Why Does a Data Pipeline Process the Same File More Than Once?

Repeated file processing can occur when arrival notifications are duplicated, a completion marker is missing, or a retry starts before the prior run is recorded.

What to check

Compare file identifiers, checksums, run IDs, object timestamps, and job retry history. Check whether a partial failure leaves the source file available for another trigger.

Recommended next step

Use a durable processed-file ledger or idempotent load key and alert on unexpected replays. Informatix Systems can improve data pipeline reliability and reconciliation.