Source stage failures from connectivity or query errors

critical

Connection ManagementUpdated Feb 17, 2026(via Exa)

Sources

How to Monitor Cloud Data Fusion Pipeline Runs and Debug Failed ...oneuptime.com

Technologies:

Apache DataFusionsubject

Amazon S3Amazon S3 metrics correlate with this issue and help confirm diagnosis

How to detect:

Source stage fails due to database connectivity issues, invalid SQL queries, or insufficient GCS access permissions

Recommended action:

For database sources, test query directly against database. For GCS sources, verify file exists using gsutil ls, check Data Fusion service account has read permissions using gsutil cat