Re: [DBmirror Issue] recordchange() dies in packageData unless

Your patch has been added to the PostgreSQL unapplied patches list at:

    http://candle.pha.pa.us/cgi-bin/pgpatches

I will try to apply it within the next 48 hours.

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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);
>
>
>
>
>
> --
> Steven Singer                                       ssinger@navtechinc.com
> Aircraft Performance Systems                Phone:  519-747-1170 ext 282
> Navtech Systems Support Inc.                AFTN:   CYYZXNSX SITA: YYZNSCR
> Waterloo, Ontario                           ARINC:  YKFNSCR
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>

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