Class: Aws::EMR::Types::InstanceGroup

Inherits:

Struct

• Object
• Struct
• Aws::EMR::Types::InstanceGroup

Includes:

Structure

Defined in:

lib/aws-sdk-emr/types.rb

Overview

This entity represents an instance group, which is a group of instances that have common purpose. For example, CORE instance group is used for HDFS.

See Also:

• AWS API Documentation

Instance Attribute Summary

• #auto_scaling_policy ⇒ Types::AutoScalingPolicyDescription

  An automatic scaling policy for a core instance group or task instance group in an Amazon EMR cluster.

• #bid_price ⇒ String

  The maximum Spot price your are willing to pay for EC2 instances.

• #configurations ⇒ Array<Types::Configuration>

  <note markdown=“1”> Amazon EMR releases 4.x or later.

• #ebs_block_devices ⇒ Array<Types::EbsBlockDevice>

  The EBS block devices that are mapped to this instance group.

• #ebs_optimized ⇒ Boolean

  If the instance group is EBS-optimized.

• #id ⇒ String

  The identifier of the instance group.

• #instance_group_type ⇒ String

  The type of the instance group.

• #instance_type ⇒ String

  The EC2 instance type for all instances in the instance group.

• #market ⇒ String

  The marketplace to provision instances for this group.

• #name ⇒ String

  The name of the instance group.

• #requested_instance_count ⇒ Integer

  The target number of instances for the instance group.

• #running_instance_count ⇒ Integer

  The number of instances currently running in this instance group.

• #shrink_policy ⇒ Types::ShrinkPolicy

  Policy for customizing shrink operations.

• #status ⇒ Types::InstanceGroupStatus

  The current status of the instance group.

Instance Attribute Details

#auto_scaling_policy ⇒ Types::AutoScalingPolicyDescription

An automatic scaling policy for a core instance group or task instance group in an Amazon EMR cluster. The automatic scaling policy defines how an instance group dynamically adds and terminates EC2 instances in response to the value of a CloudWatch metric. See PutAutoScalingPolicy.

Returns:

• (Types::AutoScalingPolicyDescription)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#bid_price ⇒ String

The maximum Spot price your are willing to pay for EC2 instances.

An optional, nullable field that applies if the ‘MarketType` for the instance group is specified as `SPOT`. Specify the maximum spot price in USD. If the value is NULL and `SPOT` is specified, the maximum Spot price is set equal to the On-Demand price.

Returns:

• (String)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#configurations ⇒ Array<Types::Configuration>

<note markdown=“1”> Amazon EMR releases 4.x or later.

</note>

The list of configurations supplied for an EMR cluster instance group. You can specify a separate configuration for each instance group (master, core, and task).

Returns:

• (Array<Types::Configuration>)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#ebs_block_devices ⇒ Array<Types::EbsBlockDevice>

The EBS block devices that are mapped to this instance group.

Returns:

• (Array<Types::EbsBlockDevice>)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#ebs_optimized ⇒ Boolean

If the instance group is EBS-optimized. An Amazon EBS-optimized instance uses an optimized configuration stack and provides additional, dedicated capacity for Amazon EBS I/O.

Returns:

• (Boolean)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#id ⇒ String

The identifier of the instance group.

Returns:

• (String)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#instance_group_type ⇒ String

The type of the instance group. Valid values are MASTER, CORE or TASK.

Returns:

• (String)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#instance_type ⇒ String

The EC2 instance type for all instances in the instance group.

Returns:

• (String)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#market ⇒ String

The marketplace to provision instances for this group. Valid values are ON_DEMAND or SPOT.

Returns:

• (String)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#name ⇒ String

The name of the instance group.

Returns:

• (String)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#requested_instance_count ⇒ Integer

The target number of instances for the instance group.

Returns:

• (Integer)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#running_instance_count ⇒ Integer

The number of instances currently running in this instance group.

Returns:

• (Integer)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#shrink_policy ⇒ Types::ShrinkPolicy

Policy for customizing shrink operations.

Returns:

• (Types::ShrinkPolicy)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end

#status ⇒ Types::InstanceGroupStatus

The current status of the instance group.

Returns:

• (Types::InstanceGroupStatus)

# File 'lib/aws-sdk-emr/types.rb', line 2215

class InstanceGroup < Struct.new(
  :id,
  :name,
  :market,
  :instance_group_type,
  :bid_price,
  :instance_type,
  :requested_instance_count,
  :running_instance_count,
  :status,
  :configurations,
  :ebs_block_devices,
  :ebs_optimized,
  :shrink_policy,
  :auto_scaling_policy)
  include Aws::Structure
end