Re: [DBmirror Issue] recordchange() dies in packageData unless there is a PRIMARY KEY on DELETE and UPDATEs.

From: "Rajesh Kumar Mallah(dot)" <mallah(at)trade-india(dot)com>
To: Steven Singer <ssinger(at)navtechinc(dot)com>
Cc: <pgsql-admin(at)postgresql(dot)org>, <pgsql-replication(at)postgresql(dot)org>
Subject: Re: [DBmirror Issue] recordchange() dies in packageData unless there is a PRIMARY KEY on DELETE and UPDATEs.
Date: 2002-09-24 07:33:07
Message-ID: 200209241303.07081.mallah@trade-india.com
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Hi can you help me with applying the patch
i dunno much abt patch

# patch -p0 < patch
patch: **** malformed patch at line 7: PRIMARY);

regds
mallah.

On Tuesday 24 September 2002 02:18, Steven Singer wrote:
> On Mon, 23 Sep 2002, Rajesh Kumar Mallah. wrote:
> > Hi
> >
> > Is anyone using dbmirror in production?
>
> We've been using it in production for sometime now and haven't been having
> any problems with it.
>
> > I Intend to replicate a set of tables between local and remote servers.
> > and plan to use dbmirror.
>
> The speed of replicating edits over a WAN isn't that great.
> If you perform a lot of edits in a short period of time there could be a
> backlog.
>
> > I observe that unless a table has a primary key the trigger
> > recordchange() which is supposed to be attached to a replicated table
> > does not works properly and causes postmaster to crash.
>
> dbmirror requires that all tables that you replicate have primary
> keys(This should be said more explictly in the README)
>
> However it still should not crash(In defence it will only crash the
> postmaster when you compile dbmirror in debug mode).
>
> The attatched patch to pending.c should prevent it from crashing the
> postmaster. Let me know if it fixes the problem and I'll submit it to
> pgpatches.
>
>
> *** pending.c Mon Sep 23 20:24:04 2002
> --- /tmp/pending.c Mon Sep 23 20:23:43 2002
> ***************
> *** 226,232 ****
> /* pplan = SPI_saveplan(pplan); */
> cpKeyData = packageData(tTupleData, tTupleDesc, tpTrigData,
> PRIMARY);
> #if defined DEBUG_OUTPUT
> ! elog(NOTICE, cpKeyData);
> #endif
> saPlanData[0] = PointerGetDatum(cpKeyData);
>
> --- 226,235 ----
> /* pplan = SPI_saveplan(pplan); */
> cpKeyData = packageData(tTupleData, tTupleDesc, tpTrigData,
> PRIMARY);
> #if defined DEBUG_OUTPUT
> ! if(cpKeyData != NULL )
> ! {
> ! elog(NOTICE, cpKeyData);
> ! }
> #endif
> saPlanData[0] = PointerGetDatum(cpKeyData);

--
Rajesh Kumar Mallah,
Project Manager (Development)
Infocom Network Limited, New Delhi
phone: +91(11)6152172 (221) (L) ,9811255597 (M)

Visit http://www.trade-india.com ,
India's Leading B2B eMarketplace.

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