ElasticSearch 7.10.1报错Root mapping definition has unsupported parameters

新建索引时，报错Root mapping definition has unsupported parameters

PUT /cars
{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0
  },
  "mappings": {
    "transactions": {
      "properties": {
        "color": {
          "type": "keyword"
        },
        "make": {
          "type": "keyword"
        }
      }
    }
  }
}

{
  "error" : {
    "root_cause" : [
      {
        "type" : "mapper_parsing_exception",
        "reason" : "Root mapping definition has unsupported parameters:  [transactions : {properties={color={type=keyword}, make={type=keyword}}}]"
      }
    ],
    "type" : "mapper_parsing_exception",
    "reason" : "Failed to parse mapping [_doc]: Root mapping definition has unsupported parameters:  [transactions : {properties={color={type=keyword}, make={type=keyword}}}]",
    "caused_by" : {
      "type" : "mapper_parsing_exception",
      "reason" : "Root mapping definition has unsupported parameters:  [transactions : {properties={color={type=keyword}, make={type=keyword}}}]"
    }
  },
  "status" : 400
}

查看官网示例后发现 7.10.1 默认不再支持指定索引类型，默认索引类型是_doc（隐含：include_type_name=false）。参见官网

解决方法：添加?include_type_name=true后，索引添加成功

PUT /cars?include_type_name=true
{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0
  },
  "mappings": {
    "transactions": {
      "properties": {
        "color": {
          "type": "keyword"
        },
        "make": {
          "type": "keyword"
        }
      }
    }
  }
}

#! Deprecation: [types removal] Using include_type_name in create index requests is deprecated. The parameter will be removed in the next major version.
{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "index" : "cars"
}

提示include_type_name会在下一个主要版本被移除