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ScaleOutCluster

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最終更新日: 2026-01-13 21:47:33

1. API Description

Domain name for API request: emr.intl.tencentcloudapi.com.

This API is used to scale out a cluster.

A maximum of 20 requests can be initiated per second for this API.

We recommend you to use API Explorer
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API Explorer provides a range of capabilities, including online call, signature authentication, SDK code generation, and API quick search. It enables you to view the request, response, and auto-generated examples.

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common Params. The value used for this API: ScaleOutCluster.
Version Yes String Common Params. The value used for this API: 2019-01-03.
Region Yes String Common Params. For more information, please see the list of regions supported by the product.
InstanceChargeType Yes String The node billing mode. Valid values:
  • POSTPAID_BY_HOUR: The postpaid mode by hour.
  • SPOTPAID: The spot instance mode (for task nodes only).
  • InstanceId Yes String Cluster instance ID.
    ScaleOutNodeConfig Yes ScaleOutNodeConfig Scale-up node type and quantity.
    ClientToken No String Unique random identifier with the time efficiency of 5 minutes, which needs to be specified by the caller to prevent the client from creating resources again, for example, a9a90aa6---****-fae36063280.
    InstanceChargePrepaid No InstanceChargePrepaid Setting of parameters related to monthly subscription. Through this parameter, you can specify the duration of purchase for monthly subscription instances, whether to set auto-renewal, and other attributes. This parameter is required when the specified instance is subject to the payment mode of prepaid.
    ScriptBootstrapActionConfig.N No Array of ScriptBootstrapActionConfig Bootstrap Actions script settings.
    SoftDeployInfo.N No Array of Integer Scale-out deployment service. New nodes inherit services deployed in the current node type by default, including default optional services. This parameter only supports optional service filling, for example: HDFS, YARN, and Impala have been deployed to existing task nodes. When API is used to scale out the task nodes without deploying Impala, only HDFS and YARN are filled for deployment services. For more details, see Mapping Table of Component Names.
    ServiceNodeInfo.N No Array of Integer Deployment process. By default, all scale-out service processes are deployed. Deployment processes can be modified. For example, HDFS, YARN, or Impala has been deployed for the current Task node. The default deployment services include DataNode,NodeManager,ImpalaServer. If users need to modify deployment process information, the deployment process can be DataNode, NodeManager, ImpalaServerCoordinator or DataNode, NodeManager, ImpalaServerExecutor. For more details, see Mapping Table of Process Names.
    DisasterRecoverGroupIds.N No Array of String Spread placement group ID list. Only one can be specified currently.
    This parameter can be obtained by calling the DisasterRecoverGroupId field in the return value of the DescribeDisasterRecoverGroups API.
    Tags.N No Array of Tag List of tags bound to scale-out nodes.
    HardwareSourceType No String Resource type selected for scale-out with valid values "HOST","POD","MNode", where HOST indicates an ordinary CVM resource, POD indicates a resource provided by the TKE cluster or EKS cluster, and MNode indicates a fully managed resource type.
    PodSpecInfo No PodSpecInfo Pod-related resource information.
    ClickHouseClusterName No String Machine group name selected for ClickHouse cluster scale-out.
    ClickHouseClusterType No String Machine group type selected for ClickHouse cluster scale-out. "New" indicates creating a group type, and "old" indicates using an existing group type.
    YarnNodeLabel No String Specified Yarn Node Label for scale-out.
    EnableStartServiceFlag No Boolean Whether to start a service after scale-out (default: false).
  • true: yes
  • .
  • false: no
  • .
    ResourceSpec No NodeResourceSpec Specifications settings.
    Zone No String Availability zone of the instance, such as ap-guangzhou-1. This parameter can also be obtained from the Zone field in the return value of DescribeZones.
    SubnetId No String Subnet, which is the subnet at the time of cluster creation by default.
    ScaleOutServiceConfGroupsInfo.N No Array of ScaleOutServiceConfGroupsInfo Configuration group specified for scale-out.
    NodeMarks No NodeMark Node tag information: currently used only in Terraform.

    3. Output Parameters

    Parameter Name Type Description
    InstanceId String Instance ID.
    ClientToken String Client token.
    FlowId Integer Scale-out process ID.
    TraceId String Query process status and additional flow formation.
    DealNames Array of String Order number.
    Note: This field may return null, indicating that no valid values can be obtained.
    BillId String Large order number.
    RequestId String The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

    4. Example

    Example1 Scaling Out Clusters

    Input Example

    POST / HTTP/1.1
    Host: emr.intl.tencentcloudapi.com
    Content-Type: application/json
    X-TC-Action: ScaleOutCluster
    <Common request parameters>
    
    {
        "InstanceChargeType": "PREPAID",
        "InstanceId": "emr-m620",
        "ScaleOutNodeConfig": {
            "NodeFlag": "TASK",
            "NodeCount": 2
        },
        "SoftDeployInfo": [
            1,
            2
        ],
        "ServiceNodeInfo": [
            7
        ],
        "YarnNodeLabel": "CLOUD",
        "EnableStartServiceFlag": true,
        "ResourceSpec": {
            "SystemDisk": [
                {
                    "DiskType": "CLOUD_PREMIUM",
                    "DiskSize": 200,
                    "Count": 1,
                    "ExtraPerformance": 0
                }
            ],
            "DataDisk": [
                {
                    "DiskType": "CLOUD_HIGHIO",
                    "DiskSize": 4000,
                    "Count": 4,
                    "ExtraPerformance": 0
                }
            ],
            "LocalDataDisk": [],
            "InstanceType": "MA5.8XLARGE256",
            "Tags": []
        }
    }

    Output Example

    {
        "Response": {
            "ClientToken": "",
            "FlowId": 19239,
            "InstanceId": "emr-m620",
            "RequestId": "11f53a6c-df44-4496-acac-d09b98ccd",
            "TraceId": "1731400002-73146-8002"
        }
    }

    5. Developer Resources

    SDK

    TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

    Command Line Interface

    6. Error Code

    The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

    Error Code Description
    FailedOperation Operation failed.
    FailedOperation.GetCvmConfigQuotaFailed Failed to fetch the specifications of the CVM.
    InvalidParameter.InvalidInstanceChargeType Invalid instance billing mode.
    InvalidParameter.InvalidInstanceType Invalid model.
    InvalidParameter.InvalidNodeFlag Incorrect node type.
    InvalidParameter.InvalidSoftDeployInfo The InvalidSoftDeployInfo parameter is invalid or incorrect.
    ResourceInUse.InstanceInProcess The instance is under workflow.
    ResourceInsufficient.DiskInsufficient The disk specification is insufficient.
    ResourceInsufficient.InstanceInsufficient The node specification is unsupported or has been sold out.
    ResourceNotFound.InstanceNotFound The instance was not found.
    ResourceUnavailable.ResourceSpecNotDefaultSpec There is no default value of the current resource spec.

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