database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-10-19 15:49:24 +03:00
Code Activity

Make relhasrules and relhastriggers work like relhasindex, namely we let

Browse Source 
VACUUM reset them to false rather than trying to clean 'em up during DROP.
This commit is contained in:
Tom Lane
2008-11-10 00:49:37 +00:00
parent e4718f2c9e
commit c5451c22e3
7 changed files with 67 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/backend/commands/vacuum.c
View File

@@ -13,7 +13,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.379 2008/10/31 15:05:00 heikki Exp $
* $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.380 2008/11/10 00:49:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -664,6 +664,11 @@ vacuum_set_xid_limits(int freeze_min_age, bool sharedRel,
* pg_class would've been obsoleted. Of course, this only works for
* fixed-size never-null columns, but these are.
*
* Note another assumption: that two VACUUMs/ANALYZEs on a table can't
* run in parallel, nor can VACUUM/ANALYZE run in parallel with a
* schema alteration such as adding an index, rule, or trigger. Otherwise
* our updates of relhasindex etc might overwrite uncommitted updates.
*
* Another reason for doing it this way is that when we are in a lazy
* VACUUM and have PROC_IN_VACUUM set, we mustn't do any updates ---
* somebody vacuuming pg_class might think they could delete a tuple
@@ -673,9 +678,11 @@ vacuum_set_xid_limits(int freeze_min_age, bool sharedRel,
* ANALYZE.
*/
void
vac_update_relstats(Oid relid, BlockNumber num_pages, double num_tuples,
vac_update_relstats(Relation relation,
BlockNumber num_pages, double num_tuples,
bool hasindex, TransactionId frozenxid)
{
Oid relid = RelationGetRelid(relation);
Relation rd;
HeapTuple ctup;
Form_pg_class pgcform;
@@ -724,6 +731,18 @@ vac_update_relstats(Oid relid, BlockNumber num_pages, double num_tuples,
}
}
/* We also clear relhasrules and relhastriggers if needed */
if (pgcform->relhasrules && relation->rd_rules == NULL)
{
pgcform->relhasrules = false;
dirty = true;
}
if (pgcform->relhastriggers && relation->trigdesc == NULL)
{
pgcform->relhastriggers = false;
dirty = true;
}
/*
* relfrozenxid should never go backward. Caller can pass
* InvalidTransactionId if it has no new data.
@@ -1269,9 +1288,9 @@ full_vacuum_rel(Relation onerel, VacuumStmt *vacstmt)
FreeSpaceMapVacuum(onerel);
/* update statistics in pg_class */
vac_update_relstats(RelationGetRelid(onerel), vacrelstats->rel_pages,
vacrelstats->rel_tuples, vacrelstats->hasindex,
FreezeLimit);
vac_update_relstats(onerel,
vacrelstats->rel_pages, vacrelstats->rel_tuples,
vacrelstats->hasindex, FreezeLimit);
/* report results to the stats collector, too */
pgstat_report_vacuum(RelationGetRelid(onerel), onerel->rd_rel->relisshared,
@@ -3315,7 +3334,7 @@ scan_index(Relation indrel, double num_tuples)
return;
/* now update statistics in pg_class */
vac_update_relstats(RelationGetRelid(indrel),
vac_update_relstats(indrel,
stats->num_pages, stats->num_index_tuples,
false, InvalidTransactionId);
@@ -3385,7 +3404,7 @@ vacuum_index(VacPageList vacpagelist, Relation indrel,
return;
/* now update statistics in pg_class */
vac_update_relstats(RelationGetRelid(indrel),
vac_update_relstats(indrel,
stats->num_pages, stats->num_index_tuples,
false, InvalidTransactionId);