# Amazon CloudWatch metrics
<a name="msk-data-delivery-iceberg-metrics"></a>


| Metric name | Description | Unit | 
| --- | --- | --- | 
| `DeliveryToIceberg.DataFreshness` | Age of the oldest record delivered; rising values indicate delivery lag or stall. | Seconds | 
| `DeliveryToIceberg.BytesIn` | Volume read into the delivery path. | Bytes | 
| `DeliveryToIceberg.BytesProcessed` | Volume processed. | Bytes | 
| `DeliveryToIceberg.BytesOut` | Volume written to the destination. | Bytes | 
| `DeliveryToIceberg.TotalRowCount` | Total rows seen. | Count | 
| `DeliveryToIceberg.SuccessfulRowCount` | Rows delivered successfully. | Count | 
| `DeliveryToIceberg.FailedRowCount` | Rows that failed delivery; non-zero is the key error signal. | Count | 
| `DeliveryToIceberg.CommitSuccess` | Successful Iceberg commits. | Count | 
| `DeliveryToIceberg.DLQDeliverySuccess` | Records successfully routed to the dead-letter queue. | Count |