Elastic Search Interaction of Highlights with Synonym Filter
@SergeyS the situation both you and @user2430530 has is perfectly described in this section of the documentation.
And the suggestion there is to try and define a single term for each serie of synonyms not to get back that mix up of terms highlighted in the result.
Something like this:
"analysis": { "analyzer": { "synonym": { "tokenizer": "whitespace", "filter": [ "synonym" ] } }, "filter": { "synonym": { "type": "synonym", "synonyms": [ "dawdle, waste time=>waste_time" ] } }}Then you'll get the desired result from ES:
"highlight": { "text": [ "some <em>dawdle</em> company" ] }