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E-MapReduce:GetAutoScalingActivity

Last Updated:Oct 28, 2024

Debugging

You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • The required resource types are displayed in bold characters.
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
emr:GetAutoScalingActivityget
  • All Resources
    *
    none
none

Request parameters

ParameterTypeRequiredDescriptionExample
RegionIdstringYes

The region ID.

cn-hangzhou
ClusterIdstringYes

The cluster ID.

c-b933c5aac8fe****
ScalingActivityIdstringYes

The ID of the scaling activity.

asa-36373b084d6b4b13aa50f4129a9e****

Response parameters

ParameterTypeDescriptionExample
object

The response parameters.

ScalingActivityobject

The information about the scaling activity.

ActivityIdstring

The ID of the scaling activity.

asa-36373b084d6b4b13aa50f4129a9e****
RuleNamestring

The name of the scaling rule.

scaling-out-memory
RuleDetailScalingRule

The description of the scaling rule.

ActivityTypestring

The type of the scaling activity. Valid value:

  • SCALE_OUT
  • SCALE_IN
SCALE_OUT
ClusterIdstring

The cluster ID.

c-b933c5aac8fe****
NodeGroupIdstring

The ID of the node group.

ng-869471354ecd****
NodeGroupNamestring

The name of the node group.

task-01
StartTimelong

The time when scaling started.

1639714634819
EndTimelong

The time when scaling ended.

1639715634819
ActivityStatestring

The status of the scaling activity. Valid values:

  • REJECTED
  • SUCCESSFUL
  • FAILED
  • IN_PROGRESS
IN_PROGRESS
ExpectNuminteger

The number of added or removed instances.

10
OperationIdstring

The operation ID.

op-13c37a77c505****
Descriptionstring

The description of the scaling activity.

clusterId not exist
ActivityResultsarray

The instances that correspond to the scaling activity.

ScalingActivityResultScalingActivityResult

The instance that corresponds to the scaling activity.

RequestIdstring

The request ID.

DD6B1B2A-5837-5237-ABE4-FF0C8944****

Examples

Sample success responses

JSONformat

{
  "ScalingActivity": {
    "ActivityId": "asa-36373b084d6b4b13aa50f4129a9e****",
    "RuleName": "scaling-out-memory",
    "RuleDetail": {
      "RuleName": "scale-out-memory",
      "TriggerType": "TIME_TRIGGER",
      "ActivityType": "SCALE_IN",
      "AdjustmentType": "CHANGE_IN_CAPACITY",
      "AdjustmentValue": 100,
      "TimeTrigger": {
        "LaunchTime": "",
        "StartTime": 1639714800000,
        "EndTime": 1639714800000,
        "LaunchExpirationTime": 600,
        "RecurrenceType": "WEEKLY",
        "RecurrenceValue": "MON,FRI,SUN"
      },
      "MetricsTrigger": {
        "TimeWindow": 30,
        "EvaluationCount": 2,
        "CoolDownInterval": 300,
        "TimeConstraints": [
          {
            "StartTime": "06:00:00",
            "EndTime": "23:59:59"
          }
        ],
        "ConditionLogicOperator": "Or",
        "Conditions": [
          {
            "MetricName": "yarn_resourcemanager_root_availablememoryusage",
            "Tags": [
              {
                "Key": "department",
                "Value": "IT"
              }
            ],
            "Statistics": "AVG",
            "ComparisonOperator": "LT",
            "Threshold": 12.5
          }
        ]
      },
      "MinAdjustmentValue": 1
    },
    "ActivityType": "SCALE_OUT",
    "ClusterId": "c-b933c5aac8fe****",
    "NodeGroupId": "ng-869471354ecd****",
    "NodeGroupName": "task-01",
    "StartTime": 1639714634819,
    "EndTime": 1639715634819,
    "ActivityState": "IN_PROGRESS",
    "ExpectNum": 10,
    "OperationId": "op-13c37a77c505****",
    "Description": "clusterId not exist",
    "ActivityResults": [
      {
        "InstanceId": "i-bp1cudc25w2bfwl5****"
      }
    ],
    "PolicyType": ""
  },
  "RequestId": "DD6B1B2A-5837-5237-ABE4-FF0C8944****"
}

Error codes

HTTP status codeError codeError message
400ConflictParametersParameters that must not be used together. %s
400IncompleteSignatureThe request signature is invalid.
400InvalidActionThe action %s requested is invalid.
400InvalidParameterThe specified parameter %s is not valid.
400InvalidParameterValueThe input parameter %s is invalid or out of range.
400MissingActionThe action %s requested is missing.
400MissingParameterThe input parameter %s that is mandatory for processing this request is not supplied.
400NotAuthorizedYou do not have permission to perform this action. %s
400ThrottlingExceptionThe request was denied due to request throttling. %s
404ResourceNotFoundThe resource not found by %s.
500InternalErrorThe request processing has failed due to some unknown error, exception or failure.
503ServiceFailureThe request has failed due to a temporary failure of %s service.
503ServiceUnavailableThe request has failed due to a temporary failure of the server.

For a list of error codes, visit the Service error codes.

Change history

Change timeSummary of changesOperation
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