Re: Another possible corruption bug in 9.3.2 or possibly a known MultiXact problem?

On 2014-02-26 18:18:05 -0300, Alvaro Herrera wrote:
> Andres Freund wrote:
> 
> > static void
> > heap_xlog_lock(XLogRecPtr lsn, XLogRecord *record)
> > {
> > ...
> >     HeapTupleHeaderClearHotUpdated(htup);
> >     HeapTupleHeaderSetXmax(htup, xlrec->locking_xid);
> >     HeapTupleHeaderSetCmax(htup, FirstCommandId, false);
> >     /* Make sure there is no forward chain link in t_ctid */
> >     htup->t_ctid = xlrec->target.tid;
> > ...
> > }
> 
> I think the fix is to reset HOT_UPDATED and t_ctid only if the infomask
> says the tuple is LOCKED_ONLY, per the attached patch.

Looks good to me.

Greetings,

Andres Freund

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