OpenSearch/docs/reference/indices/put-mapping.asciidoc

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[[indices-put-mapping]]
=== Put mapping API
++++
<titleabbrev>Put mapping</titleabbrev>
++++
Adds new fields to an existing index or changes the search settings of existing
fields.
[source,console]
----
PUT /twitter/_mapping
{
"properties": {
"email": {
"type": "keyword"
}
}
}
----
// TEST[setup:twitter]
NOTE: Before 7.0.0, the 'mappings' definition used to include a type name.
Although specifying types in requests is now deprecated, a type can still be
provided if the request parameter `include_type_name` is set. For more details,
please see <<removal-of-types>>.
[[put-mapping-api-request]]
==== {api-request-title}
`PUT /<index>/_mapping`
`PUT /_mapping`
[[put-mapping-api-path-params]]
==== {api-path-parms-title}
include::{docdir}/rest-api/common-parms.asciidoc[tag=index]
+
To update the mapping of all indices, omit this parameter or use a value of
`_all`.
[[put-mapping-api-query-params]]
==== {api-query-parms-title}
include::{docdir}/rest-api/common-parms.asciidoc[tag=allow-no-indices]
+
Defaults to `false`.
include::{docdir}/rest-api/common-parms.asciidoc[tag=expand-wildcards]
+
Defaults to `open`.
include::{docdir}/rest-api/common-parms.asciidoc[tag=include-type-name]
include::{docdir}/rest-api/common-parms.asciidoc[tag=index-ignore-unavailable]
include::{docdir}/rest-api/common-parms.asciidoc[tag=timeoutparms]
[[put-mapping-api-request-body]]
==== {api-request-body-title}
`properties`::
+
--
(Required, <<mapping,mapping object>>) Mapping for a field. For new
fields, this mapping can include:
* Field name
* <<field-datatypes,Field datatype>>
* <<mapping-params,Mapping parameters>>
For existing fields, see <<updating-field-mappings>>.
--
[[put-mapping-api-example]]
==== {api-examples-title}
[[put-field-mapping-api-basic-ex]]
===== Example with index setup
The put mapping API requires an existing index. The following
<<indices-create-index, create index>> API request creates the `publications`
index with no mapping.
[source,console]
----
PUT /publications
----
The following put mapping API request adds `title`, a new <<text,`text`>> field,
to the `publications` index.
[source,console]
----
PUT /publications/_mapping
{
"properties": {
"title": { "type": "text"}
}
}
----
// TEST[continued]
[[put-mapping-api-multi-ex]]
===== Multiple indices
The PUT mapping API can be applied to multiple indices with a single request.
For example, we can update the `twitter-1` and `twitter-2` mappings at the same time:
[source,console]
--------------------------------------------------
# Create the two indices
PUT /twitter-1
PUT /twitter-2
# Update both mappings
PUT /twitter-1,twitter-2/_mapping <1>
{
"properties": {
"user_name": {
"type": "text"
}
}
}
--------------------------------------------------
// TEST[setup:twitter]
<1> Note that the indices specified (`twitter-1,twitter-2`) follows <<multi-index,multiple index names>> and wildcard format.
[[add-new-field-to-object]]
===== Add new properties to an existing object field
You can use the put mapping API
to add new properties
to an existing <<object,`object`>> field.
To see how this works,
try the following example.
Use the <<indices-create-index,create index>> API
to create an index
with the `name` object field
and an inner `first` text field.
[source,console]
----
PUT /my_index
{
"mappings": {
"properties": {
"name": {
"properties": {
"first": {
"type": "text"
}
}
}
}
}
}
----
Use the put mapping API
to add a new inner `last` text field
to the `name` field.
[source,console]
----
PUT /my_index/_mapping
{
"properties": {
"name": {
"properties": {
"last": {
"type": "text"
}
}
}
}
}
----
// TEST[continued]
Use the <<indices-get-mapping,get mapping>> API
to verify your changes.
[source,console]
----
GET /my_index/_mapping
----
// TEST[continued]
The API returns the following response:
[source,console-result]
----
{
"my_index" : {
"mappings" : {
"properties" : {
"name" : {
"properties" : {
"first" : {
"type" : "text"
},
"last" : {
"type" : "text"
}
}
}
}
}
}
}
----
[[add-multi-fields-existing-field-ex]]
===== Add multi-fields to an existing field
<<multi-fields,Multi-fields>>
let you index the same field
in different ways.
You can use the put mapping API
to update the `fields` mapping parameter
and enable multi-fields for an existing field.
To see how this works,
try the following example.
Use the <<indices-create-index,create index>> API
to create an index
with the `city` <<text,text>> field.
[source,console]
----
PUT /my_index
{
"mappings": {
"properties": {
"city": {
"type": "text"
}
}
}
}
----
While text fields work well for full-text search,
<<keyword,keyword>> fields are not analyzed
and may work better for sorting or aggregations.
Use the put mapping API
to enable a multi-field for the `city` field.
This request adds the `city.raw` keyword multi-field,
which can be used for sorting.
[source,console]
----
PUT /my_index/_mapping
{
"properties": {
"city": {
"type": "text",
"fields": {
"raw": {
"type": "keyword"
}
}
}
}
}
----
// TEST[continued]
Use the <<indices-get-mapping,get mapping>> API
to verify your changes.
[source,console]
----
GET /my_index/_mapping
----
// TEST[continued]
The API returns the following response:
[source,console-result]
----
{
"my_index" : {
"mappings" : {
"properties" : {
"city" : {
"type" : "text",
"fields" : {
"raw" : {
"type" : "keyword"
}
}
}
}
}
}
}
----
[[change-existing-mapping-parms]]
===== Change supported mapping parameters for an existing field
The documentation for each <<mapping-params,mapping parameter>>
indicates whether you can update it
for an existing field
using the put mapping API.
For example,
you can use the put mapping API
to update the <<ignore-above,`ignore_above`>> parameter.
To see how this works,
try the following example.
Use the <<indices-create-index,create index>> API to create an index
containing a `user_id` keyword field.
The `user_id` field
has an `ignore_above` parameter value
of `20`.
[source,console]
----
PUT /my_index
{
"mappings": {
"properties": {
"user_id": {
"type": "keyword",
"ignore_above": 20
}
}
}
}
----
Use the put mapping API
to change the `ignore_above` parameter value
to `100`.
[source,console]
----
PUT /my_index/_mapping
{
"properties": {
"user_id": {
"type": "keyword",
"ignore_above": 100
}
}
}
----
// TEST[continued]
Use the <<indices-get-mapping,get mapping>> API
to verify your changes.
[source,console]
----
GET /my_index/_mapping
----
// TEST[continued]
The API returns the following response:
[source,console-result]
----
{
"my_index" : {
"mappings" : {
"properties" : {
"user_id" : {
"type" : "keyword",
"ignore_above" : 100
}
}
}
}
}
----
[[updating-field-mappings]]
===== Change the mapping of an existing field
// tag::change-field-mapping[]
Except for supported <<mapping-params,mapping parameters>>,
you can't change the mapping or field type of an existing field.
Changing an existing field could invalidate data that's already indexed.
If you need to change the mapping of a field,
create a new index with the correct mapping
and <<docs-reindex,reindex>> your data into that index.
// end::change-field-mapping[]
To see how this works,
try the following example.
Use the <<indices-create-index,create index>> API
to create the `users` index
with the `user_id` field
with the <<number,`long`>> field type.
[source,console]
----
PUT /users
{
"mappings" : {
"properties": {
"user_id": {
"type": "long"
}
}
}
}
----
Use the <<docs-index_,index>> API
to index several documents
with `user_id` field values.
[source,console]
----
POST /users/_doc?refresh=wait_for
{
"user_id" : 12345
}
POST /users/_doc?refresh=wait_for
{
"user_id" : 12346
}
----
// TEST[continued]
To change the `user_id` field
to the <<keyword,`keyword`>> field type,
use the create index API
to create the `new_users` index with the correct mapping.
[source,console]
----
PUT /new_users
{
"mappings" : {
"properties": {
"user_id": {
"type": "keyword"
}
}
}
}
----
// TEST[continued]
Use the <<docs-reindex,reindex>> API
to copy documents from the `users` index
to the `new_users` index.
[source,console]
----
POST /_reindex
{
"source": {
"index": "users"
},
"dest": {
"index": "new_users"
}
}
----
// TEST[continued]
The API returns the following response:
[source,console-result]
----
{
"took": 147,
"timed_out": false,
"total": 2,
"updated": 0,
"created": 2,
"deleted": 0,
"batches": 1,
"version_conflicts": 0,
"noops": 0,
"retries": {
"bulk": 0,
"search": 0
},
"throttled_millis": 0,
"requests_per_second": -1.0,
"throttled_until_millis": 0,
"failures" : [ ]
}
----
// TESTRESPONSE[s/"took": 147/"took": "$body.took"/]
[[rename-existing-field]]
===== Rename a field
// tag::rename-field[]
Renaming a field would invalidate data already indexed under the old field name.
Instead, add an <<alias, `alias`>> field to create an alternate field name.
// end::rename-field[]
For example,
use the <<indices-create-index,create index>> API
to create an index
with the `user_identifier` field.
[source,console]
----
PUT /my_index
{
"mappings": {
"properties": {
"user_identifier": {
"type": "keyword"
}
}
}
}
----
Use the put mapping API to add the `user_id` field alias
for the existing `user_identifier` field.
[source,console]
----
PUT /my_index/_mapping
{
"properties": {
"user_id": {
"type": "alias",
"path": "user_identifier"
}
}
}
----
// TEST[continued]
Use the <<indices-get-mapping,get mapping>> API
to verify your changes.
[source,console]
----
GET /my_index/_mapping
----
// TEST[continued]
The API returns the following response:
[source,console-result]
----
{
"my_index" : {
"mappings" : {
"properties" : {
"user_id" : {
"type" : "alias",
"path" : "user_identifier"
},
"user_identifier" : {
"type" : "keyword"
}
}
}
}
}
----