"writer": {
                    "name": "kuduwriter",
                                       "parameter": {
                                                  "table": "table",
                                                 "master": "ip",
                                                "primaryKey": [
                                                {
                                                "index":0,
                                                "name": "key",
                                                "type":"string"
                                                }
                                                ],
                                                  "column": [
                                                    {
                                                        "index":1,
                                                        "name": "col1",
                                                        "type": "int"
                                                }
										],
                                         "encoding": "utf-8"
                                        }
                }
            }
        ]
    }
}