logstash 字段类型转换后 需要刷新

filter {
    grok {
        match => [
             "message" , "\s*%{IPORHOST:clientip}\s+\-\s+\-\s+\[%{HTTPDATE:time}\]\s+\"%{WORD:verb}\s+(?<api>(\S+))\?.*\s+HTTP/%{NUMBER:httpversion}\"\s+%{NUMBER:http_status_code}\s+%{NUMBER:bytes}\s+(%{BASE16FLOAT:request_time})\s+%{IPORHOST:remoteip}",
              "message" ,"\s*%{IPORHOST:clientip}\s+\-\s+\-\s+\[%{HTTPDATE:time}\]\s+\"%{WORD:verb}\s+(?<api>(\S+))\s+HTTP/%{NUMBER:httpversion}\"\s+%{NUMBER:http_status_code}\s+%{NUMBER:bytes}\s+(%{BASE16FLOAT:request_time})\s+%{IPORHOST:remoteip}",
             "message" ,"\s*%{IPORHOST:clientip}\s+\-\s+\-\s+\[%{HTTPDATE:time}\]\s+\"%{WORD:verb}\s+(?<api>(\S+))\s+HTTP/%{NUMBER:httpversion}\"\s+%{NUMBER:http_status_code}\s+\-\s+(%{BASE16FLOAT:request_time})\s+%{IPORHOST:remoteip}"
        ]
    }
        mutate {
                        convert => [ "request_time", "float"]
                       add_field =>["response_time","%{request_time}"]
                        remove_field =>["request_time"]

                }
   date {
        match => ["time", "dd/MMM/yyyy:HH:mm:ss Z"]
    }

}