但仍然存在一个问题，它会破坏要分析的艺术品。

But again, there is a problem. This technique destroys what it analyzes.

youdao

但是“两阶段提交协议简介”小节中提到仍然存在一个问题，那就是如果第2阶段中一个事务分支发生故障，该怎么办呢？

But there is still an open question mentioned in the section "Introduction into the Two-Phase-Commit protocol". What to do, if "Phase 2" failed for a transaction branch?

youdao

但是“两阶段提交协议简介”小节中提到仍然存在一个问题，那就是如果第2阶段中一个事务分支发生故障，该怎么办呢？

But there is still an open question mentioned in the section "Introduction into the Two-Phase - Commit protocol". What to do, if "Phase 2" failed for a transaction branch?

youdao

That in many cases, I can gain efficiency if I'm willing to give up space. Having said that though, there may still be a problem, or there ought to be a problem that may be bugging you slightly, which is how do I guarantee that my hash function takes any input into exactly one spot in the storage space?

普遍存在的增益和权衡,在许多的例子中,可以通过牺牲空间而得到效率方面的增加,话说回来，仍然存在一个问题,或者应该会有一个问题困扰着你,就是我如何保证我的哈希函数能够准确将,任一输入映射到相应的唯一的存贮空间中去？

麻省理工公开课 - 计算机科学及编程导论课程节选