这个清理为什么遇到比pruningTimestamp大的时间就停止清理了呢

SharedBuffer.java

	public void prune(long pruningTimestamp, List<SharedBufferEntry<K, V>> prunedEntries) {
			Iterator<Map.Entry<ValueTimeWrapper<V>, SharedBufferEntry<K, V>>> iterator = entries.entrySet().iterator();
			boolean continuePruning = true;

			while (iterator.hasNext() && continuePruning) {
				SharedBufferEntry<K, V> entry = iterator.next().getValue();

				if (entry.getValueTime().getTimestamp() <= pruningTimestamp) {
					prunedEntries.add(entry);
					iterator.remove();
				} else {
					continuePruning = false;
				}
			}
		}