Data Engineering Blogroll
Recent articles and tutorials pulled from the DataLakehouseHub.com feed. Filter them below, or read the definitions behind them in the knowledge base.
What Apache Polaris 1.9.0 Brings to Low-Egress Multi-Cloud Catalogs
Picture a lakehouse that stores Iceberg tables in three places. Raw event data sits in Amazon S3 because that is where the producers live. A finance team keeps...
Read ArticleSchema Pruning and Few-Shot SQL Selection for Data Agents Facing Thousands of Columns
A data agent works fine in the demo. The demo database has six tables and forty columns, and the agent writes correct SQL for nearly every question. Then the te...
Read ArticleUpgrading to Apache Iceberg 1.12.0 Without Breaking Your Engines
Your Spark jobs pin one Iceberg version. Your Flink streaming sink pins another. PyIceberg runs inside a few notebooks and a Lambda function, and your REST cata...
Read ArticleHow to Build a Golden-Question Benchmark for Your Data Agents
A data agent passes its demo. It answers revenue by region, top customers by margin, and churn by cohort, and the numbers match the dashboard. Two weeks later s...
Read ArticleWhen a Data Agent Gives a Wrong Number: Incident Response for Agentic Analytics
A regional director pastes a number from the company's AI analyst into a board deck. Net revenue for the quarter, broken down by region. Three days later, the f...
Read ArticleMulti-Tenant Data Agents: Serving Many Customers From One Lakehouse
A software company adds an AI analyst to its product. Every customer gets a chat box that answers questions about their own usage, billing, and performance data...
Read ArticleRelease Management for Data Agents: Shipping Prompts, Tools, Models, and Metrics Without Breaking Answers
A data agent that worked on Friday gives a different answer on Monday. Nobody deployed anything. The model provider updated the model behind the same name over...
Read ArticleSemantic Caching for Data Agents Without Serving Stale or Leaked Numbers
A data agent gets the same question forty times before lunch. The finance team asks for net revenue by region this quarter. A regional manager asks for EMEA rev...
Read ArticleSmall Language Models for Data Agents: Where They Win and Where They Fail
Look at the bill for a data agent that has been running for a month. Most of the tokens did not go to hard reasoning. They went to routine work: deciding whethe...
Read ArticleStop Calling Everything Made With AI Slop
Scroll any comment section under a blog post, a video, or a song in 2026 and you will find the same two-word review. "AI slop." Sometimes the label fits. The po...
Read ArticleTurning an Analytics Question Into a Verified Agentic Graph
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/ags-multi-agent-analytics-workflow/). A...
Read ArticleKeeping Audit Snapshots Alive While Iceberg Snapshot Expiration Runs Every Night
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/iceberg-tags-regulatory-snapshot-retentio...
Read ArticleTwelve Queries That Pass Every Schema Check and Still Return the Wrong Number
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/semantic-failure-catalog-ai-agent-queries...
Read ArticleWhy the Iceberg DataFusion Integration Is Moving to Apache DataFusion
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/datafusion-iceberg-moves-to-apache-datafu...
Read ArticleWhat Iceberg v4's Proposed FILE Type Means for Multimodal Tables
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/iceberg-v4-file-type-multimodal-tables/)....
Read ArticleFast Classification Models, LLMs, and the Apache Iceberg Lakehouse
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/jev-classification-models-iceberg-lakehou...
Read ArticleHow Apache Ossie Is Deciding What Agents and BI Tools Can Ask a Semantic Layer
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/ossie-semantic-query-interface-agents/)....
Read ArticleCVE-2026-73334 and the Trust Boundary Inside an Encrypted Parquet File
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/parquet-kms-url-cve-2026-73334-iceberg/)....
Read ArticleParquet Page Indexes and the Last Mile of Pruning in Apache Iceberg
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/parquet-page-index-pruning-iceberg/). A...
Read ArticleHow Apache Polaris Plans to Share Iceberg Tables Across Organizations
> **Cross-posted.** This article's canonical home is [Alex Merced's Lakehouse Blog](https://iceberglakehouse.com/posts/polaris-open-sharing-iceberg-tables/). A...
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