When something fails, tracing the issue takes hours.
Logs are scattered across systems.
Reproducing failures is painful.
Debugging feels reactive.
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Debuggable pipelines favor transparency over cleverness.
Break pipelines into clear, observable steps with explicit inputs and outputs. Log metadata at each stage and persist intermediate artifacts where feasible.
Avoid monolithic jobs that hide failure points.
Common mistakes include:
Over-optimizing pipelines too early
Skipping intermediate outputs
Logging only errors
The takeaway is that debuggability is a design choice, not an afterthought.