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HeapTupleHeaderAdjustCmax made the incorrect assumption that the raw

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command id is the cmin, when it can in fact be a combo cid. That made rows
incorrectly invisible to a transaction where a tuple was deleted by multiple
aborted subtransactions.

Report and patch Karl Schnaitter. Back-patch to 8.3, where combo cids was
introduced.
This commit is contained in:
Heikki Linnakangas 2008-09-01 18:52:45 +00:00
parent 86ec73b909
commit 9ac4299163
1 changed files with 2 additions and 2 deletions
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4
src/backend/utils/time/combocid.c
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@ -34,7 +34,7 @@
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/time/combocid.c,v 1.4 2008/01/01 19:45:55 momjian Exp $ * $PostgreSQL: pgsql/src/backend/utils/time/combocid.c,v 1.5 2008/09/01 18:52:45 heikki Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -155,7 +155,7 @@ HeapTupleHeaderAdjustCmax(HeapTupleHeader tup,
if (!(tup->t_infomask & HEAP_XMIN_COMMITTED) && if (!(tup->t_infomask & HEAP_XMIN_COMMITTED) &&
TransactionIdIsCurrentTransactionId(HeapTupleHeaderGetXmin(tup))) TransactionIdIsCurrentTransactionId(HeapTupleHeaderGetXmin(tup)))
{ {
CommandId cmin = HeapTupleHeaderGetRawCommandId(tup); CommandId cmin = HeapTupleHeaderGetCmin(tup);
*cmax = GetComboCommandId(cmin, *cmax); *cmax = GetComboCommandId(cmin, *cmax);
*iscombo = true; *iscombo = true;