Bruce Momjian wrote:

> I don't think it makes sense to try and save bits and add complexity
> when we have no idea if we will ever use them,

If we find ourselves in dire need of additional bits, there is a known
mechanism to get back 2 bits from old-style VACUUM FULL.  I assume that
the reason nobody has bothered to write the code for that is that
there's no *that* much interest.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services


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