Alex Merced • 12/29/2025

2025 Year in Review Apache Iceberg, Polaris, Parquet, and Arrow

This article provides a comprehensive 2025 review of four critical Apache open-source data projects: Iceberg, Polaris, Parquet, and Arrow. It details the major features shipped in each project throughout the year, such as Iceberg's Format V3 enhancements and deletion vectors, and outlines their upcoming developments. The focus is on how these technologies mature the open lakehouse architecture, enabling data warehouse performance on object storage.

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#Apache Arrow #Apache Iceberg #Data Lakehouse