> > In my understanding to prevent redo-ing two or more times while in the
> > recovery process, we need to compare LSN in the object against the LSN
> > in the WAL log.
>
> But undo/redo checking on file creation or deletion is trivial: either
> the kernel has the file or it doesn't. We do not need any other check
> AFAICS.
Are you saying that the table creation log record would contain a
relfilenode? I'm not sure the relfilenode is same before and after the
recovery if we consider the point time recovery.
--
Tatsuo Ishii
