software.amazon.awscdk.services.emr

Interface CfnInstanceGroupConfig.AutoScalingPolicyProperty

All Known Implementing Classes:

CfnInstanceGroupConfig.AutoScalingPolicyProperty.Jsii$Proxy

Enclosing class:

CfnInstanceGroupConfig

public static interface CfnInstanceGroupConfig.AutoScalingPolicyProperty

`AutoScalingPolicy` defines how an instance group dynamically adds and terminates EC2 instances in response to the value of a CloudWatch metric.

For more information, see Using Automatic Scaling in Amazon EMR in the Amazon EMR Management Guide .

Example:

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.services.emr.*;
 AutoScalingPolicyProperty autoScalingPolicyProperty = AutoScalingPolicyProperty.builder()
         .constraints(ScalingConstraintsProperty.builder()
                 .maxCapacity(123)
                 .minCapacity(123)
                 .build())
         .rules(List.of(ScalingRuleProperty.builder()
                 .action(ScalingActionProperty.builder()
                         .simpleScalingPolicyConfiguration(SimpleScalingPolicyConfigurationProperty.builder()
                                 .scalingAdjustment(123)
                                 // the properties below are optional
                                 .adjustmentType("adjustmentType")
                                 .coolDown(123)
                                 .build())
                         // the properties below are optional
                         .market("market")
                         .build())
                 .name("name")
                 .trigger(ScalingTriggerProperty.builder()
                         .cloudWatchAlarmDefinition(CloudWatchAlarmDefinitionProperty.builder()
                                 .comparisonOperator("comparisonOperator")
                                 .metricName("metricName")
                                 .period(123)
                                 .threshold(123)
                                 // the properties below are optional
                                 .dimensions(List.of(MetricDimensionProperty.builder()
                                         .key("key")
                                         .value("value")
                                         .build()))
                                 .evaluationPeriods(123)
                                 .namespace("namespace")
                                 .statistic("statistic")
                                 .unit("unit")
                                 .build())
                         .build())
                 // the properties below are optional
                 .description("description")
                 .build()))
         .build();
 

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	CfnInstanceGroupConfig.AutoScalingPolicyProperty.Builder A builder for CfnInstanceGroupConfig.AutoScalingPolicyProperty
static class	CfnInstanceGroupConfig.AutoScalingPolicyProperty.Jsii$Proxy An implementation for CfnInstanceGroupConfig.AutoScalingPolicyProperty

Method Summary

Modifier and Type	Method and Description
static CfnInstanceGroupConfig.AutoScalingPolicyProperty.Builder	builder()
java.lang.Object	getConstraints() The upper and lower EC2 instance limits for an automatic scaling policy.
java.lang.Object	getRules() The scale-in and scale-out rules that comprise the automatic scaling policy.

Method Detail

getConstraints

java.lang.Object getConstraints()

The upper and lower EC2 instance limits for an automatic scaling policy.

Automatic scaling activity will not cause an instance group to grow above or below these limits.

getRules

java.lang.Object getRules()

The scale-in and scale-out rules that comprise the automatic scaling policy.

builder

static CfnInstanceGroupConfig.AutoScalingPolicyProperty.Builder builder()

Returns:

a CfnInstanceGroupConfig.AutoScalingPolicyProperty.Builder of CfnInstanceGroupConfig.AutoScalingPolicyProperty