Github user jorelcb commented on the issue:
https://github.com/apache/incubator-predictionio/pull/195
@jramos hi, please check possible negative effects on performance about use
_queries_ in exchange of
_filters_ in elasticsearch:
https://www.elastic.co/guide/en/elasticsearch/guide/current/_queries_and_filters.html#_performance_differences
> As a general rule, use query clauses for full-text search or for any
condition that should affect the relevance score, and use filters for
everything else.
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