source.md

layout	title	nav_order	has_children	parent
default	Source	40	false	Metadata fields

Source

The _source field contains the original JSON document body that was passed at index time. This field is not indexed and is not searchable but is stored so that it can be returned when executing fethc requests such as get and search.

Disabling the field

You can disable the _source field as shown in the following example:

PUT sample-index1
{
  "mappings": {
    "_source": {
      "enabled": false
    }
  }
}

{% include copy-curl.html %}

Disabling the _source field can cause certain featues to become not supported, such as update, update_by_query, and reindex APIs and the ability to debug queries or aggregations by using the the original document at index time. {: .warning}

Including or excluding fields

You can prune contents of the _source field after the document has been indexed but before the field is stored. You can use the includes and excludes parameters to control which field are included in the stored _source field, as shown in the following example:

PUT logs
{
  "mappings": {
    "_source": {
      "includes": [
        "*.count",
        "meta.*"
      ],
      "excludes": [
        "meta.description",
        "meta.other.*"
      ]
    }
  }
}

{% include copy-curl.html %}

Although these fields are not stored in the _source, you can still search on them, as the data is still indexed.