Author: alex merced

2026-07-06 • Alex Merced

High-Performance Columnar Transfers: Combining Apache Arrow Flight and Iceberg REST Catalogs

Modern lakehouse architecture is easier to reason about when you separate two questions. The first question is how a sys...

2026-07-06 • Alex Merced

The Buyer's Scorecard for Agentic Analytics: Evaluating Tooling in the Enterprise AI Era

Agentic analytics demos are easy to enjoy and hard to evaluate. A user asks a question, an assistant answers, a chart ap...

2026-07-06 • Alex Merced

Building Closed-Loop Decision Agents: Moving from Passive BI Dashboards to Active Goal-Directed Workflows

Dashboards are excellent at showing people what happened. They are less good at deciding what should happen next....

2026-07-06 • Alex Merced

Conversational AI on Managed Iceberg: Exposing Amazon S3 Tables through MCP

The most interesting part of conversational analytics is not the chat box. The chat box is just the surface area. The ha...

2026-07-06 • Alex Merced

Decoupled Catalogs vs. Managed Tables: Architectural Freedom in the Age of Table Format Convergence

Open table formats have changed buyer expectations. A few years ago, the question was whether an organization should put...

2026-07-06 • Alex Merced

Preparing Your Data Lakehouse for the EU AI Act: Auditable Lineage and Data Provenance

The EU AI Act changes the conversation around AI architecture because it makes trust operational. It is not enough to sa...

2026-07-06 • Alex Merced

Enforcing Fine-Grained Security at Machine Speed: Dynamic Access Control for High-Frequency AI Agents

AI agents change the security model for analytics. A human user may run a handful of queries, pause, interpret the answe...

2026-07-06 • Alex Merced

Delete Files vs Deletion Vectors in Apache Iceberg: How V3 Rewrote the Economics of Changing Data

Iceberg v2 delete files vs v3 deletion vectors. How Roaring bitmaps and per-file vectors transformed merge-on-read perfo...

2026-07-06 • Alex Merced

The Variant Type in Apache Iceberg: How Shredding Turns Messy JSON Into Fast Analytics

Apache Iceberg v3 introduces the Variant type for flexible JSON storage with columnar performance. Learn how shredding e...

2026-07-06 • Alex Merced

The State of Apache Iceberg v4 in July 2026: What the Dev List Tells Us About the Format's Next Chapter

What the Iceberg v4 dev list tells us about adaptive metadata trees, single-file commits, column updates, and the format...

2026-07-06 • Alex Merced

Designing Idempotent Pipelines in the Agentic Lakehouse: Eliminating Double-Write Anomalies

Agents retry. Networks fail. Jobs time out after doing some work. APIs return ambiguous responses. Schedulers run the sa...

2026-07-06 • Alex Merced

The 2026-07-28 Model Context Protocol Release Candidate: What the Stateless Spec Means for Data Platforms

The date in this topic matters. Today is July 6, 2026. A release candidate dated July 28, 2026 is still in the future. T...

2026-07-06 • Alex Merced

The Metric Contract Mandate: Standardizing Semantic Layers Before AI Agent Access

AI agents are very good at moving quickly. That is the opportunity and the risk. If an agent can inspect metadata, gener...

2026-07-06 • Alex Merced

Multi-Engine Catalog Federation with Apache Polaris: Syncing Google Cloud, AWS, and Azure Metadata

Open table formats changed the data lakehouse conversation, but they did not finish it. A table can be stored in an open...

2026-07-06 • Alex Merced

Designing Private, Air-Gapped Data Lakehouses: Scaling Iceberg in Highly Secure, On-Premises Clouds

Some of the most important lakehouse work happens in environments that will never look like a simple public-cloud refere...

2026-07-06 • Alex Merced

Migrating Proprietary Warehouses to Open Lakehouses: The 2026 Playbook for Zero-Copy Metadata Translation

Every warehouse migration sounds simpler before the first inventory. Then the team discovers old dashboards, hidden depe...

2026-07-06 • Alex Merced

The State of Agentic AI Standards in 2026: MCP, A2A, WebMCP, OSI, and the Protocol Stack Taking Shape

The agentic AI protocol stack is solidifying in 2026 — MCP for tools, A2A for agents, WebMCP for the web, OSI for semant...

2026-07-06 • Alex Merced

The State of Apache Arrow in 2026: Ten Years In, the Invisible Standard Is Everywhere

Apache Arrow at 10 — ADBC, Flight SQL, nanoarrow, the AI reinterpretation, and how an in-memory standard eliminated the ...

2026-07-06 • Alex Merced

The State of Apache Parquet in 2026: The Quiet Format Enters Its Loudest Decade

Apache Parquet in 2026 — variant types, geospatial, ALP encoding, footer redesign, the versioning debate, and how the de...

2026-07-06 • Alex Merced

The State of Apache Polaris in July 2026: From Incubating Catalog to the Governance Layer of the Open Lakehouse

Apache Polaris as a TLP — federation, credential vending, semantic layers, lineage, and how the open catalog became the ...