TLDR Tech / Data
Hardwood 1.0: A Fast, Lightweight Apache Parquet Reader for the JVM
Hardwood 1.0 is a production-ready, JVM-native Parquet reader for Java 21+ that removes mandatory dependencies and parallelizes page decoding across CPU cores by default. It covers Parquet physical/logical types, projections, predicate push-down, local and object-store files, with row and batch column APIs. Benchmarks show 16.5M rows/sec and ~17-18x selective push-down speedups.
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