为什么将Elasticsearch“ not_analyzed”字段拆分为术语？

通过运行以下命令验证映射是否已真正设置：

curl localhost:9200/my_index/_mapping?pretty=true

创建索引的命令似乎不正确。它不应包含

"index" : {

curl -XPUT localhost:9200/my_index -d '{  "settings": {    "number_of_shards": 5,    "number_of_replicas": 2  },  "mappings": {    "my_type": {      "_all": {        "enabled": false      },      "_source": {        "compressed": true      },      "properties": {        "my_field": {          "type": "string",          "index": "not_analyzed"        }      }    }  }}'