Highlighting on a copy_to Field

Elastic Stack Elasticsearch
1

Hello,

Is it possible to highlight a copy_to field?

I have a title which I want to be able to analyze two different ways. One with stop words and stemming, and one without. I can effectively query the search results against either field, however when using the copy_to field in a highlight_query I do not see any highlight results.

Below is the relevant mapping.

    "stemmed_index": {
      "type": "custom",
      "char_filter": "html_strip",
      "tokenizer": "standard",
      "filter": [
        "standard",
        "synonym_filter",
        "stop",
        "lowercase",
        "stemmer",
        "asciifolding"
      ]
    },
    "stemmed_search": {
      "type": "custom",
      "tokenizer": "standard",
      "filter": [
        "standard",
        "synonym_filter",
        "stop",
        "lowercase",
        "stemmer",
        "asciifolding"
      ]
    },
    "index_unstemmed": {
      "type": "custom",
      "char_filter": "html_strip",
      "tokenizer": "standard",
      "filter": [
        "common_grams_index",
        "lowercase"
      ]
    },
    "search_unstemmed": {
      "type": "custom",
      "tokenizer": "standard",
      "filter": [
        "synonym_filter",
        "lowercase"
      ]
    },

"title": {
"type": "text",
"analyzer": "stemmed_index",
"search_analyzer": "stemmed_search",
"term_vector": "with_positions_offsets",
"copy_to": [
"title_unstemmed"
]
},
"title_unstemmed": {
"type": "text",
"analyzer": "index_unstemmed",
"search_analyzer": "search_unstemmed",
"term_vector": "with_positions_offsets",
"include_in_all": true
}

I found this StackOverflow post but even using the same mapping between my title and title_unstemmed fields did not fix my highlighting issue.

Thanks.

2

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.