| Log Message: |
COMPRESS-296 Parallel compression. Added StreamCompressor and ScatterZipOutputStream.
StreamCompressor is an extract of the deflation algorithm from ZipArchiveOutputStream, which unfortunately
was too conflated with writing a file in a particular structure. Using the actual zip file format as an
intermediate format for scatter-streams turned out to be fairly inefficient. ScatterZipOuputStream
is 2-3x faster than using a zip file as intermediate format.
It would be possibly to refactor ZipArchiveOutputStream to use StreamCompressor, but there would
be a slight break in backward compatibility regarding the protected writeOut method, which
is moved to the streamCompressor class.
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commons/proper/compress/trunk/src/main/java/org/apache/commons/compress/archivers/zip/ScatterZipOutputStream.java