rows were removed from the heap by the VACUUM.
Simon Riggs
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/gist/gistvacuum.c,v 1.11 2005/11/22 18:17:05 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/access/gist/gistvacuum.c,v 1.12 2006/02/11 16:59:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
if (chldtuple.ituplen > 1)
{
/*
- * child was splitted, so we need mark completion
+ * child was split, so we need mark completion
* insert(split)
*/
int j;
}
/*
- * For usial vacuum just update FSM, for full vacuum
+ * For usual vacuum just update FSM, for full vacuum
* reforms parent tuples if some of childs was deleted or changed,
- * update invalid tuples (they can exsist from last crash recovery only),
+ * update invalid tuples (they can exist from last crash recovery only),
* tries to get smaller index
*/
*ptr;
bool needLock;
- stack = (GistBDItem *) palloc0(sizeof(GistBDItem));
+ if (callback_state)
+ {
+ stack = (GistBDItem *) palloc0(sizeof(GistBDItem));
- stack->blkno = GIST_ROOT_BLKNO;
- needFullVacuum = false;
+ stack->blkno = GIST_ROOT_BLKNO;
+ needFullVacuum = false;
+ }
+ else
+ stack = NULL;
while (stack)
{
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/hash/hash.c,v 1.83 2006/01/25 23:26:11 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/hash/hash.c,v 1.84 2006/02/11 16:59:09 momjian Exp $
*
* NOTES
* This file contains only the public interface routines.
tuples_removed = 0;
num_index_tuples = 0;
+ /* return statistics */
+ num_pages = RelationGetNumberOfBlocks(rel);
+
+ result = (IndexBulkDeleteResult *) palloc0(sizeof(IndexBulkDeleteResult));
+ result->num_pages = num_pages;
+
+ if (!callback_state)
+ {
+ PG_RETURN_POINTER(result);
+ }
+
/*
* Read the metapage to fetch original bucket and tuple counts. Also, we
* keep a copy of the last-seen metapage so that we can use its
_hash_wrtbuf(rel, metabuf);
- /* return statistics */
- num_pages = RelationGetNumberOfBlocks(rel);
-
- result = (IndexBulkDeleteResult *) palloc0(sizeof(IndexBulkDeleteResult));
- result->num_pages = num_pages;
result->num_index_tuples = num_index_tuples;
result->tuples_removed = tuples_removed;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/index/indexam.c,v 1.87 2005/12/03 05:51:00 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/index/indexam.c,v 1.88 2006/02/11 16:59:09 momjian Exp $
*
* INTERFACE ROUTINES
* index_open - open an index relation by relation OID
* callback routine tells whether a given main-heap tuple is
* to be deleted
*
+ * passing NULL callback_state can be interpreted by the
+ * index access method as meaning that the index does not need
+ * to be scanned in logical sequence to remove rows for this call
+ * index_vacuum_cleanup is always required after this, however.
+ *
* return value is an optional palloc'd struct of statistics
* ----------------
*/
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/nbtree/nbtree.c,v 1.136 2006/01/25 23:04:20 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/nbtree/nbtree.c,v 1.137 2006/02/11 16:59:09 momjian Exp $
*
*-------------------------------------------------------------------------
*/
double num_index_tuples;
OffsetNumber deletable[MaxOffsetNumber];
int ndeletable;
- Buffer buf;
+ Buffer buf = NULL;
BlockNumber num_pages;
+ bool scanindex = true;
tuples_removed = 0;
num_index_tuples = 0;
* skip obtaining exclusive lock on empty pages though, since no indexscan
* could be stopped on those.
*/
- buf = _bt_get_endpoint(rel, 0, false);
- if (BufferIsValid(buf)) /* check for empty index */
+ if (callback_state)
+ {
+ buf = _bt_get_endpoint(rel, 0, false);
+ scanindex = BufferIsValid(buf); /* check for empty index */
+ }
+ else
+ scanindex = false;
+
+ if (scanindex)
{
for (;;)
{
result = (IndexBulkDeleteResult *) palloc0(sizeof(IndexBulkDeleteResult));
result->num_pages = num_pages;
- result->num_index_tuples = num_index_tuples;
+ if (scanindex)
+ result->num_index_tuples = num_index_tuples;
+ else
+ result->num_index_tuples = -1;
result->tuples_removed = tuples_removed;
PG_RETURN_POINTER(result);
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.321 2006/01/18 20:35:05 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.322 2006/02/11 16:59:09 momjian Exp $
*
*-------------------------------------------------------------------------
*/
/* overwrite the existing statistics in the tuple */
pgcform = (Form_pg_class) GETSTRUCT(&rtup);
pgcform->relpages = (int32) num_pages;
- pgcform->reltuples = (float4) num_tuples;
+ if (num_tuples >= 0 )
+ pgcform->reltuples = (float4) num_tuples;
pgcform->relhasindex = hasindex;
/*
if (!stats)
return;
- /* now update statistics in pg_class */
+ /* now update statistics in pg_class
+ * we use the number of tuples from the table because we have not
+ * actually scanned the index, so don't know the number of tuples in index
+ */
vac_update_relstats(RelationGetRelid(indrel),
- stats->num_pages, stats->num_index_tuples,
+ stats->num_pages, num_tuples,
false);
ereport(elevel,
(errmsg("index \"%s\" now contains %.0f row versions in %u pages",
RelationGetRelationName(indrel),
- stats->num_index_tuples,
+ num_tuples,
stats->num_pages),
errdetail("%u index pages have been deleted, %u are currently reusable.\n"
"%s.",
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.63 2005/11/22 18:17:09 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.64 2006/02/11 16:59:09 momjian Exp $
*
*-------------------------------------------------------------------------
*/
if (!stats)
return;
- /* now update statistics in pg_class */
+ /* now update statistics in pg_class
+ * we use the number of tuples from the table because we have not
+ * actually scanned the index, so don't know the number of tuples in index
+ */
vac_update_relstats(RelationGetRelid(indrel),
stats->num_pages,
- stats->num_index_tuples,
+ vacrelstats->rel_tuples,
false);
ereport(elevel,
(errmsg("index \"%s\" now contains %.0f row versions in %u pages",
RelationGetRelationName(indrel),
- stats->num_index_tuples,
+ vacrelstats->rel_tuples,
stats->num_pages),
errdetail("%u index pages have been deleted, %u are currently reusable.\n"
"%s.",
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/access/genam.h,v 1.54 2005/12/03 05:51:03 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/access/genam.h,v 1.55 2006/02/11 16:59:09 momjian Exp $
*
*-------------------------------------------------------------------------
*/
BlockNumber num_pages; /* pages remaining in index */
BlockNumber pages_removed; /* # removed by bulk-delete operation */
double num_index_tuples; /* tuples remaining */
+ /* should set to -1 if index not scanned */
+ /* because no records to delete */
double tuples_removed; /* # removed by bulk-delete operation */
BlockNumber pages_deleted; /* # unused pages in index */
BlockNumber pages_free; /* # pages available for reuse */
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