Package software.amazon.awscdk.services.stepfunctions.tasks

Interface EmrCreateCluster.AutoScalingPolicyProperty

All Superinterfaces:

software.amazon.jsii.JsiiSerializable

All Known Implementing Classes:

EmrCreateCluster.AutoScalingPolicyProperty.Jsii$Proxy

Enclosing class:

EmrCreateCluster

@Stability(Stable)
public static interface EmrCreateCluster.AutoScalingPolicyProperty
extends software.amazon.jsii.JsiiSerializable

An automatic scaling policy for a core instance group or task instance group in an Amazon EMR cluster.

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.stepfunctions.tasks.*;
 import software.amazon.awscdk.core.*;
 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(EmrCreateCluster.getScalingAdjustmentType().CHANGE_IN_CAPACITY)
                                 .coolDown(123)
                                 .build())
                         // the properties below are optional
                         .market(EmrCreateCluster.getInstanceMarket().ON_DEMAND)
                         .build())
                 .name("name")
                 .trigger(ScalingTriggerProperty.builder()
                         .cloudWatchAlarmDefinition(CloudWatchAlarmDefinitionProperty.builder()
                                 .comparisonOperator(EmrCreateCluster.getCloudWatchAlarmComparisonOperator().GREATER_THAN_OR_EQUAL)
                                 .metricName("metricName")
                                 .period(Duration.minutes(30))
                                 // the properties below are optional
                                 .dimensions(List.of(MetricDimensionProperty.builder()
                                         .key("key")
                                         .value("value")
                                         .build()))
                                 .evaluationPeriods(123)
                                 .namespace("namespace")
                                 .statistic(EmrCreateCluster.getCloudWatchAlarmStatistic().SAMPLE_COUNT)
                                 .threshold(123)
                                 .unit(EmrCreateCluster.getCloudWatchAlarmUnit().NONE)
                                 .build())
                         .build())
                 // the properties below are optional
                 .description("description")
                 .build()))
         .build();
 

See Also:

• https://docs.aws.amazon.com/emr/latest/APIReference/API_AutoScalingPolicy.html

Nested Class Summary

Nested Classes

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

Method Summary

Modifier and Type	Method	Description
static EmrCreateCluster.AutoScalingPolicyProperty.Builder	builder()
EmrCreateCluster.ScalingConstraintsProperty	getConstraints()	The upper and lower EC2 instance limits for an automatic scaling policy.
List<EmrCreateCluster.ScalingRuleProperty>	getRules()	The scale-in and scale-out rules that comprise the automatic scaling policy.

Methods inherited from interface software.amazon.jsii.JsiiSerializable

$jsii$toJson

Method Details

getConstraints

@Stability(Stable)
@NotNull
EmrCreateCluster.ScalingConstraintsProperty 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

@Stability(Stable)
@NotNull
List<EmrCreateCluster.ScalingRuleProperty> getRules()

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

builder

@Stability(Stable)
static EmrCreateCluster.AutoScalingPolicyProperty.Builder builder()

Returns:

a EmrCreateCluster.AutoScalingPolicyProperty.Builder of EmrCreateCluster.AutoScalingPolicyProperty