Custom analyzer for search and indexing

Elastic Stack Elasticsearch
1

Hello, when creating an index I specifically created a custom analyzer which should be used for indexing and searching (see the example code below)

  "settings": {
     "analysis": {
      "analyzer": {
        "custom_name_analyzer": {
          "type": "custom",
          "tokenizer": "keyword",
          "filter": [
            "lowercase",
            "asciifolding",
            "word_delimiter"
          ]
        }
      }
    }
  }

It is used for a name field in a document like this:

  "mappings": {
    "dynamic": "false",
    "properties": {
      "name": {
        "properties": {
          "cs": { "type": "text",
                  "analyzer":  "custom_name_analyzer",
                  "search_analyzer": "custom_name_analyzer"
          }
        }
      }

However, when I do GET <index-name>/_mapping, I do not see the search_analyzer being provided.
What is the reason for it?
How can I determine which analyzer is used for searching in this case?

2

If you just specify an analyzer, this will be used for both indexing and search. In your case you therefore do not need to specify the search_analyzer as it is not different from the analyzer. If you in the mapping see the analyzer correctly set and no search_analyzer specified, I suspect it is possible Elasticsearch has rationalised this as they are the same and that would be the standard way of configuring it.

3

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