Amazon Elastic MapReduce
API Reference (API Version 2009-03-31)
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InstanceGroupDetail

Description

Detailed information about an instance group.

Contents

NameDescription
BidPrice

Bid price for EC2 Instances when launching nodes as Spot Instances, expressed in USD.

Type: String

Length constraints: Minimum length of 0. Maximum length of 256.

CreationDateTime

The date/time the instance group was created.

Type: DateTime

EndDateTime

The date/time the instance group was terminated.

Type: DateTime

InstanceGroupId

Unique identifier for the instance group.

Type: String

Length constraints: Minimum length of 0. Maximum length of 256.

InstanceRequestCount

Target number of instances to run in the instance group.

Type: Integer

InstanceRole

Instance group role in the cluster

Type: String

Valid Values: MASTER | CORE | TASK

InstanceRunningCount

Actual count of running instances.

Type: Integer

InstanceType

Amazon EC2 Instance type.

Type: String

Length constraints: Minimum length of 1. Maximum length of 256.

LastStateChangeReason

Details regarding the state of the instance group.

Type: String

Length constraints: Minimum length of 0. Maximum length of 10280.

Market

Market type of the Amazon EC2 instances used to create a cluster node.

Type: String

Valid Values: ON_DEMAND | SPOT

Name

Friendly name for the instance group.

Type: String

Length constraints: Minimum length of 0. Maximum length of 256.

ReadyDateTime

The date/time the instance group was available to the cluster.

Type: DateTime

StartDateTime

The date/time the instance group was started.

Type: DateTime

State

State of instance group.

Type: String

Valid Values: PROVISIONING | STARTING | BOOTSTRAPPING | RUNNING | RESIZING | ARRESTED | SHUTTING_DOWN | TERMINATED | FAILED | ENDED