Iceberg Is Escaping the JVM: Why Rust, Go, Python and C++ Implementations Matter
Rust, Go, Python, and C++ Iceberg implementations change who can write the format. Why multi-language clients matter more than another JVM engine.
The archive
Writing, page 9
652 posts on Apache Iceberg, lakehouse architecture, data engineering and applied AI.
The Iceberg REST Catalog Compatibility Test: One Suite of Operations Every Platform Should Pass
One suite of REST catalog operations every Iceberg platform should pass. What sameness means, where implementations diverge, and how to test it.
Iceberg REST Remote Scan Planning Changes More Than Query Performance
Remote scan planning moves Iceberg file selection into the catalog. What that changes for engines, governance, and operational cost beyond query speed.
Iceberg Row Lineage: The Feature AI and CDC Workloads Will Eventually Depend On
Iceberg row lineage gives rows a durable identity across rewrites. Why CDC pipelines and AI workloads will eventually depend on it.
Iceberg v4's Adaptive Metadata Tree, Explained From First Principles
Iceberg v4's adaptive metadata tree, explained from first principles: why commits rewrite too much today and how the tree makes change cheaper.
Why Iceberg v4 Is Really About Making the Cost of Change Proportional to the Change
Iceberg v4 is really about making the cost of a change proportional to the change. The principle, the current tax, and what the redesign pays down.
The Catalog Can Now Plan Your Iceberg Query: Inside REST Scan Planning
A mechanics walkthrough of Iceberg REST scan planning: client-side planning, remote endpoints, pagination, and where engine support stands in 2026.
Can Seven Different Iceberg REST Catalogs Really Run the Same DuckDB Code?
Can seven Iceberg REST catalogs run the same DuckDB script? What the protocol makes portable, what still differs, and a test matrix you can rerun.
Stop Flattening Your JSON: How Iceberg Variant Changes Semi-Structured Analytics
Iceberg Variant stores JSON as navigable binary with shredding for columnar filters. Why flattening wide tables is no longer the only performance path.
What Actually Happens When Two Engines Write the Same Iceberg Table at Once?
What happens when two engines write the same Iceberg table at once: snapshot isolation, optimistic commits, conflict detection, and when retries fail.