# ParallelismConfigurationUpdate
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Describes updates to parameters for how an application executes multiple tasks simultaneously.

## Contents
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 ** AutoScalingEnabledUpdate **   <a name="APIReference-Type-ParallelismConfigurationUpdate-AutoScalingEnabledUpdate"></a>
Describes updates to whether the Managed Service for Apache Flink service can increase the parallelism of a Managed Service for Apache Flink application in response to increased throughput.  
Type: Boolean  
Required: No

 ** ConfigurationTypeUpdate **   <a name="APIReference-Type-ParallelismConfigurationUpdate-ConfigurationTypeUpdate"></a>
Describes updates to whether the application uses the default parallelism for the Managed Service for Apache Flink service, or if a custom parallelism is used. You must set this property to `CUSTOM` in order to change your application's `AutoScalingEnabled`, `Parallelism`, or `ParallelismPerKPU` properties.  
Type: String  
Valid Values: `DEFAULT | CUSTOM`   
Required: No

 ** ParallelismPerKPUUpdate **   <a name="APIReference-Type-ParallelismConfigurationUpdate-ParallelismPerKPUUpdate"></a>
Describes updates to the number of parallel tasks an application can perform per Kinesis Processing Unit (KPU) used by the application.  
Type: Integer  
Valid Range: Minimum value of 1.  
Required: No

 ** ParallelismUpdate **   <a name="APIReference-Type-ParallelismConfigurationUpdate-ParallelismUpdate"></a>
Describes updates to the initial number of parallel tasks an application can perform. If `AutoScalingEnabled` is set to True, then Managed Service for Apache Flink can increase the `CurrentParallelism` value in response to application load. The service can increase `CurrentParallelism` up to the maximum parallelism, which is `ParalellismPerKPU` times the maximum KPUs for the application. The maximum KPUs for an application is 32 by default, and can be increased by requesting a limit increase. If application load is reduced, the service will reduce `CurrentParallelism` down to the `Parallelism` setting.  
Type: Integer  
Valid Range: Minimum value of 1.  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/kinesisanalyticsv2-2018-05-23/ParallelismConfigurationUpdate) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/kinesisanalyticsv2-2018-05-23/ParallelismConfigurationUpdate) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/kinesisanalyticsv2-2018-05-23/ParallelismConfigurationUpdate)