Amazon EMR Cluster ScalingRule
The ScalingRule property type represents a scale-in or scale-out rule that defines scaling activity,
including the CloudWatch metric alarm that triggers activity,
how Amazon EC2 instances are added or removed, and the periodicity of adjustments.
The Rules subproperty of the Amazon EMR Cluster
JobFlowInstancesConfig property contains a list of one or more ScalingRule property types.
Syntax
JSON
{ "Action" :ScalingAction, "Description" :String, "Name" :String, "Trigger" :ScalingTrigger}
YAML
Action:ScalingActionDescription:StringName:StringTrigger:ScalingTrigger
Properties
Action-
The conditions that trigger an automatic scaling activity.
Required: Yes
Description-
A friendly, more verbose description of the automatic scaling rule.
Required: No
Type: String
Name-
The name used to identify an automatic scaling rule. Rule names must be unique within a scaling policy.
Required: Yes
Type: String
Trigger-
The CloudWatch alarm definition that determines when automatic scaling activity is triggered.
Required: Yes
