ModifyAutoScaleStrategy

Last updated: 2025-11-13 20:48:56

ModifyAutoScaleStrategy

Last updated: 2025-11-13 20:48:56

1. API Description

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

This API is used to modify automatic scaling rules.

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

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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: ModifyAutoScaleStrategy.
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.
InstanceId	Yes	String	Instance ID.
StrategyType	Yes	Integer	Automatic scaling rule type. 1: Scaling by load metrics; 2: Scaling by time
LoadAutoScaleStrategies.N	No	Array of LoadAutoScaleStrategy	Metric for load-based scaling.
TimeAutoScaleStrategies.N	No	Array of TimeAutoScaleStrategy	Rule for time-based scaling
GroupId	No	Integer	Scaling group ID.

3. Output Parameters

Parameter Name	Type	Description
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 Modifying a Scaling Rule

This example shows you how to modify a scaling rule.

Input Example

POST / HTTP/1.1
Host: emr.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: ModifyAutoScaleStrategy
<Common request parameters>

{
    "InstanceId": "emr-123",
    "StrategyType": 0,
    "LoadAutoScaleStrategies": [
        {
            "CalmDownTime": 60,
            "GraceDownFlag": false,
            "GraceDownTime": 0,
            "GroupId": 0,
            "LoadMetricsConditions": {
                "LoadMetrics": [
                    {
                        "Conditions": [
                            {
                                "CompareMethod": 1,
                                "Threshold": 16
                            }
                        ],
                        "LoadMetrics": "AvailableVCores#root.default",
                        "MetricId": 1,
                        "StatisticPeriod": 60,
                        "TriggerThreshold": 1
                    }
                ]
            },
            "MeasureMethod": "INSTANCE",
            "Priority": 3,
            "ProcessMethod": 3,
            "ScaleAction": 2,
            "ScaleNum": 2,
            "Soft": "yarn",
            "StrategyId": 1521,
            "StrategyName": "Load-based Scale-In",
            "StrategyStatus": 3
        }
    ],
    "TimeAutoScaleStrategies": [
        {
            "CompensateFlag": 1,
            "ConfigGroupAssigned": "{\"HDFS-2.8.5\":-1,\"YARN-2.8.5\":-1}",
            "GraceDownFlag": false,
            "GraceDownTime": 0,
            "GroupId": 0,
            "IntervalTime": 0,
            "MaxUse": 8,
            "MeasureMethod": "INSTANCE",
            "Priority": 2,
            "RepeatStrategy": {
                "Expire": "2025-11-05 23:59:59",
                "NotRepeat": {
                    "ExecuteAt": "2024-11-06 09:10:00"
                },
                "RepeatType": "NONE"
            },
            "RetryValidTime": 60,
            "ScaleAction": 1,
            "ScaleNum": 6,
            "ServiceNodeInfo": [
                7
            ],
            "SoftDeployInfo": [
                1,
                2
            ],
            "StrategyId": 1783,
            "StrategyName": "Test Quasi-Realtime Task Scale-Out",
            "StrategyStatus": 3,
            "Tags": [
                {
                    "TagKey": "group",
                    "TagValue": "data"
                }
            ],
            "TerminatePolicy": "TIMING"
        }
    ]
}

Output Example

{
    "Response": {
        "RequestId": "8833a2df-1487-4f78-89b6-eff26058a240"
    }
}

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

Tencent Cloud CLI 3.0

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.
InternalError.CamCgwError	An error occurred while calling another service API.
InvalidParameter.InvalidStatisticPeriodOrTriggerThreshold	The StatisticPeriod or TriggerThreshold parameter is invalid.
InvalidParameter.InvalidStrategy	Parameter error.
InvalidParameter.InvalidStrategyPriority	Invalid rule priority.
InvalidParameter.InvalidStrategySpec	Invalid specification.
InvalidParameter.InvalidStrategyType	Unsupported scaling policy type.
InvalidParameter.InvalidTimeLayout	Parameter error.
InvalidParameter.RepeatedExecutionTime	Duplicate execution time.
InvalidParameter.RepeatedStrategyName	Repeated scaling rule name.
ResourceNotFound.StrategyNotFound	Corresponding scaling rules not found.
UnauthorizedOperation.CheckCamAuth	Unauthorized operation.

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