aparo/pyes — pull request #460 by maciejkula (2014-09-18 12:06:53+00:00)
Title: Allow query_weight and rescore_query_weight to be zero.

It should be possible to legitimately set one or both of these to zero.

They are set to 1 by default: http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-rescore.html