public boolean unsafeEqualKey(long keyRefWord, byte[] keyBytes, int keyStart, int keyLength) {
    return equalKey(keyRefWord, keyBytes, keyStart, keyLength, unsafeReadPos);
  }
THIS METHOD IS NOT THREAD-SAFE. Use only at load time (or be mindful of thread safety).
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/fast/VectorMapJoinFastKeyStore.java