GET /restaurants/_search
{
  "size": 0,
  "query": {
    "geo_distance": {
      "distance": "9000km",
      "location": {
        "lat": 28.642449499999998,
        "lon": 77.10684570000001
      }
    }
  },
  "aggs": {
    "city_term": {
      "terms": {
        "field": "ratingText.keyword",
        "size": 10000,
        "shard_size": 10000
      },
      "aggs": {
        "max_vote_count": {
          "max": {
            "field": "votes"
          }
        },
        "max_vote_bucket_sort": {
          "bucket_sort": {
            "sort": [
              { "max_vote_count": { "order": "desc" } } 
            ]                              
          }
        }
      }
    }
  }
}