Horton

Re: Minmax indexes

Josh Berkus <josh@agliodbs.com>

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From: Josh Berkus <josh@agliodbs.com>
To: Alvaro Herrera <alvherre@2ndquadrant.com>, Claudio Freire <klaussfreire@gmail.com>
Cc: Heikki Linnakangas <hlinnakangas@vmware.com>, Andres Freund <andres@2ndquadrant.com>, Robert Haas <robertmhaas@gmail.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2014-07-09T22:45:20Z
Lists: pgsql-hackers 
On 07/09/2014 02:16 PM, Alvaro Herrera wrote:
> The way it works now, each opclass needs to have three support
> procedures; I've called them getOpers, maybeUpdateValues, and compare.
> (I realize these names are pretty bad, and will be changing them.)

I kind of like "maybeUpdateValues".  Very ... NoSQL-ish.  "Maybe update
the values, maybe not."  ;-)

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com

Commits

  1. Refactor per-page logic common to all redo routines to a new function.

  2. Reduce use of heavyweight locking inside hash AM.

  3. Scan the buffer pool just once, not once per fork, during relation drop.

  4. Major patch from Thomas Lockhart <Thomas.G.Lockhart@jpl.nasa.gov>