easyops-cn / arrow-datafusion

Apache Arrow DataFusion SQL Query Engine

DataFusion

DataFusion is a very fast, extensible query engine for building high-quality data-centric systems in Rust, using the Apache Arrow in-memory format. Python Bindings are also available. DataFusion offers SQL and Dataframe APIs, excellent performance, built-in support for CSV, Parquet, JSON, and Avro, extensive customization, and a great community.

Here are links to some important information

• Project Site
• Installation
• Rust Getting Started
• Rust DataFrame API
• Rust API docs
• Rust Examples
• Python DataFrame API
• Architecture

What can you do with this crate?

DataFusion is great for building projects such as domain specific query engines, new database platforms and data pipelines, query languages and more. It lets you start quickly from a fully working engine, and then customize those features specific to your use. Click Here to see a list known users.

Contributing to DataFusion

Please see the developer’s guide for contributing and communication for getting in touch with us.

Crate features

This crate has several features which can be specified in your Cargo.toml.

Default features:

• compression: reading files compressed with xz2, bzip2, flate2, and zstd
• crypto_expressions: cryptographic functions such as md5 and sha256
• encoding_expressions: encode and decode functions
• parquet: support for reading the Apache Parquet format
• regex_expressions: regular expression functions, such as regexp_match
• unicode_expressions: Include unicode aware functions such as character_length

Optional features:

• avro: support for reading the Apache Avro format
• backtrace: include backtrace information in error messages
• pyarrow: conversions between PyArrow and DataFusion types
• serde: enable arrow-schema's serde feature
• simd: enable arrow-rs's manual SIMD kernels (requires Rust nightly)

Rust Version Compatibility

This crate is tested with the latest stable version of Rust. We do not currently test against other, older versions of the Rust compiler.