Hardwood
A lightweight, open-source Parquet parser for Java 21+ built for high throughput, multi-threaded reads with minimal depe
Our Take
Hardwood targets a specific pain point: native Parquet support in Java has always been either bloated with dependencies or painfully slow, and this parser promises both page-level parallelism and adaptive prefetching to fix that. The Java 21+ requirement is interesting because it signals this isn't for legacy stacks — it's built for people who want modern APIs and memory mapping without the weight of traditional libraries. Whether it actually delivers on the throughput claims depends on real-world benchmarks, but for anyone building data pipelines in modern Java, this is worth keeping an eye on as a potential dark horse.
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