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Add vacuum_freeze_table_age GUC option, to control when VACUUM should

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ignore the visibility map and scan the whole table, to advance
relfrozenxid.
This commit is contained in:
Heikki Linnakangas
2009-01-16 13:27:24 +00:00
parent 19afb4e805
commit 6587818542
16 changed files with 170 additions and 54 deletions
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6
src/backend/commands/cluster.c
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.180 2009/01/01 17:23:37 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.181 2009/01/16 13:27:23 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@ -789,8 +789,8 @@ copy_heap_data(Oid OIDNewHeap, Oid OIDOldHeap, Oid OIDOldIndex)
* freeze_min_age to avoid having CLUSTER freeze tuples earlier than a
* plain VACUUM would.
*/
vacuum_set_xid_limits(-1, OldHeap->rd_rel->relisshared,
&OldestXmin, &FreezeXid);
vacuum_set_xid_limits(-1, -1, OldHeap->rd_rel->relisshared,
&OldestXmin, &FreezeXid, NULL);
/*
* FreezeXid will become the table's new relfrozenxid, and that mustn't