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Utilize the visibility map in autovacuum, too. There was an oversight in

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the visibility map patch that because autovacuum always sets
VacuumStmt->freeze_min_age, visibility map was never used for autovacuum,
only for manually launched vacuums. This patch introduces a new scan_all
field to VacuumStmt, indicating explicitly whether the visibility map
should be used, or the whole relation should be scanned, to advance
relfrozenxid. Anti-wraparound vacuums still need to scan all pages.
This commit is contained in:
Heikki Linnakangas
2008-12-04 11:42:24 +00:00
parent 69b3383cfb
commit 7537f52a00
6 changed files with 14 additions and 14 deletions
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3
src/include/nodes/parsenodes.h
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@@ -13,7 +13,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.379 2008/11/24 08:46:04 petere Exp $
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.380 2008/12/04 11:42:24 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1966,6 +1966,7 @@ typedef struct VacuumStmt
bool full; /* do FULL (non-concurrent) vacuum */
bool analyze; /* do ANALYZE step */
bool verbose; /* print progress info */
bool scan_all; /* force scan of all pages */
int freeze_min_age; /* min freeze age, or -1 to use default */
RangeVar *relation; /* single table to process, or NULL */
List *va_cols; /* list of column names, or NIL for all */