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More infrastructure for btree compaction project. Tree-traversal code

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now knows what to do upon hitting a dead page (in theory anyway, it's
untested...).  Add a post-VACUUM-cleanup entry point for index AMs, to
provide a place for dead-page scavenging to happen.
Also, fix oversight that broke btpo_prev links in temporary indexes.
initdb forced due to additions in pg_am.
This commit is contained in:
Tom Lane
2003-02-22 00:45:05 +00:00
parent 4fff132d1b
commit 799bc58dc7
18 changed files with 709 additions and 345 deletions
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32
src/backend/commands/vacuum.c
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@ -13,7 +13,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.247 2003/02/09 06:56:27 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.248 2003/02/22 00:45:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -2603,17 +2603,25 @@ static void
scan_index(Relation indrel, double num_tuples)
{
IndexBulkDeleteResult *stats;
IndexVacuumCleanupInfo vcinfo;
VacRUsage ru0;
vac_init_rusage(&ru0);
/*
* Even though we're not planning to delete anything, use the
* ambulkdelete call, so that the scan happens within the index AM for
* more speed.
* Even though we're not planning to delete anything, we use the
* ambulkdelete call, because (a) the scan happens within the index AM
* for more speed, and (b) it may want to pass private statistics to
* the amvacuumcleanup call.
*/
stats = index_bulk_delete(indrel, dummy_tid_reaped, NULL);
/* Do post-VACUUM cleanup, even though we deleted nothing */
vcinfo.vacuum_full = true;
vcinfo.message_level = elevel;
stats = index_vacuum_cleanup(indrel, &vcinfo, stats);
if (!stats)
return;
@ -2622,9 +2630,9 @@ scan_index(Relation indrel, double num_tuples)
stats->num_pages, stats->num_index_tuples,
false);
elog(elevel, "Index %s: Pages %u; Tuples %.0f.\n\t%s",
elog(elevel, "Index %s: Pages %u, %u free; Tuples %.0f.\n\t%s",
RelationGetRelationName(indrel),
stats->num_pages, stats->num_index_tuples,
stats->num_pages, stats->pages_free, stats->num_index_tuples,
vac_show_rusage(&ru0));
/*
@ -2661,6 +2669,7 @@ vacuum_index(VacPageList vacpagelist, Relation indrel,
double num_tuples, int keep_tuples)
{
IndexBulkDeleteResult *stats;
IndexVacuumCleanupInfo vcinfo;
VacRUsage ru0;
vac_init_rusage(&ru0);
@ -2668,6 +2677,12 @@ vacuum_index(VacPageList vacpagelist, Relation indrel,
/* Do bulk deletion */
stats = index_bulk_delete(indrel, tid_reaped, (void *) vacpagelist);
/* Do post-VACUUM cleanup */
vcinfo.vacuum_full = true;
vcinfo.message_level = elevel;
stats = index_vacuum_cleanup(indrel, &vcinfo, stats);
if (!stats)
return;
@ -2676,8 +2691,9 @@ vacuum_index(VacPageList vacpagelist, Relation indrel,
stats->num_pages, stats->num_index_tuples,
false);
elog(elevel, "Index %s: Pages %u; Tuples %.0f: Deleted %.0f.\n\t%s",
RelationGetRelationName(indrel), stats->num_pages,
elog(elevel, "Index %s: Pages %u, %u free; Tuples %.0f: Deleted %.0f.\n\t%s",
RelationGetRelationName(indrel),
stats->num_pages, stats->pages_free,
stats->num_index_tuples - keep_tuples, stats->tuples_removed,
vac_show_rusage(&ru0));