elasticsearch - 在不同映射中具有相同名称的字段上的Elasticsearch(2.3.2) “not_analyzed”

Question

如果执行以下操作，则会发生错误:

创建具有两个映射的索引

这两个映射具有相同的字段(在本例中为thing)

thing字段中只有一个具有"index": "not_analyzed"

可以通过以下调用完成以上操作:

DELETE /test/

PUT /test/
{
  "mappings": {
    "product": {
      "properties": {
        "thing": {
          "type": "string",
          "index": "not_analyzed"
        }
      }
    },
    "page": {
      "properties": {
        "thing": {
          "type": "string"
        }
      }
    }
  }
}

然后将发生以下错误:

# DELETE /test/
{ ... }

# PUT /test/
{
   "error": {
      "root_cause": [
         {
            "type": "mapper_parsing_exception",
            "reason": "Failed to parse mapping [page]: Mapper for [thing] conflicts with existing mapping in other types:\n[mapper [thing] has different [index] values, mapper [thing] has different [omit_norms] values, cannot change from disable to enabled, mapper [thing] has different [analyzer], mapper [thing] is used by multiple types. Set update_all_types to true to update [omit_norms] across all types., mapper [thing] is used by multiple types. Set update_all_types to true to update [search_analyzer] across all types., mapper [thing] is used by multiple types. Set update_all_types to true to update [search_quote_analyzer] across all types.]"
         }
      ],
      "type": "mapper_parsing_exception",
      "reason": "Failed to parse mapping [page]: Mapper for [thing] conflicts with existing mapping in other types:\n[mapper [thing] has different [index] values, mapper [thing] has different [omit_norms] values, cannot change from disable to enabled, mapper [thing] has different [analyzer], mapper [thing] is used by multiple types. Set update_all_types to true to update [omit_norms] across all types., mapper [thing] is used by multiple types. Set update_all_types to true to update [search_analyzer] across all types., mapper [thing] is used by multiple types. Set update_all_types to true to update [search_quote_analyzer] across all types.]",
      "caused_by": {
         "type": "illegal_argument_exception",
         "reason": "Mapper for [thing] conflicts with existing mapping in other types:\n[mapper [thing] has different [index] values, mapper [thing] has different [omit_norms] values, cannot change from disable to enabled, mapper [thing] has different [analyzer], mapper [thing] is used by multiple types. Set update_all_types to true to update [omit_norms] across all types., mapper [thing] is used by multiple types. Set update_all_types to true to update [search_analyzer] across all types., mapper [thing] is used by multiple types. Set update_all_types to true to update [search_quote_analyzer] across all types.]"
      }
   },
   "status": 400
}

有人可以解释为什么会这样吗？这是一个错误吗？

Answer 1

flex “类型”机制是虚拟的。意思是，在较低级别(= lucene)，索引的所有文档都是相同的“类型”。 flex “类型”划分仅通过添加“_type”字段并对其进行过滤来完成。这意味着您不能(在一个索引上)具有相同的field_name和不同的映射的2种类型-因为在较低级别上它们具有相同的类型并且彼此冲突!
您在“产品”类型中将“事物”定义为not_analyzed，在“页面”中将其定义为“字符串”，默认为“已分析”-这是一种不同的映射，会发生冲突!使它们两者相同或更改字段名称之一。