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OpenSearch:ModifyIndexPartition

Last Updated:Aug 28, 2026

Modifies index partition information, such as shard count and concurrency.

Operation description

Method

PUT

URI

/openapi/ha3/instances/{instanceId}/index-partition

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Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

searchengine:ModifyIndexPartition

*Instance

acs:searchengine:{#regionId}:{#accountId}:instance/{#instanceId}

None None

Request syntax

PUT /openapi/ha3/instances/{instanceId}/index-partition HTTP/1.1

Path Parameters

Parameter

Type

Required

Description

Example

instanceId

string

Yes

The instance ID.

ha-cn-pl32rf0****

Request parameters

Parameter

Type

Required

Description

Example

body

object

No

The request body.

dataSourceName

string

No

The name of the data source.

ha-cn-pl32rf0****_test_api

generation

integer

No

The primary key.

1633293829

domainName

string

No

The data center.

sz_vpc_domain_1

indexInfos

array<object>

No

The index information.

object

No

The information about each index.

indexName

string

No

The index name.

test_api

partitionCount

integer

No

The number of shards.

3

parallelNum

integer

No

The concurrency. Default value: 1.

1

Example

PUT /openapi/ha3/instances/{instanceId}/index-partition

{
  "dataSourceName":"ha-cn-pl32n3bi904_d",
  "domainName":"pre_domain_1",
  "generation":"1633293829",
  "indexInfos":[
    {
      "indexName":"atest2",
      "partitionCount":2
    }
  ]
}

Response elements

Element

Type

Description

Example

object

requestId

string

The request ID.

93A9E542-8CF8-5BA6-99AB-94C0FE520429

result

object

The returned result.

[]

Sample responses

{
	"requestId": "0A6EB64B-B4C8-CF02-810F-E660812972FF",
  "result": []
}

For more information, see Response structure.

Examples

Success response

JSON format

{
  "requestId": "93A9E542-8CF8-5BA6-99AB-94C0FE520429",
  "result": []
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.