For example, if you create a delivery stream "MyStream" with Amazon Redshift as the destination and enable Kinesis Data Firehose error logging, the following are created on your behalf: a log group named aws/kinesisfirehose/MyStream and two log streams named S3Delivery and RedshiftDelivery. In this example, the S3Delivery log stream is used for logging errors related to delivery failure to the intermediate S3 bucket. The RedshiftDelivery log stream is used for logging errors related to Lambda invocation failure and delivery failure to your Amazon Redshift cluster.
っていうふうに書いてあるから、S3出力の時はS3DeliveryでログストリームをFirehose側で作成してくれるのかなと思ったらそんなことはなく
マネコンでS3出力でエラーログ有効にするとログストリーム名はDestinationDeliveryで固定っぽい。
