> > Checkpoint' undo is not used currently so just comment out
> > GetUndoRecPtr call in CreateCheckPoint - we'll find solution later.
>
> I thought about that, but figured you'd object ;-)
>
> One possibility is to do something you had recommended awhile back for
> other reasons: add a spinlock to each PROC structure and use the
> spinlock, rather than SInvalLock, to protect setting and reading of
> xmin, logRec, and related fields. I haven't finished working out all
> the details, though, and this seems like a rather large change to make
> at this late stage of beta. Comments?
Sure - *comment* out GetUndoRecPtr -:)
Vadim