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From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Pavan Deolasee <pavan.deolasee@gmail.com>
Cc: Jaime Casanova <jaime.casanova@2ndquadrant.com>
Cc: Haribabu Kommi <kommi.haribabu@gmail.com>
Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: Patch: Write Amplification Reduction Method (WARM)
Date: Thu, 26 Jan 2017 16:53:08 -0300
Message-ID: <20170126195308.wdea3huq5vhg4rs3@alvherre.pgsql> (raw)
In-Reply-To: <CA+TgmobLf_t-nCiZ=ECyOxbrw+sJTVXbqrxguTzBPKqB1+Rbjw@mail.gmail.com>
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Robert Haas wrote:
> On Wed, Jan 25, 2017 at 4:08 PM, Alvaro Herrera
> <alvherre@2ndquadrant.com> wrote:
> > I think the way WARM works has been pretty well hammered by now, other
> > than the CREATE INDEX CONCURRENTLY issues, so I'm looking at the code
> > from a maintainability point of view only.
> 
> Which senior hackers have previously reviewed it in detail?

The previous thread,
https://postgr.es/m/CABOikdMop5Rb_RnS2xFdAXMZGSqcJ-P-BY2ruMd+buUkJ4iDPw@mail.gmail.com
contains some discussion of it, which uncovered bugs in the initial idea
and gave rise to the current design.

> Where would I go to get a good overview of the overall theory of operation?

The added README file does a pretty good job, I thought.

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


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