The name of a custom stage to use during bulk write operations.
The name of a custom stage to use during bulk write operations. This can be an internal or external stage. If the stage is external, the AWS or Azure credentials must be provided as well via the ExternalStageAWSAccessKey/ExternalStageAWSSecretKey or ExternalStageAzureAccessKey properties.
When this is left unspecified, the driver will generate a temporay stage automatically during the upload process and delete it after the upload is complete.