Updates after the initialupdate are incremental, unchanged objects that have already been indexed will not be indexed again.
初始更新之后是增量更新,那些已经被索引且没有被修改的对象不会被再次索引。
2
If several developers have introduced bugs, one set of problems may mask the other, causing a series of delays between the initialupdate of the code and the eventual discovery of problems introduced.