Elasticsearch joda时间格式错误

Question

使用logstash我试图在elasticsearch中以json格式导入日期。
我使用以下映射：

   "time_stamp": {
            "type": "date",
            "format": "dd-MMM-yy HH:mm:ss aa zzz"
          }

并尝试导入09-Dec-16 6:15:00 PM GMT并获得以下错误。

[2017-01-12T15:41:34,501][WARN ][logstash.outputs.elasticsearch] Failed action. {
  : status=>400,
  : action=>[
    "index",
    {
      : _id=>nil,
      : _index=>"energy-2017.01.12",
      : _type=>"pam1",
      : _routing=>nil
    },
    2017-01-12T15: 41: 34.397Z%{
      host
    }%{
      message
    }
  ],
  : response=>{
    "index"=>{
      "_index"=>"energy-2017.01.12",
      "_type"=>"pam1",
      "_id"=>"AVmTV2GcrRd08tiPC0IZ",
      "status"=>400,
      "error"=>{
        "type"=>"mapper_parsing_exception",
        "reason"=>"failed to parse [time_stamp]",
        "caused_by"=>{
          "type"=>"illegal_argument_exception",
          "reason"=>"Invalid format: \"09-Dec-16 6:15:00 PM GMT\" is malformed at \"-Dec-16 6:15:00 PM GMT\""
        }
      }
    }
  }

我收到此错误的任何想法？