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 bid price for each EC2 Spot instance type as defined by
InstanceType. Expressed in USD. If neitherBidPricenorBidPriceAsPercentageOfOnDemandPriceis provided,BidPriceAsPercentageOfOnDemandPricedefaults to 100%.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:
