无法为弹性搜索索引中的字段指定类型

Question

我正在使用logstash，弹性搜索和Kibana。 输入文件是.csv格式

我首先通过Dev Tools＆gt;创建了以下映射。控制台在Kibana：

PUT /defects
{
   "mappings": {
      "type_name":{ 
        "properties" : {
            "Detected on Date" :{
                "type": "date"
            },
           "DEFECTID": {
                "type": "integer"
            }
      }
    } 
  }
 }

成功了。然后创建了一个logstash conf文件并运行它。

这是我的logstash.conf文件：

input {
    file {
        path => ["E:/d drive/ELK/data/sample.csv"]
        start_position => "beginning"
        sincedb_path => "/dev/nul"
    }
} 
filter {
  csv {
    columns => ["DEFECTID","Detected on Date","SEVERITY","STATUS"]
separator => ","
}
} 
output {
    elasticsearch {
     action => "index"
    hosts => "localhost:9200"
    manage_template => false
    template_overwrite => true
    index => "defects"
   }
 }

我在Kibana中创建了索引模式缺陷*。当我查看字段的类型时，所有字符都显示为字符串。请告诉我我失踪的地方