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Postgres FD Implementation
Commit 8a45a2e9 authored by Tom Lane's avatar Tom Lane
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Fix miscalculation of remaining free space during tuple chain moving. 

Only affects machines where MAXALIGN > 4, and is a boundary-condition
case even there, but still surprising that it's not been identified
before.  Also reduce tuple chain move give-up messages from WARNING
to DEBUG1, since they are not unexpected conditions.
parent 5936055d
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Showing with 8 additions and 8 deletions
src/backend/commands/vacuum.c
View file @ 8a45a2e9
......@@ -13,7 +13,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.243 2002/10/21 22:06:19 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.244 2002/10/31 19:25:29 tgl Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -1079,7 +1079,7 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
relname, blkno);
PageInit(page, BufferGetPageSize(buf), 0);
vacpage->free = ((PageHeader) page)->pd_upper - ((PageHeader) page)->pd_lower;
free_size += (vacpage->free - sizeof(ItemIdData));
free_size += vacpage->free;
new_pages++;
empty_end_pages++;
vacpagecopy = copy_vac_page(vacpage);
......@@ -1092,7 +1092,7 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
if (PageIsEmpty(page))
{
vacpage->free = ((PageHeader) page)->pd_upper - ((PageHeader) page)->pd_lower;
free_size += (vacpage->free - sizeof(ItemIdData));
free_size += vacpage->free;
empty_pages++;
empty_end_pages++;
vacpagecopy = copy_vac_page(vacpage);
......@@ -1667,7 +1667,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
/* Quick exit if we have no vtlinks to search in */
if (vacrelstats->vtlinks == NULL)
{
elog(WARNING, "Parent item in update-chain not found - can't continue repair_frag");
elog(DEBUG1, "Parent item in update-chain not found - can't continue repair_frag");
break; /* out of walk-along-page loop */
}
......@@ -1704,7 +1704,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
* in scan_heap(), but it's not implemented at the
* moment and so we just stop shrinking here.
*/
elog(WARNING, "Child itemid in update-chain marked as unused - can't continue repair_frag");
elog(DEBUG1, "Child itemid in update-chain marked as unused - can't continue repair_frag");
chain_move_failed = true;
break; /* out of loop to move to chain end */
}
......@@ -1753,7 +1753,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
}
to_vacpage->free -= MAXALIGN(tlen);
if (to_vacpage->offsets_used >= to_vacpage->offsets_free)
to_vacpage->free -= MAXALIGN(sizeof(ItemIdData));
to_vacpage->free -= sizeof(ItemIdData);
(to_vacpage->offsets_used)++;
if (free_vtmove == 0)
{
......@@ -1789,7 +1789,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
if (vtlp == NULL)
{
/* see discussion above */
elog(WARNING, "Parent item in update-chain not found - can't continue repair_frag");
elog(DEBUG1, "Parent item in update-chain not found - can't continue repair_frag");
chain_move_failed = true;
break; /* out of check-all-items loop */
}
......@@ -1825,7 +1825,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
HeapTupleHeaderGetXmin(tp.t_data))))
{
ReleaseBuffer(Pbuf);
elog(WARNING, "Too old parent tuple found - can't continue repair_frag");
elog(DEBUG1, "Too old parent tuple found - can't continue repair_frag");
chain_move_failed = true;
break; /* out of check-all-items loop */
}
......
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