I am using ElasticSearch v6 to search my product catalog.
My product has a number fields, such as title, description, price, etc... one of the fields is: photo_path, which would contain the location of product photo on disk.
photo_path does need to be searched, but need to be retrieved.
Question: Is there a way to mark this field as not searchable/not indexed? And is this a good idea, for example will I save storage/process time, by marking this field not searchable.