Update field mappings

POST /{index}/_mapping

Adds new fields to an existing data stream or index. You can also use this API to change the search settings of existing fields. For data streams, these changes are applied to all backing indices by default.

Path parameters

  • index string | array[string] Required

    A comma-separated list of index names the mapping should be added to (supports wildcards); use _all or omit to add the mapping on all indices.

Query parameters

  • allow_no_indices boolean

    If false, the request returns an error if any wildcard expression, index alias, or _all value targets only missing or closed indices. This behavior applies even if the request targets other open indices.

  • expand_wildcards string | array[string]

    Type of index that wildcard patterns can match. If the request can target data streams, this argument determines whether wildcard expressions match hidden data streams. Supports comma-separated values, such as open,hidden. Valid values are: all, open, closed, hidden, none.

  • ignore_unavailable boolean

    If false, the request returns an error if it targets a missing or closed index.

  • master_timeout string

    Period to wait for a connection to the master node. If no response is received before the timeout expires, the request fails and returns an error.

  • timeout string

    Period to wait for a response. If no response is received before the timeout expires, the request fails and returns an error.

  • write_index_only boolean

    If true, the mappings are applied only to the current write index for the target.

application/json

Body Required

  • date_detection boolean

    Controls whether dynamic date detection is enabled.

  • dynamic string

    Values are strict, runtime, true, or false.

  • dynamic_date_formats array[string]

    If date detection is enabled then new string fields are checked against 'dynamic_date_formats' and if the value matches then a new date field is added instead of string.

  • dynamic_templates object | array[object]

    Specify dynamic templates for the mapping.

    One of:
    object-1 object array-2 array[object]
  • _field_names object

    Additional properties are allowed.

    Hide _field_names attribute Show _field_names attribute object
  • _meta object
    Hide _meta attribute Show _meta attribute object
    • * object Additional properties

      Additional properties are allowed.

  • numeric_detection boolean

    Automatically map strings into numeric data types for all fields.

  • properties object

    Mapping for a field. For new fields, this mapping can include:

    • Field name
    • Field data type
    • Mapping parameters
  • _routing object

    Additional properties are allowed.

    Hide _routing attribute Show _routing attribute object
  • _source object

    Additional properties are allowed.

    Hide _source attributes Show _source attributes object
  • runtime object
    Hide runtime attribute Show runtime attribute object
    • * object Additional properties

      Additional properties are allowed.

      Hide * attributes Show * attributes object
      • fields object

        For type composite

        Hide fields attribute Show fields attribute object
        • * object Additional properties

          Additional properties are allowed.

          Hide * attribute Show * attribute object
          • type string Required

            Values are boolean, composite, date, double, geo_point, ip, keyword, long, or lookup.

      • fetch_fields array[object]

        For type lookup

        Hide fetch_fields attributes Show fetch_fields attributes object
        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • format string
      • format string

        A custom format for date type runtime fields.

      • input_field string

        Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

      • target_field string

        Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

      • target_index string
      • script object

        Additional properties are allowed.

        Hide script attributes Show script attributes object
        • source string

          The script source.

        • id string
        • params object

          Specifies any named parameters that are passed into the script as variables. Use parameters instead of hard-coded values to decrease compile time.

          Hide params attribute Show params attribute object
          • * object Additional properties

            Additional properties are allowed.

        • lang string

          Any of:
          _types:ScriptLanguage string _types:ScriptLanguage string

          Values are painless, expression, mustache, or java.

        • options object
          Hide options attribute Show options attribute object
          • * string Additional properties
      • type string Required

        Values are boolean, composite, date, double, geo_point, ip, keyword, long, or lookup.

Responses

  • 200 application/json
    Hide response attributes Show response attributes object
    • acknowledged boolean Required

      For a successful response, this value is always true. On failure, an exception is returned instead.

    • _shards object

      Additional properties are allowed.

      Hide _shards attributes Show _shards attributes object
POST /{index}/_mapping 
curl \
 -X POST http://api.example.com/{index}/_mapping \
 -H "Content-Type: application/json" \
 -d '"{\n  \"properties\": {\n    \"email\": {\n      \"type\": \"keyword\"\n    }\n  }\n}"'
Request example 
{
  "properties": {
    "email": {
      "type": "keyword"
    }
  }
}
Response examples (200) 
{
  "acknowledged": true,
  "_shards": {
    "failed": 42.0,
    "successful": 42.0,
    "total": 42.0,
    "failures": [
      {
        "index": "string",
        "node": "string",
        "reason": {
          "type": "string",
          "reason": "string",
          "stack_trace": "string",
          "caused_by": {},
          "root_cause": [
            {}
          ],
          "suppressed": [
            {}
          ]
        },
        "shard": 42.0,
        "status": "string"
      }
    ],
    "skipped": 42.0
  }
}