INN 2.4.0 and overview problems

[Katsuhiro Kondou]

In article <87fzf214bl.fsf at windlord.stanford.edu>,
	Russ Allbery <rra at stanford.edu> wrote;

} how to solve it.  It would be good at some point to write some more audit
} and repair tools (maybe based on the existing OV_DEBUG code?) for
} buffindexed like we now have for tradindexed.

Due to characteristic of buffindexed, it'd be quite
difficult to recover overview for specific newsgroups.
Rather than that, I'd choose having journal(logging)
data to restore overview data, and appending lost
overview data based on the receipt time in history.
-- 
Katsuhiro Kondou