private final Comparator<CartesianGeoRecord> geoRecordComparator;
public GeoIndexReader(Directory directory, GeoSearchConfig geoSearchConfig) throws IOException {
super(initReader(directory, geoSearchConfig));
geoRecordSerializer = new CartesianGeoRecordSerializer();
geoRecordComparator = new CartesianGeoRecordComparator();
if (subGeoReaders == null) {
subGeoReaders = buildSubReaders();
}