在“fields”中指定时，ElasticSearch忽略名为“tags”的字段

Question

$ curl -XPOST 'http://localhost:9200/products/_search?pretty' -d '{  "query": {"match_all": {} }, "fields": ["tags", "id", "slug"], "size": 2}'
{
  "took" : 4,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 321826,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "products",
      "_type" : "products",
      "_id" : "39969794",
      "_score" : 1.0,
      "fields" : {
        "id" : [ "39969794" ],
        "slug" : [ "slug-39969794" ]
      }
    }, {
      "_index" : "products",
      "_type" : "products",
      "_id" : "21296413",
      "_score" : 1.0,
      "fields" : {
        "id" : [ "21296413" ],
        "slug" : [ "slug-21296413" ]
      }
    } ]
  }
}

我使用的是ES Version1.1.2(Lucene4.7)。

Answer 1

标记不是ES保留字。所以那不是你的问题。

您的标记是原子类型（数字、字符串或布尔值）的数组吗？还是一个对象数组？

字段仅适用于叶节点。所以“fields”:[“tags”]应该可以很好地处理字符串数组，但对于tag对象数组则会失败。