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Transaction IDs wrap around, per my proposal of 13-Aug-01. More

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documentation to come, but the code is all here.  initdb forced.
This commit is contained in:
Tom Lane
2001-08-26 16:56:03 +00:00
parent d1ee78f296
commit bc7d37a525
29 changed files with 617 additions and 171 deletions
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10
src/backend/catalog/index.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/catalog/index.c,v 1.162 2001/08/22 18:24:26 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/catalog/index.c,v 1.163 2001/08/26 16:55:59 tgl Exp $
*
*
* INTERFACE ROUTINES
@@ -1692,7 +1692,7 @@ IndexBuildHeapScan(Relation heapRelation,
TupleTableSlot *slot;
ExprContext *econtext;
Snapshot snapshot;
TransactionId XmaxRecent;
TransactionId OldestXmin;
/*
* sanity checks
@@ -1731,12 +1731,12 @@ IndexBuildHeapScan(Relation heapRelation,
if (IsBootstrapProcessingMode())
{
snapshot = SnapshotNow;
XmaxRecent = InvalidTransactionId;
OldestXmin = InvalidTransactionId;
}
else
{
snapshot = SnapshotAny;
GetXmaxRecent(&XmaxRecent);
OldestXmin = GetOldestXmin(heapRelation->rd_rel->relisshared);
}
scan = heap_beginscan(heapRelation, /* relation */
@@ -1769,7 +1769,7 @@ IndexBuildHeapScan(Relation heapRelation,
LockBuffer(scan->rs_cbuf, BUFFER_LOCK_SHARE);
sv_infomask = heapTuple->t_data->t_infomask;
switch (HeapTupleSatisfiesVacuum(heapTuple->t_data, XmaxRecent))
switch (HeapTupleSatisfiesVacuum(heapTuple->t_data, OldestXmin))
{
case HEAPTUPLE_DEAD:
indexIt = false;