Have Your Iceberg Cubed, Not Sorted: Meet Qbeast, the OTree Spatial Index
5 hours ago
- #data indexing
- #open table formats
- #lakehouse
- Qbeast introduces an adaptive multidimensional indexing technique called OTree for open table formats like Apache Iceberg and Delta Lake.
- OTree organizes data into hypercubes that subdivide based on data distribution, addressing issues like partition granularity, imbalance, and drift.
- The index governs table layout by mapping rows to normalized coordinates in multidimensional space, ensuring data locality without requiring engine integration.
- OTree metadata is stored alongside standard table metadata, allowing existing query engines to function unchanged while optimizing write-time data organization.
- This approach bridges the gap between rigid B-tree indexes and static clustering strategies, offering a lightweight, adaptive solution for lakehouse performance.