in src/main/java/com/hadoop/compression/lzo/LzopDecompressor.java [119:126]
public synchronized void setInput(byte[] b, int off, int len) {
if (!isCurrentBlockUncompressed()) {
// If the current block is uncompressed, there was no compressed
// checksum and no compressed data, so nothing to update.
for (Checksum chk : chkCMap.values()) chk.update(b, off, len);
}
super.setInput(b, off, len);
}