ElasticSearch boost + match all 1019

test.sh

curl -XDELETE 'http://localhost:9200/twitter/'

# mapping for article includes 
# "properties" : { "_boost" : { "type" : "float", "name" : "_boost", "null_value" : 1.0}, ...

curl -XPUT 'http://localhost:9200/twitter/article/1' -d '{
    "_boost" : 1.0
}'

curl -XPUT 'http://localhost:9200/twitter/article/2' -d '{ 
    "_boost" : 10.0
}'

curl -XPUT 'http://localhost:9200/twitter/article/3' -d '{ 
    "_boost" : 3.0
}'

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

curl -XPOST 'http://localhost:9200/twitter/_search?pretty=true' -d '{
  "query":{"match_all": { "norms_field" : "_boost" }
  }}'