Re: pg_upgrade problem with invalid indexes

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Andres Freund <andres(at)2ndquadrant(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_upgrade problem with invalid indexes
Date: 2012-12-07 19:24:49
Message-ID: 20121207192449.GC8889@momjian.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On Fri, Dec 7, 2012 at 11:57:34AM -0500, Bruce Momjian wrote:
> On Fri, Dec 7, 2012 at 11:46:51AM -0500, Tom Lane wrote:
> > Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > > On Fri, Dec 7, 2012 at 10:29:22AM -0500, Tom Lane wrote:
> > >> On balance I am coming around to support the "just throw an error if
> > >> there are any invalid indexes" position. Adding extra complication in
> > >> pg_dump and pg_upgrade to handle ignoring them doesn't seem like a good
> > >> idea --- for one thing, it will evidently weaken the strength of the
> > >> same-number-of-relations cross-check.
> >
> > > The check would remain the same --- the change would be to prevent
> > > invalid indexes from being considered on both the old and new servers.
> >
> > But that weakens the check. For instance, if you had seven invalid
> > indexes in one cluster and eight in the other, you wouldn't notice.
>
> That is true, though the assumption is that invalid indexes are
> insignficant. It would be a new case where actual non-system-table
> _files_ were not transfered.
>
> Seems most people want the error so I will start working on a patch.

Patch attached.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ It's impossible for everything to be true. +

Attachment Content-Type Size
invalid.diff text/x-diff 3.8 KB

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Karl O. Pinc 2012-12-07 20:50:48 Re: User control over psql error stream
Previous Message Andres Freund 2012-12-07 19:10:04 Re: pg_upgrade problem with invalid indexes