Elasticsearch Java API遷移形式TermsFacetBuilder with AggregationBuilders

Question

我正在從ES 1.7遷移到5.2並重構以下代碼。

ES 1.7

public void prepare(final SearchRequestBuilder searchRequestBuilder) { 
     final TermsFacetBuilder labelsFacet = FacetBuilders 
       .termsFacet("labels") 
       .field("labels"); 
     searchRequestBuilder.addFacet(labelsFacet); 
     searchRequestBuilder.setFrom(start); 
     searchRequestBuilder.setSize(size); 
    } 

與ES 5.2

public void prepare(final SearchRequestBuilder searchRequestBuilder) { 
     TermsAggregationBuilder aggregation = AggregationBuilders.terms("labels").field("labels"); 
     searchRequestBuilder.addAggregation(aggregation); 
     searchRequestBuilder.setFrom(start); 
     searchRequestBuilder.setSize(size); 
    } 

當我火了搜索查詢，我收到以下異常

nested: IllegalArgumentException[Fielddata is disabled on text fields by default. Set fielddata=true on [labels] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory.] 

我也試着設置上SearchRequestBuilder的fieldDocValue但沒有運氣。

Answer 1

根據錯誤消息，您需要在您的映射中使用enable fielddata。

例如，以下是text字段中使用fielddata=true的新映射。

PUT my_index/_mapping/my_type 
{ 
    "properties": { 
    "my_field": { 
     "type":  "text", 
     "fielddata": true 
    } 
    } 
}