elasticsearch - 无法解析_doc类型:Elasticsearch 7.x中的映射错误

Question

尝试通过使用以下查询在Elasticsearch中创建索引

PUT company
{
  "mappings": {
    "employees": {
      "properties": {
        "id": {
          "type": "long"
        },
        "name": {
          "type": "text",
          "fields": {
            "keyword": {
              "type": "keyword",
              "ignore_above": 256
            }
          }
        },
        "birth": {
          "type": "date"
        },
        "addr": {
          "type": "text"
        }
      }
    }
  },
  "settings": {
    "index": {
      "number_of_shards": "5",
      "number_of_replicas": "1"
    }
  }
}

在Kibana仪表板中执行查询后出现以下错误
我认为有关天气的问题我给了一些错误的参数:

{
  "error" : {
    "root_cause" : [
      {
        "type" : "mapper_parsing_exception",
        "reason" : "Root mapping definition has unsupported parameters:  [employees : {properties={name={type=text, fields={keyword={ignore_above=256, type=keyword}}}, birth={type=date}, id={type=long}, addr={type=text}}}]"
      }
    ],
    "type" : "mapper_parsing_exception",
    "reason" : "Failed to parse mapping [_doc]: Root mapping definition has unsupported parameters:  [employees : {properties={name={type=text, fields={keyword={ignore_above=256, type=keyword}}}, birth={type=date}, id={type=long}, addr={type=text}}}]",
    "caused_by" : {
      "type" : "mapper_parsing_exception",
      "reason" : "Root mapping definition has unsupported parameters:  [employees : {properties={name={type=text, fields={keyword={ignore_above=256, type=keyword}}}, birth={type=date}, id={type=long}, addr={type=text}}}]"
    }
  },
  "status" : 400
}

Answer 1

根据此文件:

https://www.elastic.co/guide/en/elasticsearch/reference/current/removal-of-types.html

从Elasticsearch 7.x版开始不赞成使用映射类型。您可以放置​​映射而无需另外提及_doc。

PUT company
{
  "mappings": {
    "properties": {
      "id": {
        "type": "long"
      },
      "name": {
        "type": "text",
        "fields": {
          "keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      },
      "birth": {
        "type": "date"
      },
      "addr": {
        "type": "text"
      }
    }
  },
  "settings": {
     "index": {
         "number_of_shards": "5",
         "number_of_replicas": "1"
     }
  }
}

输出:

{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "index" : "company"
}

校验:

GET company/_mapping

输出:

{
  "company" : {
    "mappings" : {
      "properties" : {
        "addr" : {
          "type" : "text"
        },
        "birth" : {
          "type" : "date"
        },
        "id" : {
          "type" : "long"
        },
        "name" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        }
      }
    }
  }
}

我希望这会有所帮助，更容易理解，并且避免 _doc属性引起混淆。