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Hardwood 1.0: A Fast, Lightweight Apache Parquet Reader for the JVM
by gunnarmorling·Jun 27, 2026·1 point·0 comments
AI Analysis
●●SolidSolve My ProblemNiche Gem
Zero Hadoop dependencies with parquet-java throughput and native-image support.
Strengths
- •Zero transitive dependencies beyond optional compression libraries like Snappy and ZSTD.
- •Multi-threaded page decoding with cross-file prefetching for multi-file reads.
- •1.0 release with documented divergences and production-ready stability claims.
Weaknesses
- •Reader-only today—writer support tracked on roadmap but not yet implemented.
- •Column chunks capped at 2GB limits very large single-column datasets.
Category
Target Audience
JVM developers working with Parquet files in data pipelines
Similar To
parquet-java · Apache Parquet · DuckDB
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