polars-parquet-format 0.1.0

Safe Parquet and Thrift reader and writer (sync and async)
Documentation

parquet-format-safe

This crate contains an implementation of Thrift and generated Rust code associated to Parquet's thrift definition.

  • supports sync and async read API
  • supports sync and async write API
  • the write API returns the number of written bytes
  • the read API is panic free
  • the read API has a bound on the maximum number of possible bytes read, to avoid OOM.

The Rust generated code is done by a fork of thrift's compiler, available at https://github.com/coastalwhite/thrift/tree/safe.

Usage

To regenerate the thrift format implementation in Rust.

nix-shell
generate_parquet_format
mv parquet.rs src/parquet_format.rs