A little typo in Percolator section

[Fullstop000]

如果primary lock 已被write所替代，也就是说该事务已被提交，事务需要roll forword,也就是对所有涉及到的、未完成提交的数据，用write记录替代标准的锁standard lock。

I think it should be stranded lock (remaining lock) but not standard lock referring to the last second paragraph in Chapter 2.2 of https://www.usenix.org/legacy/event/osdi10/tech/full_papers/Peng.pdf

To roll forward, the transaction performing the cleanup replaces the stranded lock with a write record as the original transaction would have done.