A word-aligned compressed variant of the Java bitset class
JavaEWAH is a word-aligned compressed variant of the Java bitset class. It uses a 64-bit run-length encoding (RLE) compression scheme. The goal of word-aligned compression is not to achieve the best compression, but rather to improve query processing time. Hence, we try to save CPU cycles, maybe at the expense of storage. However, the EWAH scheme we implemented is always more efficient storage-wise than an uncompressed bitmap (implemented in Java as the BitSet class). Unlike some alternatives, javaewah does not rely on a patented scheme.
Release | Stable | Testing |
---|---|---|
Fedora Rawhide | 1.1.13-10.fc41 | - |
Fedora 40 | 1.1.13-10.fc40 | 1.1.13-10.fc40 |
Fedora 39 | 1.1.13-7.fc39 | - |
Fedora 38 | 1.1.13-6.fc38 | - |
You can contact the maintainers of this package via email at
javaewah dash maintainers at fedoraproject dot org
.