doc_values
按列存儲,按docId排序,在query階段使用,直接根據docId獲取具體field的value,用來排序,聚合等。html
stored field
按文檔存儲,按docId排序,一條文檔全部的stored field都存在一塊兒,在fetch階段使用。apache
https://www.elastic.co/guide/en/elasticsearch/guide/master/docvalues.html
http://lucene.apache.org/core/8_3_0/core/org/apache/lucene/codecs/lucene50/Lucene50StoredFieldsFormat.htmlelasticsearch