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# AWS::KinesisAnalyticsV2::Application ParallelismConfiguration
<a name="aws-properties-kinesisanalyticsv2-application-parallelismconfiguration"></a>

Describes parameters for how a Flink-based Kinesis Data Analytics application executes multiple tasks simultaneously. For more information about parallelism, see [Parallel Execution](https://nightlies.apache.org/flink/flink-docs-master/docs/dev/datastream/execution/parallel/) in the [Apache Flink Documentation](https://nightlies.apache.org/flink/flink-docs-master).

## Syntax
<a name="aws-properties-kinesisanalyticsv2-application-parallelismconfiguration-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-kinesisanalyticsv2-application-parallelismconfiguration-syntax.json"></a>

```
{
  "[AutoScalingEnabled](#cfn-kinesisanalyticsv2-application-parallelismconfiguration-autoscalingenabled)" : Boolean,
  "[ConfigurationType](#cfn-kinesisanalyticsv2-application-parallelismconfiguration-configurationtype)" : String,
  "[Parallelism](#cfn-kinesisanalyticsv2-application-parallelismconfiguration-parallelism)" : Integer,
  "[ParallelismPerKPU](#cfn-kinesisanalyticsv2-application-parallelismconfiguration-parallelismperkpu)" : Integer
}
```

### YAML
<a name="aws-properties-kinesisanalyticsv2-application-parallelismconfiguration-syntax.yaml"></a>

```
  [AutoScalingEnabled](#cfn-kinesisanalyticsv2-application-parallelismconfiguration-autoscalingenabled): Boolean
  [ConfigurationType](#cfn-kinesisanalyticsv2-application-parallelismconfiguration-configurationtype): String
  [Parallelism](#cfn-kinesisanalyticsv2-application-parallelismconfiguration-parallelism): Integer
  [ParallelismPerKPU](#cfn-kinesisanalyticsv2-application-parallelismconfiguration-parallelismperkpu): Integer
```

## Properties
<a name="aws-properties-kinesisanalyticsv2-application-parallelismconfiguration-properties"></a>

`AutoScalingEnabled`  <a name="cfn-kinesisanalyticsv2-application-parallelismconfiguration-autoscalingenabled"></a>
Describes whether the Managed Service for Apache Flink service can increase the parallelism of the application in response to increased throughput.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ConfigurationType`  <a name="cfn-kinesisanalyticsv2-application-parallelismconfiguration-configurationtype"></a>
Describes whether the application uses the default parallelism for the Managed Service for Apache Flink service. You must set this property to `CUSTOM` in order to change your application's `AutoScalingEnabled`, `Parallelism`, or `ParallelismPerKPU` properties.  
*Required*: Yes  
*Type*: String  
*Allowed values*: `CUSTOM | DEFAULT`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Parallelism`  <a name="cfn-kinesisanalyticsv2-application-parallelismconfiguration-parallelism"></a>
Describes the initial number of parallel tasks that a Java-based Kinesis Data Analytics application can perform. The Kinesis Data Analytics service can increase this number automatically if [ParallelismConfiguration:AutoScalingEnabled](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_ParallelismConfiguration.html#kinesisanalytics-Type-ParallelismConfiguration-AutoScalingEnabled.html) is set to `true`.  
*Required*: No  
*Type*: Integer  
*Minimum*: `1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ParallelismPerKPU`  <a name="cfn-kinesisanalyticsv2-application-parallelismconfiguration-parallelismperkpu"></a>
Describes the number of parallel tasks that a Java-based Kinesis Data Analytics application can perform per Kinesis Processing Unit (KPU) used by the application. For more information about KPUs, see [Amazon Kinesis Data Analytics Pricing](https://aws.amazon.com/kinesis/data-analytics/pricing/).  
*Required*: No  
*Type*: Integer  
*Minimum*: `1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## See also
<a name="aws-properties-kinesisanalyticsv2-application-parallelismconfiguration--seealso"></a>
+ [ParallelismConfiguration](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_ParallelismConfiguration.html) in the *Amazon Kinesis Data Analytics API Reference*