Elasticsearch geo_point搜索异常

Question

I have a little problem with geo_point filter in my mapping.

mapping: offer: ... mapping: ... location: type: nested include_in_parent: true properties: city: type: string analyzer: my_analyzer boost: 0.5 include_in_all: true region: type: string analyzer: my_analyzer boost: 0.3 include_in_all: false geo: type: geo_point lat_lon: true boost: 0 include_in_all: false

When execute this code:

        $filter = new Filter\BoolOr();

        $geo = new Filter\Nested();
        $geo->setPath('offer.location');
        $geo->setFilter(
            new Filter\GeoDistance('location.geo', array(
                'lat' => $city->getLatitude(),
                'lon' => $city->getLongitude()
            ), sprintf('%dkm', $distance))
        );
        $filter->addFilter($geo);

I get this exeption:

nested: QueryParsingException[[index] failed to find geo_point field [location.geo]];