From: | David Fetter <david(at)fetter(dot)org> |
---|---|
To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
Cc: | Jonathan Beit-Aharon <jbeitaharon(at)intrusic(dot)com>, PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org>, Joe Conway <mail(at)joeconway(dot)com> |
Subject: | Re: [HACKERS] Patching dblink.c to avoid warning about open transaction |
Date: | 2005-10-07 03:22:04 |
Message-ID: | 20051007032204.GH30487@fetter.org |
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Lists: | pgsql-hackers pgsql-patches |
On Thu, Oct 06, 2005 at 10:38:54PM -0400, Bruce Momjian wrote:
> > I'm not a member of this list (yet), so please CC me on responses
> > and discussion. The patch below seems to be completion of work
> > already started, because the boolean remoteTrFlag was already
> > defined, and all I had to add was its setting and two references.
> > I hope someone will find it useful,
> >
> > Jonathan
>
> I have worked on this issue and have an extensive patch to dblink to
> fix it.
>
> The reported problem is that dblink_open/dblink_close() (for cursor
> reads) do a BEGIN/COMMIT regardless of the transaction state of the
> remote connection. There was code in dblink.c to track the remote
> transaction state (rconn), but it was not being maintained or used.
>
> This patch fixes that by routing all connections through an rconn
> structure and using the transaction status properly. I removed the
> global persistent connection and function-local 'conn' structures in
> favor of using rconn consistently. This cleans up a lot of
> error-prone code that tried to track what type of connection was
> being used.
>
> I don't know if people want this for 8.1 or 8.2.
8.1, IMHO. It's a bug fix. :)
Cheers,
D
--
David Fetter david(at)fetter(dot)org http://fetter.org/
phone: +1 510 893 6100 mobile: +1 415 235 3778
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