![]() ![]() Simply put the snappy-java's jar to WEB-INF/lib folder of your web application. Miscellaneous Notes Using snappy-java with Tomcat 6 (or higher) Web Server GitHub action will publish a new relase to Maven Central (Sonatype) when a new tag vX.Y.Z is pushed. To use BitShuffle routines, import :Ī file target/snappy-java-$(version).jar is the product additionally containing the native library built for your platform. compress.Snapp圜odecīitShuffle is an algorithm that reorders data bits (shuffle) for efficient compression (e.g., a sequence of integers, float values, etc.). SnappyHadoopCompatibleOutputStream does not emit a file header but write out the current block size as a preemble to each blockĭata format compatibility matrix: Write\Read.You can read the result of press with SnappyInputStream, but you cannot read the compressed data generated by SnappyOutputStream with Snappy.uncompress. SnappyOutputStream and SnappyInputStream use ()* format.Note that not all libraries support all variants. SnappyOutputStream and SnappyInputStream methods.įor interoperability with other libraries, check that compatible formats are used. It later addedĪ "framing" format to define a file format, but by this point major software wasĪlready using an industry standard instead - represented in this library by the The original Snappy format definition did not define a file format. SnappyFramedOutputStream/ SnappyFramedInputStream can be used for the framing format. Stream-based compressor/decompressor SnappyOutputStream/ SnappyInputStream are also available for reading/writing large data sets. ), Snappy.rawUncompress(.), etc.), which minimize memory copies, can be used. In addition, high-level methods ( press(String), press(float. String result = new String( uncompressed, "UTF-8") getBytes( "UTF-8")) īyte uncompressed = Snappy. + "Snappy, a fast compresser/decompresser." īyte compressed = Snappy. String input = "Hello snappy-java! Snappy-java is a JNI-based wrapper of " Add the following dependency to your pom.xml: Snappy-java is available from Maven's central repository. Snapshot version (the latest beta version):.The current stable version is available from here: The decompression speed is twice as fast as the others: The benchmark result indicates snappy-java is the fastest compressor/decompressor in Java: Thanks Tatu Saloranta for providing the benchmark suite. Here are some benchmark results, comparing ![]() So the compression ratio of snappy-java is modest and about the same as LZF (ranging 20%-100% according to the dataset). Snappy's main target is very high-speed compression/decompression with reasonable compression size. Free for both commercial and non-commercial use. Framing-format support (Since 1.1.0 version).Then call compression/decompression methods in. Add the snappy-java-(version).jar file to your classpath. snappy-java loads one of these libraries according to your machine environment (It looks system properties, os.name and os.arch). Portable across various operating systems Snappy-java contains native libraries built for Window/Mac/Linux, etc.To improve the compression ratios of these arrays, you can use a fast data-rearrangement implementation ( BitShuffle) before compression.Compression/decompression of Java primitive arrays ( float, double, int, short, long, etc.).Although snappy-java uses JNI, it can be used safely with multiple class loaders (e.g.JNI-based implementation to achieve comparable performance to the native C++ version.SnappyOutputStream uses only 32KB+ in default. Fast compression/decompression around 200~400MB/sec.Snappy-java is a Java port of the snappy, a fast C++ compresser/decompresser developed by Google. ![]()
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