![]() ![]() Deflate is relevant only for the Avro file format. DEFLATE Compression algorithm based on LZSS and Huffman coding. Athena supports the following compression formats: BZIP2 Format that uses the Burrows-Wheeler algorithm. Run the following command to decompress Snappy-compressed files. The same principle applies for ORC, text file, and JSON storage formats. Simple Log Service provides a Linux-based Snappy tool that allows you to decompress Snappy-compressed files in a Linux operating system.ĭownload the Linux-based Snappy tool from snappy_tool. ![]() python -m snappy -d compressed_file.snappy uncompressed_file To compress Avro data, use the bq command-line tool or the API and specify one of the supported compression types for Avro data: DEFLATE or SNAPPY. If you want to decompress data by using a CLI, you must use the Hadoop mode (hadoop_stream_decompress) or the streaming mode (stream_decompress). The Avro format cant be used in combination with GZIP compression. The following command cannot be used to decompress Snappy-compressed OSS files. We recommend that you use a UNIX-like system or specify a valid encoding format in the encoding parameter of the open function. For example, the error UnicodeDecodeError: 'gbk' codec can't decode byte 0xff in position 0: illegal multibyte sequence may occur because the files in the Windows file system start with byte order mark (BOM). If you use the snappy.uncompress method to decompress files in a Windows system, an error may occur. Use the snappy.uncompress method to decompress Snappy-compressed files. (new String(buffer, 0, len)) ĭownload and install the Snappy library for Python from python-snappy. SnappyInputStream sis = new SnappyInputStream(new FileInputStream(fileName)) String result = new String(uncompressed, "UTF-8") ![]() Int fileLength = (int) randomFile.length() īyte uncompressed = Snappy.uncompress(bytes) RandomAccessFile randomFile = new RandomAccessFile(fileName, "r") SnappyFramedInputStream is not supported. ![]()
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