Hardwood 1.0: A Fast, Lightweight Apache Parquet Reader for the JVM

135 · · June 25, 2026, 5:13 p.m.
Summary
Hardwood 1.0 is a new, lightweight, and performance-focused Apache Parquet reader for the JVM, designed to efficiently read Parquet files without mandatory dependencies. The library is open-source, targets Java 21 or newer, and has reached its stable 1.0 release after five preview iterations. It emphasizes multi-threading and performance improvements.