AWS SDK Version 3 for .NET
API Reference

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Describes an instance fleet, which is a group of Amazon EC2 instances that host a particular node type (master, core, or task) in an Amazon EMR cluster. Instance fleets can consist of a mix of instance types and On-Demand and Spot Instances, which are provisioned to meet a defined target capacity.

The instance fleet configuration is available only in Amazon EMR releases 4.8.0 and later, excluding 5.0.x versions.

Inheritance Hierarchy

System.Object
  Amazon.ElasticMapReduce.Model.InstanceFleet

Namespace: Amazon.ElasticMapReduce.Model
Assembly: AWSSDK.ElasticMapReduce.dll
Version: 3.x.y.z

Syntax

C# 
public class InstanceFleet

The InstanceFleet type exposes the following members

Constructors

NameDescription
Public Method InstanceFleet()

Properties

NameTypeDescription
Public Property Id System.String

Gets and sets the property Id.

The unique identifier of the instance fleet.

Public Property InstanceFleetType Amazon.ElasticMapReduce.InstanceFleetType

Gets and sets the property InstanceFleetType.

The node type that the instance fleet hosts. Valid values are MASTER, CORE, or TASK.

Public Property InstanceTypeSpecifications System.Collections.Generic.List<Amazon.ElasticMapReduce.Model.InstanceTypeSpecification>

Gets and sets the property InstanceTypeSpecifications.

An array of specifications for the instance types that comprise an instance fleet.

Public Property LaunchSpecifications Amazon.ElasticMapReduce.Model.InstanceFleetProvisioningSpecifications

Gets and sets the property LaunchSpecifications.

Describes the launch specification for an instance fleet.

Public Property Name System.String

Gets and sets the property Name.

A friendly name for the instance fleet.

Public Property ProvisionedOnDemandCapacity System.Int32

Gets and sets the property ProvisionedOnDemandCapacity.

The number of On-Demand units that have been provisioned for the instance fleet to fulfill TargetOnDemandCapacity. This provisioned capacity might be less than or greater than TargetOnDemandCapacity.

Public Property ProvisionedSpotCapacity System.Int32

Gets and sets the property ProvisionedSpotCapacity.

The number of Spot units that have been provisioned for this instance fleet to fulfill TargetSpotCapacity. This provisioned capacity might be less than or greater than TargetSpotCapacity.

Public Property ResizeSpecifications Amazon.ElasticMapReduce.Model.InstanceFleetResizingSpecifications

Gets and sets the property ResizeSpecifications.

The resize specification for the instance fleet.

Public Property Status Amazon.ElasticMapReduce.Model.InstanceFleetStatus

Gets and sets the property Status.

The current status of the instance fleet.

Public Property TargetOnDemandCapacity System.Int32

Gets and sets the property TargetOnDemandCapacity.

The target capacity of On-Demand units for the instance fleet, which determines how many On-Demand Instances to provision. When the instance fleet launches, Amazon EMR tries to provision On-Demand Instances as specified by InstanceTypeConfig. Each instance configuration has a specified WeightedCapacity. When an On-Demand Instance is provisioned, the WeightedCapacity units count toward the target capacity. Amazon EMR provisions instances until the target capacity is totally fulfilled, even if this results in an overage. For example, if there are 2 units remaining to fulfill capacity, and Amazon EMR can only provision an instance with a WeightedCapacity of 5 units, the instance is provisioned, and the target capacity is exceeded by 3 units. You can use InstanceFleet$ProvisionedOnDemandCapacity to determine the Spot capacity units that have been provisioned for the instance fleet.

If not specified or set to 0, only Spot Instances are provisioned for the instance fleet using TargetSpotCapacity. At least one of TargetSpotCapacity and TargetOnDemandCapacity should be greater than 0. For a master instance fleet, only one of TargetSpotCapacity and TargetOnDemandCapacity can be specified, and its value must be 1.

Public Property TargetSpotCapacity System.Int32

Gets and sets the property TargetSpotCapacity.

The target capacity of Spot units for the instance fleet, which determines how many Spot Instances to provision. When the instance fleet launches, Amazon EMR tries to provision Spot Instances as specified by InstanceTypeConfig. Each instance configuration has a specified WeightedCapacity. When a Spot instance is provisioned, the WeightedCapacity units count toward the target capacity. Amazon EMR provisions instances until the target capacity is totally fulfilled, even if this results in an overage. For example, if there are 2 units remaining to fulfill capacity, and Amazon EMR can only provision an instance with a WeightedCapacity of 5 units, the instance is provisioned, and the target capacity is exceeded by 3 units. You can use InstanceFleet$ProvisionedSpotCapacity to determine the Spot capacity units that have been provisioned for the instance fleet.

If not specified or set to 0, only On-Demand Instances are provisioned for the instance fleet. At least one of TargetSpotCapacity and TargetOnDemandCapacity should be greater than 0. For a master instance fleet, only one of TargetSpotCapacity and TargetOnDemandCapacity can be specified, and its value must be 1.

Version Information

.NET Core App:
Supported in: 3.1

.NET Standard:
Supported in: 2.0

.NET Framework:
Supported in: 4.5, 4.0, 3.5