hyparquet decompressors

This package exports a compressors object intended to be passed into hyparquet.

Apache Parquet is a popular columnar storage format that is widely used in data engineering, data science, and machine learning applications for efficiently storing and processing large datasets. It supports a number of different compression formats, but most parquet files use snappy compression.

The hyparquet library by default only supports uncompressed and snappy compressed files. The hyparquet-compressors package extends support for all legal parquet compression formats.

The hyparquet-compressors package works in both node.js and the browser. Uses js and wasm packages, no system dependencies.

Usage

import { parquetRead } from 'hyparquet'
import { compressors } from 'hyparquet-compressors'

await parquetRead({ file, compressors, onComplete: console.log })

See hyparquet repo for further info.

Supported compression formats

Parquet compression types supported with hyparquet-compressors:

• Uncompressed
• Snappy
• GZip
• LZO
• Brotli
• LZ4
• ZSTD
• LZ4_RAW

References

• https://parquet.apache.org/docs/file-format/data-pages/compression/
• https://en.wikipedia.org/wiki/Brotli
• https://en.wikipedia.org/wiki/Gzip
• https://en.wikipedia.org/wiki/LZ4_(compression_algorithm)
• https://en.wikipedia.org/wiki/Snappy_(compression)
• https://en.wikipedia.org/wiki/Zstd
• https://github.com/101arrowz/fflate
• https://github.com/101arrowz/fzstd
• https://github.com/foliojs/brotli.js
• https://github.com/hyparam/hysnappy