OnDemandCapacityReservationOptionsProperty Struct
Describes the strategy for using unused Capacity Reservations for fulfilling On-Demand capacity.
Example
ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_emr as emr } from 'aws-cdk-lib';
const onDemandCapacityReservationOptionsProperty: emr.CfnInstanceFleetConfig.OnDemandCapacityReservationOptionsProperty = {
capacityReservationPreference: 'capacityReservationPreference',
capacityReservationResourceGroupArn: 'capacityReservationResourceGroupArn',
usageStrategy: 'usageStrategy',
};
Properties
capacityReservationPreferenceoptionalstringcapacity_reservation_preferenceoptionalstrcapacityReservationPreferenceoptionalStringCapacityReservationPreferenceoptionalstringCapacityReservationPreferenceoptional*string#Indicates the instance's Capacity Reservation preferences. Possible preferences include:.
notes
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.
capacityReservationResourceGroupArnoptionalstringcapacity_reservation_resource_group_arnoptionalstrcapacityReservationResourceGroupArnoptionalStringCapacityReservationResourceGroupArnoptionalstringCapacityReservationResourceGroupArnoptional*string#The ARN of the Capacity Reservation resource group in which to run the instance.
usageStrategyoptionalstringusage_strategyoptionalstrusageStrategyoptionalStringUsageStrategyoptionalstringUsageStrategyoptional*string#Indicates whether to use unused Capacity Reservations for fulfilling On-Demand capacity.
notes
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.