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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2010-02-07 20:48:13 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2010-02-07 20:48:13 +0000 |
| commit | b9b8831ad60f6e4bd580fe6dbe9749359298a3c4 (patch) | |
| tree | af6948498f13a43edd982b05808ed89b5b8191ab /src/backend/access/transam/rmgr.c | |
| parent | 7fc30c488fc6e9674564206193c29b1a657a818f (diff) | |
| download | postgresql-b9b8831ad60f6e4bd580fe6dbe9749359298a3c4.tar.gz postgresql-b9b8831ad60f6e4bd580fe6dbe9749359298a3c4.zip | |
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.
Diffstat (limited to 'src/backend/access/transam/rmgr.c')
| -rw-r--r-- | src/backend/access/transam/rmgr.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/backend/access/transam/rmgr.c b/src/backend/access/transam/rmgr.c index 7e1e0f60fc3..8038b25d1d0 100644 --- a/src/backend/access/transam/rmgr.c +++ b/src/backend/access/transam/rmgr.c @@ -3,7 +3,7 @@ * * Resource managers definition * - * $PostgreSQL: pgsql/src/backend/access/transam/rmgr.c,v 1.28 2009/12/19 01:32:33 sriggs Exp $ + * $PostgreSQL: pgsql/src/backend/access/transam/rmgr.c,v 1.29 2010/02/07 20:48:09 tgl Exp $ */ #include "postgres.h" @@ -22,6 +22,7 @@ #include "commands/tablespace.h" #include "storage/freespace.h" #include "storage/standby.h" +#include "utils/relmapper.h" const RmgrData RmgrTable[RM_MAX_ID + 1] = { @@ -32,7 +33,7 @@ const RmgrData RmgrTable[RM_MAX_ID + 1] = { {"Database", dbase_redo, dbase_desc, NULL, NULL, NULL}, {"Tablespace", tblspc_redo, tblspc_desc, NULL, NULL, NULL}, {"MultiXact", multixact_redo, multixact_desc, NULL, NULL, NULL}, - {"Reserved 7", NULL, NULL, NULL, NULL, NULL}, + {"RelMap", relmap_redo, relmap_desc, NULL, NULL, NULL}, {"Standby", standby_redo, standby_desc, NULL, NULL, NULL}, {"Heap2", heap2_redo, heap2_desc, NULL, NULL, NULL}, {"Heap", heap_redo, heap_desc, NULL, NULL, NULL}, |