hardwood on Gunnar Morling

VARIANT Support, Interactive Parquet File TUI: Hardwood 1.0.0.Beta2 Is Out

Wed, 29 Apr 2026 18:45:00 +0100

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I am happy to announce the release of Hardwood 1.0.0.Beta2!

The latest version of this new parser for Apache Parquet comes with support for VARIANT columns, an interactive text-based UI (TUI) for examining and analysing the structure of Parquet files, significantly improved performance, more efficient reading of files from object storage, and much more.

Hardwood Reaches Beta: S3, Predicate Push-Down, CLI, and More

Thu, 02 Apr 2026 19:20:00 +0100

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I am pleased to announce the release of Hardwood 1.0.0.Beta1!

Hardwood is a new parser for Apache Parquet, optimized for minimal dependencies and great performance. Since the project’s initial release just a few weeks back, a small yet very active community has come together and evolved Hardwood significantly. Today, we are shipping an S3 backend, allowing to parse files directly from object storage, predicate pushdown for both local and remote files, Avro bindings, a CLI for inspecting Parquet files, and much more. We’re also excited to launch a website for the project, hardwood.dev, which contains the documentation and API reference.

Let’s dig in.

Hardwood: A New Parser for Apache Parquet

Thu, 26 Feb 2026 14:30:00 +0200

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Today, it’s my great pleasure to announce the first public release of Hardwood, a new parser for the Apache Parquet file format, optimized for minimal dependencies and great performance.

Hardwood is open-source (Apache License 2.0) and supports Java 21 or newer. You can grab it from Maven Central and start parsing your Parquet files with ease and efficiency.