This library contains implementations of LZ4, Snappy, and LZO written in pure Java. They are typically 10-40% faster than the JNI wrapper for the native libraries.
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 sun.misc.Unsafe interface running on a little endian platform.
This library is used in projects such as Presto (https://prestosql.io), a distributed SQL engine.