Re: Freeze avoidance of very large table.

Masahiko Sawada wrote:

> Attached updated version patch.
> Please review it.

In pg_upgrade, the "page convert" functionality is there to abstract
rewrites of pages being copied; your patch is circumventing it and
AFAICS it makes the interface more complicated for no good reason.  I
think the real way to do that is to write your rewriteVisibilityMap as a
pageConverter routine.  That should reduce some duplication there.

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Álvaro Herrera                http://www.2ndQuadrant.com/
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