Apache Data Lakehouse Weekly: June 9 to 16, 2026

Short summary

Apache data lakehouse projects underwent a maturation week focused on governance improvements and performance optimization. Iceberg shipped C++ 0.3.0 RC3, clarified partition transform specs to date types, and advanced deletion vector work through draft bitmap specifications. The projects collectively prioritized unglamorous infrastructure—error codes, retention policies, CI budgets, and schema evolution—over launch announcements, demonstrating the foundational work required for production-grade data systems.

• •Maturation-focused week on governance and performance, not marketing launches
• •Iceberg shipped C++ 0.3.0 and advanced deletion vectors and spec clarifications
• •Infrastructure investments in error handling, CI budgets, and schema evolution

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