Securing Apache Iceberg Tables with Fine-Grained Row and Column Level Access Control
Apache Iceberg handles table format, schema evolution, and metadata management. What it doesn't handle is access control. The spec defines…
The archive
Writing, page 22
593 posts on Apache Iceberg, lakehouse architecture, data engineering and applied AI.
Designing an Immutable Data Lakehouse: Best Practices for Iceberg Snapshot Expiration
Iceberg tables accumulate snapshots by design. Every write : every INSERT, UPDATE, DELETE, or compaction, creates a new snapshot. That's…
Decoupling Storage and Compute in Apache Iceberg: A Deep Dive into Cost Optimization
Most proprietary data warehouses bundle their storage and compute into a single product. You buy the system, and you get both : at a price…
Legacy Warehouses to Open Lakehouses: A Step-by-Step Migration Playbook
Most teams that start a warehouse-to-lakehouse migration underestimate one thing: the actual problem is trust, not technology. Your…
Building the Brain of the Agentic Lakehouse: Designing an Open Catalog Architecture
An AI agent connected to a data platform needs to know three things before it can answer questions reliably: what data exists, what it…
Evaluating the TCO of an Open Lakehouse vs. Proprietary Data Warehouses
Before you sign a multiyear warehouse contract or commit to building an open lakehouse, you need the actual numbers. Not marketing claims :…
Real-Time BI: Enabling Sub-Second Queries on Apache Iceberg Data Lakehouses
The standard knock on cloud object storage for analytics is latency. S3 GET requests average 20–50 milliseconds each. A dashboard query…
The Rise of Agentic Analytics: Shifting BI from Passive Dashboards to Goal-Directed Action
Dashboards have a fundamental design problem: they answer the question the designer anticipated, not the question the business needs…
The Semantic Layer as a Translation Engine: Bridging Natural Language and SQL
"What was our revenue last quarter?" is a five-word question. The SQL that correctly answers it might be 40 lines long : joining three…
Comparing the Top 2026 Agentic Analytics Tools: ThoughtSpot, Databricks, and Tableau
The agentic analytics vendor landscape shifted significantly in 2025–2026. Every major BI and data platform added some form of natural…