Placement group configuration for an Amazon EMR cluster. The configuration specifies the placement strategy that can be applied to instance roles during cluster creation.
To use this configuration, consider attaching managed policy AmazonElasticMapReducePlacementGroupPolicy to the Amazon EMR role.
Syntax
To declare this entity in your AWS CloudFormation template, use the following syntax:
JSON
{
"InstanceRole" : String,
"PlacementStrategy" : String
}
YAML
InstanceRole: String
PlacementStrategy: String
Properties
InstanceRole-
Role of the instance in the cluster.
Starting with Amazon EMR release 5.23.0, the only supported instance role is
MASTER.Required: Yes
Type: String
Allowed values:
MASTER | CORE | TASKUpdate requires: Replacement
PlacementStrategy-
Amazon EC2 Placement Group strategy associated with instance role.
Starting with Amazon EMR release 5.23.0, the only supported placement strategy is
SPREADfor theMASTERinstance role.Required: No
Type: String
Allowed values:
SPREAD | PARTITION | CLUSTER | NONEUpdate requires: Replacement
