InstanceGroupConfig
Configuration defining a new instance group.
Contents
- AutoScalingPolicy
-
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.
Type: AutoScalingPolicy object
Required: No
- BidPrice
-
The maximum Spot price your are willing to pay for EC2 instances.
If
BidPriceis specified, Amazon EMR uses Spot Instances for the instance group. Specified in USD. Alternatively, a value ofOnDemandPriceindicates that the maximum Spot price is set equal to the On-Demand price.Type: String
Length Constraints: Minimum length of 0. Maximum length of 256.
Pattern:
[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*Required: No
- Configurations
-
Note
Amazon EMR releases 4.x or later.
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).
Type: Array of Configuration objects
Required: No
- EbsConfiguration
-
EBS configurations that will be attached to each EC2 instance in the instance group.
Type: EbsConfiguration object
Required: No
- InstanceCount
-
Target number of instances for the instance group.
Type: Integer
Required: Yes
- InstanceRole
-
The role of the instance group in the cluster.
Type: String
Valid Values:
MASTER | CORE | TASKRequired: Yes
- InstanceType
-
The EC2 instance type for all instances in the instance group.
Type: String
Length Constraints: Minimum length of 1. Maximum length of 256.
Pattern:
[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*Required: Yes
- Market
-
Market type of the EC2 instances used to create a cluster node.
Type: String
Valid Values:
ON_DEMAND | SPOTRequired: No
- Name
-
Friendly name given to the instance group.
Type: String
Length Constraints: Minimum length of 0. Maximum length of 256.
Pattern:
[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*Required: No
See Also
For more information about using this API in one of the language-specific AWS SDKs, see the following:
