# aircompressor

**Repository Path**: lclz123/aircompressor

## Basic Information

- **Project Name**: aircompressor
- **Description**: A port of Snappy, LZO, LZ4, and Zstandard  to Java
- **Primary Language**: Java
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2019-08-24
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Compression in pure Java
[![Maven Central](https://img.shields.io/maven-central/v/io.airlift/aircompressor.svg?label=Maven%20Central)](https://search.maven.org/#search%7Cga%7C1%7Cg%3A%22io.airlift%22%20AND%20a%3A%22aircompressor%22)
[![Build Status](https://travis-ci.org/airlift/aircompressor.svg?branch=master)](https://travis-ci.org/airlift/aircompressor)

This library contains implementations of [LZ4](https://github.com/Cyan4973/lz4),
[Snappy](http://code.google.com/p/snappy/), and
[LZO](http://www.oberhumer.com/opensource/lzo/) written in pure Java. They are 
typically 10-40% faster than the JNI wrapper for the native libraries.

# Hadoop CompressionCodec

In addition to the raw block encoders, there are implementations of the
Hadoop CompressionCodec for each algorithm. They are
typically 300% faster than the JNI wrappers.

# Requirements

This library requires a Java 1.8+ virtual machine containing the `sun.misc.Unsafe` interface running on a little endian platform.

# Users

This library is used in projects such as Presto (https://prestosql.io), a distributed SQL engine.