TLDR Data · MISCELLANEOUS

ALP: ADAPTIVE LOSSLESS FLOATING-POINT ENCODING IN APACHE PARQUET

parquet.apache.org7 min read

Summary from the TLDR Data newsletter

Apache Parquet added ALP, a new lossless encoding for floating-point data that delivers compression similar to ZSTD while decoding around 10x faster. It also enables much faster random access and parallel decoding, making it especially useful for prices, coordinates, and scientific measurements.