Trying to get geo searches to work

gistfile1.txt

//Creating new index 'twitter'
curl -XPUT 'http://localhost:9200/twitter/'

//response: 
{
    "ok":true,
    "acknowledged":true
}

//Creating a geo-mapping for pin.location!? for twitter index
curl -XPUT 'http://localhost:9200/twitter/tweet/_mapping' -d '{
    "pin": {
        "properties": {
            "location": {
                "type": "geo_point"
            }
        }
    }
}'
response: 
{
    "ok":true,
    "acknowledged":true
}


//Indexing a geo-aware record to twitter of type tweet
curl -XPUT 'http://localhost:9200/twitter/tweet/1' -d '{
    "user" : "kimchy",
    "post_date" : "2009-11-15T14:12:12",
    "message" : "trying out Elastic Search",
    "pin": {
        "location": {
            "lat": 7.1383,
            "lon": 151.5031
        }
    }
}'
response: 
{
    "ok": true,
    "_index": "twitter",
    "_type": "tweet",
    "_id": "1",
    "_version": 1
}

//trying to search for tweets located within 200 km of point "7,151"
curl -XGET 'http://localhost:9200/twitter/tweet/_search' -d '{
    "query": {
        "filtered": {
            "query": {
                "match_all": {}
            },
            "filter": {
                "geo_distance": {
                    "distance": "20km",
                    "location": {
                        "lat": 7,
                        "lon": 151
                    }
                }
            }
        }
    }
}'
response: 
{
    "took": 1,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "failed": 0
    },
    "hits": {
        "total": 0,
        "max_score": null,
        "hits": []
    }
}

//trying to match all tweets with a geo-facet
curl -XGET 'http://localhost:9200/twitter/tweet/_search' -d '{
    "query" : {
        "match_all" : {}
    },
    "facets" : {
        "geo1" : {
            "geo_distance" : {
                "location" : {
                    "lat" : 7,
                    "lon" : 150
                },
                "ranges" : [
                    { "to" : 10 },
                    { "from" : 10, "to" : 20 },
                    { "from" : 20, "to" : 100 },
                    { "from" : 100 }
                ]
            }
        }
    }
}'
response: 
{
    "took": 3,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 1,
        "hits": [
            {
                "_index": "twitter",
                "_type": "tweet",
                "_id": "1",
                "_score": 1,
                "_source": {
                    "user": "kimchy",
                    "post_date": "2009-11-15T14:12:12",
                    "message": "trying out Elastic Search",
                    "pin": {
                        "location": {
                            "lat": 7.1383,
                            "lon": 151.5031
                        }
                    }
                }
            }
        ]
    },
    "facets": {
        "geo1": {
            "_type": "geo_distance",
            "ranges": [
                {
                    "to": 10,
                    "min": "Infinity",
                    "max": "-Infinity",
                    "total_count": 0,
                    "total": 0,
                    "mean": "NaN"
                },
                {
                    "from": 10,
                    "to": 20,
                    "min": "Infinity",
                    "max": "-Infinity",
                    "total_count": 0,
                    "total": 0,
                    "mean": "NaN"
                },
                {
                    "from": 20,
                    "to": 100,
                    "min": "Infinity",
                    "max": "-Infinity",
                    "total_count": 0,
                    "total": 0,
                    "mean": "NaN"
                },
                {
                    "from": 100,
                    "min": "Infinity",
                    "max": "-Infinity",
                    "total_count": 0,
                    "total": 0,
                    "mean": "NaN"
                }
            ]
        }
    }
}

//checking to see if the geopoint is mapped
curl -XGET 'http://localhost:9200/twitter/tweet/_mapping'
response:
{
    "tweet": {
        "properties": {
            "message": {
                "type": "string"
            },
            "pin": {
                "dynamic": "true",
                "properties": {
                    "location": {
                        "dynamic": "true",
                        "properties": {
                            "lon": {
                                "type": "double"
                            },
                            "lat": {
                                "type": "double"
                            }
                        }
                    }
                }
            },
            "location": {
                "type": "geo_point"
            },
            "user": {
                "type": "string"
            },
            "post_date": {
                "format": "dateOptionalTime",
                "type": "date"
            }
        }
    }
}