ElasticSearch 7.4.2 Root mapping definition has unsupported parameters

新建索引

PUT /test2
{
  "settings": {
    "number_of_shards": 3,
    "number_of_replicas": 0
  },
  "mappings": {
    "user":{
      "properties":{
        "id":{
          "type":"long"
        },
        "title":{
          "type":"text",
          "analyzer":"ik_max_word"
        },
        "content":{
          "type":"text",
          "analyzer":"ik_max_word"
        },
        "postdate":{
          "type":"date"
        },
        "url":{
          "type":"text"
        }
      }
    }
  }
}

然后报错，Root mapping definition has unsupported parameters

{
  "error": {
    "root_cause": [
      {
        "type": "mapper_parsing_exception",
        "reason": "Root mapping definition has unsupported parameters:  [user : {properties={postdate={type=date}, id={type=long}, title={analyzer=ik_max_word, type=text}, content={analyzer=ik_max_word, type=text}, url={type=text}}}]"
      }
    ],
    "type": "mapper_parsing_exception",
    "reason": "Failed to parse mapping [_doc]: Root mapping definition has unsupported parameters:  [user : {properties={postdate={type=date}, id={type=long}, title={analyzer=ik_max_word, type=text}, content={analyzer=ik_max_word, type=text}, url={type=text}}}]",
    "caused_by": {
      "type": "mapper_parsing_exception",
      "reason": "Root mapping definition has unsupported parameters:  [user : {properties={postdate={type=date}, id={type=long}, title={analyzer=ik_max_word, type=text}, content={analyzer=ik_max_word, type=text}, url={type=text}}}]"
    }
  },
  "status": 400
}

查看官网示例后发现 7.4 默认不在支持指定索引类型，默认索引类型是_doc（隐含：include_type_name=false）。见官网：https://www.elastic.co/guide/en/elasticsearch/reference/current/removal-of-types.html#_typeless_apis_in_7_0

修改成：

PUT /test2
{
  "settings": {
    "number_of_shards": 3,
    "number_of_replicas": 0
  },
  "mappings": {
    "properties":{
      "id":{
        "type":"long"
      },
      "title":{
        "type":"text",
        "analyzer":"ik_max_word"
      },
      "content":{
        "type":"text",
        "analyzer":"ik_max_word"
      },
      "postdate":{
        "type":"date"
      },
      "url":{
        "type":"text"
      }
    }
  }
}

 成功

{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "index" : "test2"
}