Apache Parquet

1. September 21, 202631 min read

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

   Picture a Spark job that reads encrypted Parquet files from a landing bucket. A partner drops the files there every night. The job decrypts them,…

2. September 21, 202630 min read

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

   A query asks for one customer's orders from a 2 TB Apache Iceberg table. Planning goes well. Partition pruning and manifest statistics cut the scan…

3. August 25, 202631 min read

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

   Look at the byte breakdown of a large Parquet table in a lakehouse and two column types dominate out of proportion to their row count. The first is…

4. July 25, 202630 min read

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

   Follow an Apache Iceberg design discussion about column-level updates long enough and it stops being an Iceberg discussion. The question of whether a…

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

   If you have followed the data world for the past few years, you have heard the phrase "open lakehouse" often enough that it may have started to sound…

6. July 6, 202628 min read

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

   Apache Parquet is thirteen years old, holds more of the world's analytical data than any format ever created, and for most of its life has been the…

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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