/AWS1/CL_EMRSIMPLESCAPLYCONF

An automatic scaling configuration, which describes how the policy adds or removes instances, the cooldown period, and the number of Amazon EC2 instances that will be added each time the CloudWatch metric alarm condition is satisfied.

CONSTRUCTOR

IMPORTING

Required arguments:

iv_scalingadjustment TYPE /AWS1/EMRINTEGER /AWS1/EMRINTEGER

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

Optional arguments:

iv_adjustmenttype TYPE /AWS1/EMRADJUSTMENTTYPE /AWS1/EMRADJUSTMENTTYPE

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. 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.

iv_cooldown TYPE /AWS1/EMRINTEGER /AWS1/EMRINTEGER

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.

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Queryable Attributes

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. 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.

Accessible with the following methods

Method	Description
GET_ADJUSTMENTTYPE()	Getter for ADJUSTMENTTYPE, with configurable default
ASK_ADJUSTMENTTYPE()	Getter for ADJUSTMENTTYPE w/ exceptions if field has no valu
HAS_ADJUSTMENTTYPE()	Determine if ADJUSTMENTTYPE has a value

ScalingAdjustment

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

Accessible with the following methods

Method	Description
GET_SCALINGADJUSTMENT()	Getter for SCALINGADJUSTMENT, with configurable default
ASK_SCALINGADJUSTMENT()	Getter for SCALINGADJUSTMENT w/ exceptions if field has no v
HAS_SCALINGADJUSTMENT()	Determine if SCALINGADJUSTMENT has a value

CoolDown

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.

Accessible with the following methods

Method	Description
GET_COOLDOWN()	Getter for COOLDOWN, with configurable default
ASK_COOLDOWN()	Getter for COOLDOWN w/ exceptions if field has no value
HAS_COOLDOWN()	Determine if COOLDOWN has a value