software.amazon.awscdk.services.emr

Interface CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty

All Superinterfaces:

software.amazon.jsii.JsiiSerializable

All Known Implementing Classes:

CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty.Jsii$Proxy

Enclosing class:

CfnInstanceGroupConfig

@Stability(value=Stable)
public static interface CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty
extends software.amazon.jsii.JsiiSerializable

`SimpleScalingPolicyConfiguration` is a subproperty of the `ScalingAction` property type.

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.

Example:

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.services.emr.*;
 SimpleScalingPolicyConfigurationProperty simpleScalingPolicyConfigurationProperty = SimpleScalingPolicyConfigurationProperty.builder()
         .scalingAdjustment(123)
         // the properties below are optional
         .adjustmentType("adjustmentType")
         .coolDown(123)
         .build();
 

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty.Builder A builder for CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty
static class	CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty.Jsii$Proxy An implementation for CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty

Method Summary

Modifier and Type	Method and Description
static CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty.Builder	builder()
default String	getAdjustmentType() The way in which 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.
default Number	getCoolDown() The amount of time, in seconds, after a scaling activity completes before any further trigger-related scaling activities can start.
Number	getScalingAdjustment() The amount by which to scale in or scale out, based on the specified `AdjustmentType` .

Methods inherited from interface software.amazon.jsii.JsiiSerializable

$jsii$toJson

Method Detail

getScalingAdjustment

@Stability(value=Stable)
 @NotNull
Number getScalingAdjustment()

The amount by which to scale in or scale out, based on the specified `AdjustmentType` .

A positive value adds to the instance group's 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.

getAdjustmentType

@Stability(value=Stable)
 @Nullable
default String getAdjustmentType()

The way in which 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.

CHANGE_IN_CAPACITY is the default. CHANGE_IN_CAPACITY indicates that the 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 EC2 instances specified by ScalingAdjustment , which should be expressed as a positive integer.

getCoolDown

@Stability(value=Stable)
 @Nullable
default Number getCoolDown()

The amount of time, in seconds, after a scaling activity completes before any further trigger-related scaling activities can start.

The default value is 0.

builder

@Stability(value=Stable)
static CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty.Builder builder()

Returns:

a CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty.Builder of CfnInstanceGroupConfig.SimpleScalingPolicyConfigurationProperty