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AWS CloudFormation
User Guide (API Version 2010-05-15)

Amazon EMR Cluster ScalingTrigger

ScalingTrigger is a subproperty of the Amazon EMR Cluster JobFlowInstancesConfig AutoScalingPolicy Constraints ScalingRule property that specifies the conditions that trigger an automatic scaling activity.

Syntax

JSON

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{ "CloudWatchAlarmDefinition" : CloudWatchAlarmDefinition }

YAML

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CloudWatchAlarmDefinition: CloudWatchAlarmDefinition

Properties

CloudWatchAlarmDefinition

The definition of a CloudWatch metric alarm. When the defined alarm conditions are met along with other trigger parameters, scaling activity begins.

Required: Yes

Type: Amazon EMR Cluster CloudWatchAlarmDefinition

Update requires: No interruption

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