129 lines
2.9 KiB
Plaintext
129 lines
2.9 KiB
Plaintext
[[indices-put-mapping]]
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== Put Mapping
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The PUT mapping API allows you to add a new type to an existing index, or add new
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fields to an existing type:
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[source,js]
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--------------------------------------------------
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PUT twitter <1>
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{}
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PUT twitter/_mapping/_doc <2>
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{
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"properties": {
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"name": {
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"type": "text"
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}
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}
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}
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PUT twitter/_mapping/_doc <3>
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{
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"properties": {
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"email": {
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"type": "keyword"
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}
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}
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}
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--------------------------------------------------
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// CONSOLE
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<1> <<indices-create-index,Creates an index>> called `twitter` without any type mapping.
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<2> Uses the PUT mapping API to add a new mapping type called `user`.
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<3> Uses the PUT mapping API to add a new field called `email` to the `user` mapping type.
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More information on how to define type mappings can be found in the
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<<mapping,mapping>> section.
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[float]
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=== Multi-index
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The PUT mapping API can be applied to multiple indices with a single request.
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For example, we can update the `twitter-1` and `twitter-2` mappings at the same time:
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[source,js]
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--------------------------------------------------
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# Create the two indices
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PUT twitter-1
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PUT twitter-2
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# Update both mappings
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PUT /twitter-1,twitter-2/_mapping/_doc <1>
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{
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"properties": {
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"user_name": {
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"type": "text"
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}
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}
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}
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--------------------------------------------------
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// CONSOLE
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<1> Note that the indices specified (`twitter-1,twitter-2`) follows <<multi-index,multiple index names>> and wildcard format.
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NOTE: When updating the `_default_` mapping with the
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<<indices-put-mapping,PUT mapping>> API, the new mapping is not merged with
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the existing mapping. Instead, the new `_default_` mapping replaces the
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existing one.
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[[updating-field-mappings]]
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[float]
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=== Updating field mappings
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In general, the mapping for existing fields cannot be updated. There are some
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exceptions to this rule. For instance:
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* new <<properties>> can be added to <<object>> fields.
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* new <<multi-fields,multi-fields>> can be added to existing fields.
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* the <<ignore-above>> parameter can be updated.
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For example:
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[source,js]
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-----------------------------------
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PUT my_index <1>
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{
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"mappings": {
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"_doc": {
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"properties": {
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"name": {
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"properties": {
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"first": {
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"type": "text"
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}
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}
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},
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"user_id": {
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"type": "keyword"
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}
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}
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}
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}
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}
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PUT my_index/_mapping/_doc
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{
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"properties": {
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"name": {
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"properties": {
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"last": { <2>
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"type": "text"
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}
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}
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},
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"user_id": {
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"type": "keyword",
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"ignore_above": 100 <3>
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}
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}
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}
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-----------------------------------
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// CONSOLE
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<1> Create an index with a `first` field under the `name` <<object>> field, and a `user_id` field.
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<2> Add a `last` field under the `name` object field.
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<3> Update the `ignore_above` setting from its default of 0.
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Each <<mapping-params,mapping parameter>> specifies whether or not its setting
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can be updated on an existing field.
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