Elastic spark connector not able map longitude ,latitude values to geo_type

Elastic Stack Elasticsearch
6

{

"state": "open",
"settings": {
    "index": {
        "mappings": {
            "sensorinfo": {
                "properties": {
                    "creation_time": {
                        "format": "strict_date_optional_time||epoch_millis",
                        "type": "date"
                    },
                    "location": {
                        "type": "geo_point"
                    },
                    "engine_rpm": {
                        "type": "float"
                    },
                    "timestamp_hour": {
                        "format": "strict_date_optional_time||epoch_millis",
                        "type": "date"
                    },
                    "device_id": {
                        "type": "string",
                        "analyzer": "analyzer-name"
                    },
                    "vehicle_id": {
                        "type": "string",
                        "analyzer": "analyzer-name"
                    }
                }
            }
        },
        "number_of_shards": "1",
        "creation_date": "1474525784322",
        "analysis": {
            "analyzer": {
                "analyzer-name": {
                    "filter": "lowercase",
                    "type": "custom",
                    "tokenizer": "keyword"
                }
            }
        },
        "number_of_replicas": "1",
        "uuid": "Thj63TjXTMG4F8piliIP-g",
        "version": {
            "created": "2030599"
        }
    }
},
"mappings": {
    "sensorinfo": {
        "properties": {
            "creation_time": {
                "format": "strict_date_optional_time||epoch_millis",
                "type": "date"
            },
            "timestamp_hour": {
                "format": "strict_date_optional_time||epoch_millis",
                "type": "date"
            },
            "device_id": {
                "type": "string"
            },
            "location": {
                "type": "string"
            },
            "engine_rpm": {
                "type": "double"
            },
            "vehicle_id": {
                "type": "string"
            }
        }
    }
},
"aliases": [ ]

}