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    E-MapReduce:DecreaseNodes

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    E-MapReduce:DecreaseNodes

    Last Updated:Apr 19, 2024

    Perform a scale-out operation on the target node group.

    Debugging

    OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

    Authorization information

    There is currently no authorization information disclosed in the API.

    Request parameters

    ParameterTypeRequiredDescriptionExample
    RegionIdstringYes

    The ID of the region in which you want to create the instance.

    		cn-hangzhou
    ClusterIdstringYes

    The cluster ID.

    		c-b933c5aac8fe****
    NodeGroupIdstringYes

    The ID of the node group.

    		ng-869471354ecd****
    DecreaseNodeCountintegerNo

    The number of nodes to scale in. The number of nodes to be scaled in. The value should be less than the number of surviving nodes in the current node group.

    		3
    NodeIdsarrayNo

    The array of node IDs. Valid values of array element N: 1 to 500.

    stringNo

    The node ID.

    		i-bp1cudc25w2bfwl5****

    Response parameters

    ParameterTypeDescriptionExample
    object

    The data returned.

    OperationIdstring

    Operation ID.

    		op-13c37a77c505****
    RequestIdstring

    The ID of the request.

    		44430037-E59A-3E66-A2B0-97D155346F22

    Examples

    Sample success responses

    JSONformat

    {
  "OperationId": "op-13c37a77c505****",
  "RequestId": "44430037-E59A-3E66-A2B0-97D155346F22"
}

    Error codes

    HTTP status codeError codeError message
    400OperationDeniedThe operation is invalid. %s
    400ConcurrentModificationThe request on %s failed due to multiple requests to change this object were submitted simultaneously. Wait a few minutes and try again.
    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.