From b9b8831ad60f6e4bd580fe6dbe9749359298a3c4 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sun, 7 Feb 2010 20:48:13 +0000 Subject: Create a "relation mapping" infrastructure to support changing the relfilenodes of shared or nailed system catalogs. This has two key benefits: * The new CLUSTER-based VACUUM FULL can be applied safely to all catalogs. * We no longer have to use an unsafe reindex-in-place approach for reindexing shared catalogs. CLUSTER on nailed catalogs now works too, although I left it disabled on shared catalogs because the resulting pg_index.indisclustered update would only be visible in one database. Since reindexing shared system catalogs is now fully transactional and crash-safe, the former special cases in REINDEX behavior have been removed; shared catalogs are treated the same as non-shared. This commit does not do anything about the recently-discussed problem of deadlocks between VACUUM FULL/CLUSTER on a system catalog and other concurrent queries; will address that in a separate patch. As a stopgap, parallel_schedule has been tweaked to run vacuum.sql by itself, to avoid such failures during the regression tests. --- src/backend/bootstrap/bootstrap.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'src/backend/bootstrap/bootstrap.c') diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c index 14e4b839e44..d2b7c1e5854 100644 --- a/src/backend/bootstrap/bootstrap.c +++ b/src/backend/bootstrap/bootstrap.c @@ -8,7 +8,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.258 2010/01/22 16:40:18 rhaas Exp $ + * $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.259 2010/02/07 20:48:09 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -42,6 +42,7 @@ #include "utils/fmgroids.h" #include "utils/memutils.h" #include "utils/ps_status.h" +#include "utils/relmapper.h" #include "utils/tqual.h" extern int optind; @@ -491,6 +492,12 @@ BootstrapModeMain(void) */ boot_yyparse(); + /* + * We should now know about all mapped relations, so it's okay to + * write out the initial relation mapping files. + */ + RelationMapFinishBootstrap(); + /* Perform a checkpoint to ensure everything's down to disk */ SetProcessingMode(NormalProcessing); CreateCheckPoint(CHECKPOINT_IS_SHUTDOWN | CHECKPOINT_IMMEDIATE); -- cgit v1.2.3