elasticsearch attempt to grouping

curl -X DELETE "http://localhost:9200/articles"

curl -X PUT    "http://localhost:9200/articles" -d '{
  "settings": {
    "index": {
      "number_of_shards": 1, "number_of_replicas": 0
    }
  }
}'

curl -X POST "http://localhost:9200/articles/article" -d '{ "id": 111, "owner": ["user_1"], "title": "One bad doc" }'
curl -X POST "http://localhost:9200/articles/article" -d '{ "id": 222, "owner": ["user_2"], "title": "Two bad doc" }'
curl -X POST "http://localhost:9200/articles/article" -d '{ "id": 333, "owner": ["user_3"], "title": "Three good doc" }'

curl -X POST "http://localhost:9200/articles/article" -d '{ "id": 444, "owner": ["user_1"], "title": "Four good doc" }'
curl -X POST "http://localhost:9200/articles/article" -d '{ "id": 555, "owner": ["user_2"], "title": "Five good doc" }'
curl -X POST "http://localhost:9200/articles/article" -d '{ "id": 666, "owner": ["user_1"], "title": "Six good doc" }'


curl -XPOST 'http://localhost:9200/articles/_refresh'

curl -X POST "http://localhost:9200/articles/_search?pretty=true" -d '{
  "query": {
      "bool":{
         "must":[{ "query_string":{ "query":"doc", "default_operator":"AND" } }],
         "should":[{ "query_string":{ "query":"user_2", "default_operator":"AND", "boost":2000 } }]
      }
  },

  "facets": {
    "tags": { "terms": {"field": "owner", "size": 10} }
  }

}'