# Parquet File Write Support, Bloom Filters, Improved Performance: Hardwood 1.1.0.Beta1 Is Out

DevFeed: [Parquet File Write Support, Bloom Filters, Improved Performance: Hardwood 1.1.0.Beta1 Is Out](<https://devfeed.tech/articles/parquet-file-write-support-bloom-filters-improved-performance-hardwood-1-1-0-beta1-is-out-18856.md>)

Original publisher: [Read original article](<https://www.morling.dev/blog/parquet-file-write-support-bloom-filters-improved-performance-hardwood-1-1-0-beta1/>)

Published: 2026-08-31T19:36:00Z

Content type: release

Language: en

Sources: [Gunnar Morling](<https://devfeed.tech/sources/gunnar-morling.md>)

Topics: [parquet](<https://devfeed.tech/topics/parquet.md>), [Library](<https://devfeed.tech/topics/library.md>), [Parser](<https://devfeed.tech/topics/parser.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>), [Compression](<https://devfeed.tech/topics/compression.md>)

Tags: [apache-parquet](<https://devfeed.tech/tags/apache-parquet.md>), [api](<https://devfeed.tech/tags/api.md>), [cli](<https://devfeed.tech/tags/cli.md>), [compression](<https://devfeed.tech/tags/compression.md>), [library](<https://devfeed.tech/tags/library.md>), [parquet](<https://devfeed.tech/tags/parquet.md>), [performance](<https://devfeed.tech/tags/performance.md>), [release](<https://devfeed.tech/tags/release.md>)

## AI overview

The first beta of Hardwood 1.1 introduces initial Parquet file-writing support through record-based and batch-oriented APIs. The release also adds Bloom filters, dictionary-based row-group pruning, performance improvements, and CLI enhancements.

## Source excerpt

Table of Contents Write Support Query Evaluation: Bloom Filters and Dictionary-Based Row-Group Pruning Performance Improvements Hardwood CLI Closing Thoughts "When is write support gonna land in Hardwood?" That's probably the most common question I got over the last few months. As of today, I am very happy to share that the answer has changed from "It's coming soon" to "A first cut is there, give it a try" -- the first Beta of Hardwood 1.1 is out! This is a major milestone for the project, marking the first step in evolving Hardwood from being solely a Parquet parser to a complete library for this widely used columnar file format. But there's more. This release also comes with significant enhancements to the query layer (Bloom filters, dictionary-based row-group pruning), many performance improvements such as a fast path for effectively fixed-length list columns, an even snappier CLI, and much more. Let's dig into some of the new features and changes!