Hardwood Parquet parser
Ranked 2 of 7 parser libraries by recommenders
Free Java library for reading Apache Parquet files, recommended for minimal dependencies and multi-threaded execution, with a row reader included.
Free Java library for reading Apache Parquet files, recommended for minimal dependencies and multi-threaded execution, with a row reader included.
7 people gave an opinion
- recommend it
- 7
- criticize it
- 0
- approval share
- 100%
Recommended in 2 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: recommended
- March 2026: recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 7 people recommend itNeeds 10 or more, not met.
- Nobody criticizes itNeeds 2 to 1 or better, met.
- Recommended in 2 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Minimal, no mandatory dependencies
“with minimal dependencies and multi-threaded execution”
Comment from 10 Feb 2026 in “Ask HN: What Are You Working On? (February 2026)” “Hardwood doesn't have any mandatory dependencies”
Comment from 1 Mar 2026 in “Hardwood: A New Parser for Apache Parquet”
Other parser libraries people recommend
The four most recommended other parser libraries, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Tree-sitter | 79 | 15 | 84% | 12 | — | Approved |
| Hardwood Parquet parserThis page | 7 | 0 | 100% | 2 | — | — |
| Lark parser library for Python | 6 | 1 | 86% | 5 | — | — |
| Kaitai Struct | 6 | 2 | 75% | 5 | — | — |
| Ohm parsing library | 6 | 3 | 67% | 2 | — | — |
What people said
5 of the 9 comments that mention it, newest first. Each links to the original comment.
“Cool! I definitely felt the pain of current options”
“Hardwood doesn't have any mandatory dependencies”
“I think it's faring really well for those”
“Cool to see row reader is supported out of the box”
“with minimal dependencies and multi-threaded execution”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.