AWS::EMR::Cluster OnDemandCapacityReservationOptions

Describes the strategy for using unused Capacity Reservations for fulfilling On-Demand capacity.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{
  "CapacityReservationPreference" : String,
  "CapacityReservationResourceGroupArn" : String,
  "UsageStrategy" : String
}

YAML

  CapacityReservationPreference: String
  CapacityReservationResourceGroupArn: String
  UsageStrategy: String

Properties

CapacityReservationPreference

Indicates the instance's Capacity Reservation preferences. Possible preferences include:

• open - The instance can run in any open Capacity Reservation that has matching attributes (instance type, platform, Availability Zone).

• none - The instance avoids running in a Capacity Reservation even if one is available. The instance runs as an On-Demand Instance.

Required: No

Type: String

Allowed values: open | none

Update requires: No interruption

CapacityReservationResourceGroupArn

The ARN of the Capacity Reservation resource group in which to run the instance.

Required: No

Type: String

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Minimum: 0

Maximum: 256

Update requires: No interruption

UsageStrategy

Indicates whether to use unused Capacity Reservations for fulfilling On-Demand capacity.

If you specify use-capacity-reservations-first, the fleet uses unused Capacity Reservations to fulfill On-Demand capacity up to the target On-Demand capacity. If multiple instance pools have unused Capacity Reservations, the On-Demand allocation strategy (lowest-price) is applied. If the number of unused Capacity Reservations is less than the On-Demand target capacity, the remaining On-Demand target capacity is launched according to the On-Demand allocation strategy (lowest-price).

If you do not specify a value, the fleet fulfills the On-Demand capacity according to the chosen On-Demand allocation strategy.

Required: No

Type: String

Allowed values: use-capacity-reservations-first

Update requires: No interruption