From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Why don't we have a small reserved OID range for patch revisions? |
Date: | 2019-02-28 23:57:12 |
Message-ID: | CAH2-Wz=zooAfO5jndTkoVZsk+2cCmPX5AD_g+wD+E4j--U1sfQ@mail.gmail.com |
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On Thu, Feb 28, 2019 at 3:40 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> >>> just as a thought, what if we stopped assigning manual OIDs for new
> >>> catalog entries altogether, except for once at the end of each release
> >>> cycle?
>
> Actually ... that leads to an idea that wouldn't add any per-commit
> overhead, or really much change at all to existing processes. Given
> the existence of a reliable OID-renumbering tool, we could:
> In this scheme, OID collisions are a problem for in-progress patches
> only if two patches are unlucky enough to choose the same random
> high OIDs during the same devel cycle. That's unlikely, or at least
> a good bit less likely than collisions are today.
That sounds like a reasonable compromise. Perhaps the unused_oids
script could give specific guidance on using a randomly determined
small range of contiguous OIDs that fall within the current range for
that devel cycle. That would prevent collisions caused by the natural
human tendency to prefer a round number. Having contiguous OIDs for
the same patch seems worth preserving.
--
Peter Geoghegan
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