1. Logging Standards
- Consistent log formats across all jobs.
- Meaningful messages—not just “success” or “step failed.”
- Include metadata such as batch ID, partition, and source/target details.
2. Error Handling & Recoverability
- Clear distinction between retryable and non-retryable failures.
- Structured error messages fed into monitoring systems.
- Documentation of common failure scenarios and required operator actions.
3. Monitoring & Alerts
- Pipelines emit metrics for run time, rows processed, and error counts.
- Alerts routed to specific owners with action steps.
- No “alert floods”—each alert must be actionable and specific.
4. Staging, Temp Data & Cleanup
- Temporary files and tables are archived or deleted per policy.
- Growth of staging areas is monitored proactively.
- Fallback processes exist for stuck or orphaned artifacts.
- Baseline expected throughput and run time for each job.
- Monitor trends—unexpected growth can signal source issues.
- Document performance assumptions for future maintainers.
Housekeeping is where quality becomes operational reality. Automated quality and housekeeping checks prevent silent failures, reduce incident volume, and give on-call engineers the visibility they need to respond quickly.