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During swap_relfilenodes, swap relation size statistic fields along with 

the relfilenode and toast fields.  This ensures that the newly-computed
statistics will be available on completion of CLUSTER.
This commit is contained in:
Tom Lane 2002-11-02 21:20:40 +00:00
parent 5123139210
commit e02d1abee6
1 changed files with 15 additions and 1 deletions
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16
src/backend/commands/cluster.c
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/cluster.c,v 1.90 2002/09/04 20:31:14 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/cluster.c,v 1.91 2002/11/02 21:20:40 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -475,6 +475,20 @@ swap_relfilenodes(Oid r1, Oid r2)
/* we should not swap reltoastidxid */
/* swap size statistics too, since new rel has freshly-updated stats */
{
int4 swap_pages;
float4 swap_tuples;
swap_pages = relform1->relpages;
relform1->relpages = relform2->relpages;
relform2->relpages = swap_pages;
swap_tuples = relform1->reltuples;
relform1->reltuples = relform2->reltuples;
relform2->reltuples = swap_tuples;
}
/* Update the tuples in pg_class */
simple_heap_update(relRelation, &reltup1->t_self, reltup1);
simple_heap_update(relRelation, &reltup2->t_self, reltup2);