OpenSearch/docs/java-rest/high-level/indices/create_index.asciidoc

--
:api: create-index
:request: CreateIndexRequest
:response: CreateIndexResponse
--

[id="{upid}-{api}"]
=== Create Index API

[id="{upid}-{api}-request"]
==== Create Index Request

A +{request}+ requires an `index` argument:

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests-file}[{api}-request]
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<1> The index to create

==== Index settings
Each index created can have specific settings associated with it.

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<1> Settings for this index

[[java-rest-high-create-index-request-mappings]]
==== Index mappings
An index may be created with mappings for its document types

["source","java",subs="attributes,callouts,macros"]
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<1> The type to define
<2> The mapping for this type, provided as a JSON string

The mapping source can be provided in different ways in addition to the
`String` example shown above:

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests-file}[{api}-mappings-map]
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<1> Mapping source provided as a `Map` which gets automatically converted
to JSON format

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests-file}[{api}-mappings-xcontent]
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<1> Mapping source provided as an `XContentBuilder` object, the Elasticsearch
built-in helpers to generate JSON content

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests-file}[{api}-mappings-shortcut]
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<1> Mapping source provided as `Object` key-pairs, which gets converted to
JSON format

==== Index aliases
Aliases can be set at index creation time

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<1> The alias to define

==== Providing the whole source

The whole source including all of its sections (mappings, settings and aliases)
can also be provided:

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests-file}[{api}-whole-source]
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<1> The source provided as a JSON string. It can also be provided as a `Map`
or an `XContentBuilder`.

==== Optional arguments
The following arguments can optionally be provided:

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<1> Timeout to wait for the all the nodes to acknowledge the index creation as a `TimeValue`
<2> Timeout to wait for the all the nodes to acknowledge the index creation as a `String`

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests-file}[{api}-request-masterTimeout]
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<1> Timeout to connect to the master node as a `TimeValue`
<2> Timeout to connect to the master node as a `String`

["source","java",subs="attributes,callouts,macros"]
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<1> The number of active shard copies to wait for before the create index API returns a
response, as an `int`
<2> The number of active shard copies to wait for before the create index API returns a
response, as an `ActiveShardCount`

include::../execution.asciidoc[]

[id="{upid}-{api}-response"]
==== Create Index Response

The returned +{response}+ allows to retrieve information about the executed
 operation as follows:

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<1> Indicates whether all of the nodes have acknowledged the request
<2> Indicates whether the requisite number of shard copies were started for each shard in the index before timing out