Alex Merced • 4/13/2026

What is Apache Iceberg? The Table Format Revolution

This article details Apache Iceberg, a table format that revolutionizes data lake analytics by replacing the traditional Hive-style directory listing with a file-level metadata tree. It covers the directory listing bottleneck, Iceberg's metadata architecture (catalog, metadata.json, manifest list, manifest files), and key features like schema and partition evolution, time travel, and atomic snapshots. The article is part of a series on open source lakehouse technologies, emphasizing how Iceberg brings transactional database reliability to cloud object storage for efficient SQL querying.

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#cloud storage #Apache Iceberg #Data Lakehouse