elasticsearch - Disabling field analyzing by default in elastic search

Question

Is it possible to enable indexing of elastic search fields selectively for a type?

Through the mapping settings for a specific index, one can set the property

{ "index" : "not_analyzed" }

For a specific field. Since my document has too many fields and is likely to change structure in the future, I would need a mapping where fields are not analyzed by default unless specified differently.

Is this possible?

Answer 1

Yes - have a look at dynamic templates

Try the following:

PUT /my_index
{
  "mappings": {
    "my_type": {
        "dynamic_templates": [
            { "notanalyzed": {
                  "match":              "*", 
                  "match_mapping_type": "string",
                  "mapping": {
                      "type":        "string",
                      "index":       "not_analyzed"
                  }
               }
            }
          ]
       }
   }
}

The dynamic template is for new fields that aren't covered by your mapping - from the docs:

With dynamic_templates, you can take complete control over the mapping that is generated for newly detected fields.

You can also vary the mapping according to the field name, e.g. use "match": "*_data", to have a different set of mappings for field names ending in "_data".