Date: Tue, 21 Mar 2017 16:43:58 -0300
From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Bruce Momjian <bruce@momjian.us>
Cc: Pavan Deolasee <pavan.deolasee@gmail.com>,
	Robert Haas <robertmhaas@gmail.com>,
	Amit Kapila <amit.kapila16@gmail.com>,
	Jaime Casanova <jaime.casanova@2ndquadrant.com>,
	Haribabu Kommi <kommi.haribabu@gmail.com>,
	Tomas Vondra <tomas.vondra@2ndquadrant.com>,
	pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: Patch: Write Amplification Reduction Method (WARM)
Message-ID: <20170321194358.e6ikl3wfw3k2lu6f@alvherre.pgsql>
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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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