ChannelBuffer buf = ChannelBuffers.wrappedBuffer(fuzzyKey);
buf.clear();
buf.writeShort((short) 2);
for (int i = 0; i < 4; i++)
buf.writeByte((short)63);
buf.writeInt((short)1);
byte[] mask = new byte[] {0 , 0, 1, 1, 1, 1, 0, 0, 0, 0};
Pair<byte[], byte[]> pair = new Pair<byte[], byte[]>(fuzzyKey, mask);
FuzzyRowFilter fuzzyRowFilter = new FuzzyRowFilter(Lists.newArrayList(pair));