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:StringCapacityReservationResourceGroupArn:StringUsageStrategy: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 | noneUpdate 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:
0Maximum:
256Update 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-firstUpdate requires: No interruption
