| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Hannu Krosing <hannu(at)2ndQuadrant(dot)com>, Jeff Davis <pgsql(at)j-davis(dot)com>, Asko Oja <ascoja(at)gmail(dot)com>, Kenneth Marshall <ktm(at)rice(dot)edu>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [PATCHES] updated hash functions for postgresql v1 |
| Date: | 2009-10-29 14:10:56 |
| Message-ID: | 1256825456.22925.30.camel@fsopti579.F-Secure.com |
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| Lists: | pgsql-hackers |
On Thu, 2009-10-29 at 09:32 -0400, Tom Lane wrote:
> Hannu Krosing <hannu(at)2ndQuadrant(dot)com> writes:
> > Or maybe we could just extract the hashes form some version of stock
> > postgresql (say 8.3) and then make those available in contrib under the
> > name "stable_hashes" ?
>
> A better name would be "wishful_thinking" ... contrib does not have
> control over some of the main risk factors, such as changes to the
> internal representation of datatypes.
Good point. But the internal layout of data types popular for use as
hash key changes rarely. The hash function change, however, is a
showstopper for everyone concerned.
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