# AdditionalS3DataSource
<a name="API_AdditionalS3DataSource"></a>

A data source used for training or inference that is in addition to the input dataset or model data.

## Contents
<a name="API_AdditionalS3DataSource_Contents"></a>

 ** S3DataType **   <a name="sagemaker-Type-AdditionalS3DataSource-S3DataType"></a>
The data type of the additional data source that you specify for use in inference or training.   
Type: String  
Valid Values: `S3Object | S3Prefix`   
Required: Yes

 ** S3Uri **   <a name="sagemaker-Type-AdditionalS3DataSource-S3Uri"></a>
The uniform resource identifier (URI) used to identify an additional data source used in inference or training.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 1024.  
Pattern: `(https|s3)://([^/]+)/?(.*)`   
Required: Yes

 ** CompressionType **   <a name="sagemaker-Type-AdditionalS3DataSource-CompressionType"></a>
The type of compression used for an additional data source used in inference or training. Specify `None` if your additional data source is not compressed.  
Type: String  
Valid Values: `None | Gzip`   
Required: No

 ** ETag **   <a name="sagemaker-Type-AdditionalS3DataSource-ETag"></a>
The ETag associated with S3 URI.  
Type: String  
Required: No

## See Also
<a name="API_AdditionalS3DataSource_SeeAlso"></a>

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/sagemaker-2017-07-24/AdditionalS3DataSource) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/sagemaker-2017-07-24/AdditionalS3DataSource) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/sagemaker-2017-07-24/AdditionalS3DataSource)