The Challenge
Where things stood before
Delta Lake workloads suffered chronic skew, 20-minute job runtimes and cluster hotspots blocking downstream analytics and ML feature refresh.
Our Approach
How we engineered the outcome
- Introduced Z-Ordering and adaptive partitioning on hot dimensions.
- Implemented compaction and OPTIMIZE schedules with vacuum retention tuned to workload.
- Rebuilt Silver → Gold transformations in dbt with tests and lineage.
- Rebalanced executor allocation to eliminate hotspots.
The Outcomes
Measurable business impact
70%
Lower Delta runtime
20→4 min
Job runtime reduction
60–70%
Analytics performance gain
100%
Pipeline reliability
