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316 Stars 69 Forks Apache License 2.0 267 Commits 20 Opened issues


A port of Snappy, LZO, LZ4, and Zstandard to Java

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Compression in pure Java

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This library contains implementations of LZ4, Zstandard (Zstd), Snappy, and 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.


This library requires a Java 1.8+ virtual machine containing the

interface running on a little endian platform.


This library is used in projects such as Trino (, a distributed SQL engine.

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