Commit 9cf4eaa0 authored by Tom Lane's avatar Tom Lane

Fix failure to advance nextXID beyond subtransactions whose XIDs appear

only within COMMIT or ABORT records.
parent af8406bb
......@@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.184 2004/08/30 02:54:38 momjian Exp $
* $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.185 2004/08/30 19:00:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -3462,12 +3462,30 @@ xact_redo(XLogRecPtr lsn, XLogRecord *record)
if (info == XLOG_XACT_COMMIT)
{
xl_xact_commit *xlrec = (xl_xact_commit *) XLogRecGetData(record);
TransactionId *sub_xids;
TransactionId max_xid;
int i;
TransactionIdCommit(record->xl_xid);
/* Mark committed subtransactions as committed */
TransactionIdCommitTree(xlrec->nsubxacts,
(TransactionId *) &(xlrec->xnodes[xlrec->nrels]));
sub_xids = (TransactionId *) &(xlrec->xnodes[xlrec->nrels]);
TransactionIdCommitTree(xlrec->nsubxacts, sub_xids);
/* Make sure nextXid is beyond any XID mentioned in the record */
max_xid = record->xl_xid;
for (i = 0; i < xlrec->nsubxacts; i++)
{
if (TransactionIdPrecedes(max_xid, sub_xids[i]))
max_xid = sub_xids[i];
}
if (TransactionIdFollowsOrEquals(max_xid,
ShmemVariableCache->nextXid))
{
ShmemVariableCache->nextXid = max_xid;
TransactionIdAdvance(ShmemVariableCache->nextXid);
}
/* Make sure files supposed to be dropped are dropped */
for (i = 0; i < xlrec->nrels; i++)
{
......@@ -3478,12 +3496,30 @@ xact_redo(XLogRecPtr lsn, XLogRecord *record)
else if (info == XLOG_XACT_ABORT)
{
xl_xact_abort *xlrec = (xl_xact_abort *) XLogRecGetData(record);
TransactionId *sub_xids;
TransactionId max_xid;
int i;
TransactionIdAbort(record->xl_xid);
/* mark subtransactions as aborted */
TransactionIdAbortTree(xlrec->nsubxacts,
(TransactionId *) &(xlrec->xnodes[xlrec->nrels]));
/* Mark subtransactions as aborted */
sub_xids = (TransactionId *) &(xlrec->xnodes[xlrec->nrels]);
TransactionIdAbortTree(xlrec->nsubxacts, sub_xids);
/* Make sure nextXid is beyond any XID mentioned in the record */
max_xid = record->xl_xid;
for (i = 0; i < xlrec->nsubxacts; i++)
{
if (TransactionIdPrecedes(max_xid, sub_xids[i]))
max_xid = sub_xids[i];
}
if (TransactionIdFollowsOrEquals(max_xid,
ShmemVariableCache->nextXid))
{
ShmemVariableCache->nextXid = max_xid;
TransactionIdAdvance(ShmemVariableCache->nextXid);
}
/* Make sure files supposed to be dropped are dropped */
for (i = 0; i < xlrec->nrels; i++)
{
......
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