@Override
            public Iterator<V> iterator() {
                return new Iterator<V>() {
                    final PrimitiveIterator iter = new PrimitiveIterator();

                    @Override
                    public boolean hasNext() {
                        return iter.hasNext();
                    }

                    @Override
                    public V next() {
                        return iter.next().value();
                    }

                    @Override
                    public void remove() {
                        throw new UnsupportedOperationException();
                    }
                };
            }
The load factor for the map. Used to calculate {@link #maxSize}.
jraft-rheakv/rheakv-core/src/main/java/com/alipay/sofa/jraft/rhea/util/ByteObjectHashMap.java