Class: Aws::EMR::Types::SimpleScalingPolicyConfiguration

Inherits:

Struct

• Object
• Struct
• Aws::EMR::Types::SimpleScalingPolicyConfiguration

Includes:

Structure

Defined in:

lib/aws-sdk-emr/types.rb

Overview

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.

See Also:

• AWS API Documentation

Constant Summary

SENSITIVE =

[]

Instance Attribute Summary

• #adjustment_type ⇒ String

  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.

• #cool_down ⇒ Integer

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

• #scaling_adjustment ⇒ Integer

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

Instance Attribute Details

#adjustment_type ⇒ String

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.

Returns:

• (String)

# File 'lib/aws-sdk-emr/types.rb', line 6093

class SimpleScalingPolicyConfiguration < Struct.new(
  :adjustment_type,
  :scaling_adjustment,
  :cool_down)
  SENSITIVE = []
  include Aws::Structure
end

#cool_down ⇒ Integer

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.

Returns:

• (Integer)

# File 'lib/aws-sdk-emr/types.rb', line 6093

class SimpleScalingPolicyConfiguration < Struct.new(
  :adjustment_type,
  :scaling_adjustment,
  :cool_down)
  SENSITIVE = []
  include Aws::Structure
end

#scaling_adjustment ⇒ Integer

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.

Returns:

• (Integer)

# File 'lib/aws-sdk-emr/types.rb', line 6093

class SimpleScalingPolicyConfiguration < Struct.new(
  :adjustment_type,
  :scaling_adjustment,
  :cool_down)
  SENSITIVE = []
  include Aws::Structure
end