Class CfnCluster.SimpleScalingPolicyConfigurationProperty
SimpleScalingPolicyConfiguration is a subproperty of the ScalingAction property type.
Inheritance
Namespace: Amazon.CDK.AWS.EMR
Assembly: Amazon.CDK.Lib.dll
Syntax (csharp)
public class SimpleScalingPolicyConfigurationProperty : Object, CfnCluster.ISimpleScalingPolicyConfigurationPropertySyntax (vb)
Public Class SimpleScalingPolicyConfigurationProperty
Inherits Object
Implements CfnCluster.ISimpleScalingPolicyConfigurationPropertyRemarks
SimpleScalingPolicyConfiguration determines how an automatic scaling action adds or removes instances, the cooldown period, and the number of EC2 instances that are added each time the CloudWatch metric alarm condition is satisfied.
ExampleMetadata: fixture=_generated
Examples
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
using Amazon.CDK.AWS.EMR;
var simpleScalingPolicyConfigurationProperty = new SimpleScalingPolicyConfigurationProperty {
ScalingAdjustment = 123,
// the properties below are optional
AdjustmentType = "adjustmentType",
CoolDown = 123
};Synopsis
Constructors
| Simple |
Properties
| Adjustment |
The way in which Amazon EC2 instances are added (if |
| Cool |
The amount of time, in seconds, after a scaling activity completes before any further trigger-related scaling activities can start. |
| Scaling |
The amount by which to scale in or scale out, based on the specified |
Constructors
SimpleScalingPolicyConfigurationProperty()
public SimpleScalingPolicyConfigurationProperty()Properties
AdjustmentType
The way in which Amazon EC2 instances are added (if ScalingAdjustment is a positive number) or terminated (if ScalingAdjustment is a negative number) each time the scaling activity is triggered.
public string AdjustmentType { get; set; }Property Value
System.
Remarks
CHANGE_IN_CAPACITY is the default. CHANGE_IN_CAPACITY indicates that the Amazon EC2 instance count increments or decrements by ScalingAdjustment , which should be expressed as an integer. PERCENT_CHANGE_IN_CAPACITY indicates the instance count increments or decrements by the percentage specified by ScalingAdjustment , which should be expressed as an integer. For example, 20 indicates an increase in 20% increments of cluster capacity. EXACT_CAPACITY indicates the scaling activity results in an instance group with the number of Amazon EC2 instances specified by ScalingAdjustment , which should be expressed as a positive integer.
CoolDown
The amount of time, in seconds, after a scaling activity completes before any further trigger-related scaling activities can start.
public Nullable<double> CoolDown { get; set; }Property Value
System.
Remarks
ScalingAdjustment
The amount by which to scale in or scale out, based on the specified AdjustmentType .
public double ScalingAdjustment { get; set; }Property Value
System.
Remarks
A positive value adds to the instance group's Amazon EC2 instance count while a negative number removes instances. If AdjustmentType is set to EXACT_CAPACITY , the number should only be a positive integer. If AdjustmentType is set to PERCENT_CHANGE_IN_CAPACITY , the value should express the percentage as an integer. For example, -20 indicates a decrease in 20% increments of cluster capacity.