[PARQUET-2132] Support Quantile Compression q_compress column codec

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: parquet-cpp, parquet-format, parquet-mr
• Assignee: Unassigned
• Reporter: Martin Loncaric
• Created: 28/Feb/22 21:19
• Updated: 28/Feb/22 21:21

Description

Quantile Compression (https://github.com/mwlon/quantile-compression) is a recent but stable compression algorithm for numerical sequences that averages 35%+ higher compression ratio than the next best codec (zstd), given the same compression time. It has fairly fast decompression speed, close to that of zstd. Compared to Parquet's built-in PFor-like integer compression algorithm, it achieves a much higher compression ratio at slower speed. Adding q_compress as a column codec for all numerical columns could substantially reduce the size of most Parquet files.

q_compress is implemented in Rust, which has good interop with C++ and can run in JVM via JNI (e.g. https://github.com/pancake-db/pancake-scala-client).