KVGenerator.java 文件源码

private void fillKey(BytesWritable o) {
  int len = keyLenRNG.nextInt();
  if (len < MIN_KEY_LEN) len = MIN_KEY_LEN;
  o.setSize(len);
  int n = MIN_KEY_LEN;
  while (n < len) {
    byte[] word = dict[random.nextInt(dict.length)];
    int l = Math.min(word.length, len - n);
    System.arraycopy(word, 0, o.getBytes(), n, l);
    n += l;
  }
  if (sorted && WritableComparator.compareBytes(
          lastKey.getBytes(), MIN_KEY_LEN, lastKey.getLength() - MIN_KEY_LEN,
          o.getBytes(), MIN_KEY_LEN, o.getLength() - MIN_KEY_LEN) > 0) {
    incrementPrefix();
  }

  System.arraycopy(prefix, 0, o.getBytes(), 0, MIN_KEY_LEN);
  lastKey.set(o);
}