83 lines
2.4 KiB
Markdown
83 lines
2.4 KiB
Markdown
---
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layout: default
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title: Update mapping
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parent: REST API reference
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nav_order: 35
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---
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# Update mapping
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Introduced 1.0
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{: .label .label-purple }
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If you want to update an index's mappings to add or update field types after index creation, you can do so with the update mapping API operation.
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Note that you cannot use this operation to update mappings that already map to existing data in the index. You must first create a new index with your desired mappings, and then use the [reindex API operation]({{site.url}}{{site.baseurl}}/opensearch/reindex-data) to map all the documents from your old index to the new index. If you don't want any downtime while reindexing your indices, you can use [aliases]({{site.url}}{{site.baseurl}}/opensearch/index-alias).
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## Example
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```json
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PUT /sample-index/_mapping
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{
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"properties": {
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"age": {
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"type": "integer"
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},
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"occupation":{
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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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## Path and HTTP methods
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```
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PUT /<target-index>/_mapping
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```
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You can also use the update mapping operation to update multiple indices with one request.
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```
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PUT /<target-index1>,<target-index2>/_mapping
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```
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## URL parameters
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All update mapping parameters are optional.
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Parameter | Data Type | Description
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:--- | :--- | :---
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allow_no_indices | Boolean | Whether to ignore wildcards that don’t match any indices. Default is `true`.
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expand_wildcards | String | Expands wildcard expressions to different indices. Combine multiple values with commas. Available values are `all` (match all indices), `open` (match open indices), `closed` (match closed indices), `hidden` (match hidden indices), and `none` (do not accept wildcard expressions), which must be used with `open`, `closed`, or both. Default is `open`.
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ignore_unavailable | Boolean | If true, OpenSearch does not include missing or closed indices in the response.
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master_timeout | Time | How long to wait for a connection to the master node. Default is `30s`.
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timeout | Time | How long to wait for the response to return. Default is `30s`.
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write_index_only | Boolean | Whether OpenSearch should apply mapping updates only to the write index.
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## Request body
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The request body must contain `properties`, which has all of the mappings that you want to update.
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```json
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{
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"properties":{
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"color":{
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"type": "text"
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},
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"year":{
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"type": "integer"
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}
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}
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}
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```
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## Response
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```json
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{
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"acknowledged": true
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}
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```
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