Apache Parquet

1. September 21, 202631 min read

   CVE-2026-73334 and the Trust Boundary Inside an Encrypted Parquet File

   CVE-2026-73334 lets a tampered Parquet footer route a reader's KMS token to an attacker. Here's the fix, Iceberg's safe path, and how to audit your lakehouse.

2. September 21, 202630 min read

   Parquet Page Indexes and the Last Mile of Pruning in Apache Iceberg

   Parquet page indexes can cut selective Iceberg scans by an order of magnitude on sorted data. How they work, what they cost, and how to lay out tables.

3. August 25, 202631 min read

   FSST and ALP: The Two Encodings Fixing Parquet's Weakest Compression Cases

   ALP and FSST target Parquet's worst cases: floats and high-cardinality strings. How they work and what they change for Iceberg tables.

4. July 25, 202630 min read

   Iceberg's Next Version Depends on Decisions Being Made in Parquet

   The Iceberg and Parquet specifications are co-evolving. Several of the most consequential Iceberg v4 proposals are waiting on Parquet work.

5. July 24, 202631 min read

   The Breakdown of the Open Lakehouse in 2026: Iceberg, Arrow, Polaris, Parquet, and Ossie, and How to Actually Build One

   A detailed breakdown of the five Apache projects powering the open lakehouse in 2026, Parquet, Iceberg, Polaris, Arrow, and Ossie, and how to build one.

6. July 6, 202628 min read

   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 decade-old format is renovating.

7. December 29, 20257 min read

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

   A look back at key developments in Apache Iceberg, Polaris, Parquet, and Arrow in 2025.

8. October 21, 20244 min read

   All About Parquet Part 01 - An Introduction

   All about the Apache Parquet File Format

9. October 21, 20245 min read

   All About Parquet Part 02 - Parquet's Columnar Storage Model

   All about the Apache Parquet File Format

10. October 21, 20246 min read

    All About Parquet Part 03 - Parquet File Structure | Pages, Row Groups, and Columns

    All about the Apache Parquet File Format

11. October 21, 20246 min read

    All About Parquet Part 04 - Schema Evolution in Parquet

    All about the Apache Parquet File Format

12. October 21, 20246 min read

    All About Parquet Part 05 - Compression Techniques in Parquet

    All about the Apache Parquet File Format

13. October 21, 20247 min read

    All About Parquet Part 06 - Encoding in Parquet | Optimizing for Storage

    All about the Apache Parquet File Format

14. October 21, 20247 min read

    All About Parquet Part 07 - Metadata in Parquet | Improving Data Efficiency

    All about the Apache Parquet File Format

15. October 21, 20246 min read

    All About Parquet Part 08 - Reading and Writing Parquet Files in Python

    All about the Apache Parquet File Format

16. October 21, 20247 min read

    All About Parquet Part 09 - Parquet in Data Lake Architectures

    All about the Apache Parquet File Format

17. October 21, 20247 min read

    All About Parquet Part 10 - Performance Tuning and Best Practices with Parquet

    All about the Apache Parquet File Format

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