Re: BUG #8680: Fix initialization of pg_clog and pg_subtrans during hot standby startup - Mailing list pgsql-bugs

From Andres Freund
Subject Re: BUG #8680: Fix initialization of pg_clog and pg_subtrans during hot standby startup
Date
Msg-id 20131227094930.GB25163@alap2.anarazel.de
Whole thread Raw
In response to BUG #8680: Fix initialization of pg_clog and pg_subtrans during hot standby startup  (launchpad@maletin.de)
List pgsql-bugs
Hi,

On 2013-12-13 10:50:12 +0000, launchpad@maletin.de wrote:
> A table has a primary key.
> We use pg_basebackup to start a
> streaming replication server.
> after a trigger, this standby is
> used as master and the primary key
> is shown as valid and there are no
> duplicates.
>
>
> alter table t add column c int4 not null default 0;
> FEHLER:  konnte Unique Index »t_pkey« nicht erstellen
> DETAIL:  Schlüssel (username, authority)=(malu001, ROLE_STEUER) ist doppelt
> vorhanden.
>
>
> It looks like a bug that is fixed in
> 9.2.6, but i can't believe, that this
> bug was introduced in 9.2.5, because we
> can reproduce this with 9.2.4.
> But only with massive work while the
> basebackup is in progress.

I don't think this is necessarily related. How are you performing the
base backup? I guess you're not using pg_basebackup?

Greetings,

Andres Freund

--
 Andres Freund                       http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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