software.amazon.awscdk.services.stepfunctions.tasks

Interface EmrCreateCluster.AutoScalingPolicyProperty

All Known Implementing Classes:

EmrCreateCluster.AutoScalingPolicyProperty.Jsii$Proxy

Enclosing class:

EmrCreateCluster

public static interface EmrCreateCluster.AutoScalingPolicyProperty

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

Method Summary

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

Method Detail

getConstraints

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

java.util.List<EmrCreateCluster.ScalingRuleProperty> getRules()

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

builder

static EmrCreateCluster.AutoScalingPolicyProperty.Builder builder()

Returns:

a EmrCreateCluster.AutoScalingPolicyProperty.Builder of EmrCreateCluster.AutoScalingPolicyProperty