 聚合，因此查询/搜索阶段的任何排序都将在访问聚合时消失。

我一直在经过的是这个...

     aggs: {
        by_seo_area_suburb_id: {
          terms: {
            field: "seo_area.suburb.id",
            size: 10,
            order: { by_distance: "desc" }
          },
          aggs: {
            by_top_hit: {
              top_hits: { size: 10 }
            },
            by_distance: {
              geo_distance: {
                field: "seo_area.suburb.coordinates",
                origin: "52.3760, 4.894",
                ranges: [
                  { from: 0, to: 1 },
                  { from: 1, to: 2 }
                ]
              }
            }
          }
        }
      }

虽然我收到了这个错误......

[500] {"error":{"root_cause":[{"type":"aggregation_execution_exception","reason":"Invalid terms aggregation order path [by_distance]. Terms buckets can only be sorted on a sub-aggregator path that is built out of zero or more single-bucket aggregations within the path and a final single-bucket or a metrics aggregation at the path end."}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"snippet_pages","node":"srrlBssmSEGsqpZnPnOJmA","reason":{"type":"aggregation_execution_exception","reason":"Invalid terms aggregation order path [by_distance]. Terms buckets can only be sorted on a sub-aggregator path that is built out of zero or more single-bucket aggregations within the path and a final single-bucket or a metrics aggregation at the path end."}}]},"status":500}

简单地说...

术语桶只能在子聚合器路径上排序，该路径由路径内的零个或多个单桶聚合以及路径末端的最终单桶或度量聚合构建而成。

有任何想法吗？

4

1 回答 1

0

你有这样的桶：

1-2

2-3

4-5

等等。这些不是具有自然顺序的单一值桶。这就是异常告诉你的。因此，您需要一些东西将其分解为单个值。

即使您可以按此订购。你为什么要？所有距离在 1 和 2 之间的都将具有相同的比较值，并且它们的顺序将是未定义的。如果它足以让您知道哪些是 0-1 和 1-2 等等，只需翻转聚合顺序即可。首先取距离并对术语进行子聚合。

总而言之，我认为您有一个用例，其中聚合不是您想要的，因为请考虑以下两个文档：

{ name: "peter", location: [0,0] }
{ name: "peter", location: [100,0] }

显然，两个彼得都会在聚合方面融为一体。但是它们有两个不同的位置，因此距离（几乎）总是不同的。那么如何按距离订购彼得？一旦您聚合一个字段，所有其他字段或多或少都会与它分离，并且您不能为此使用其他字段。

所以。如果你想要这样的东西，你很可能必须通过普通搜索。看看如何按距离对搜索进行排序：

https://www.elastic.co/guide/en/elasticsearch/guide/current/sorting-by-distance.html

于 2016-11-17T14:50:22.797 回答