diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2006-11-05 22:42:10 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2006-11-05 22:42:10 +0000 |
| commit | 48188e1621bb6711e7d092bee48523b18cd80177 (patch) | |
| tree | 524459ab58f8740a23efa7b7b521833646c678ba /src/include/access/rmgr.h | |
| parent | 10c70b86023001dc6d9028737afc97850b86e58f (diff) | |
| download | postgresql-48188e1621bb6711e7d092bee48523b18cd80177.tar.gz | |
Fix recently-understood problems with handling of XID freezing, particularly
in PITR scenarios. We now WAL-log the replacement of old XIDs with
FrozenTransactionId, so that such replacement is guaranteed to propagate to
PITR slave databases. Also, rather than relying on hint-bit updates to be
preserved, pg_clog is not truncated until all instances of an XID are known to
have been replaced by FrozenTransactionId. Add new GUC variables and
pg_autovacuum columns to allow management of the freezing policy, so that
users can trade off the size of pg_clog against the amount of freezing work
done. Revise the already-existing code that forces autovacuum of tables
approaching the wraparound point to make it more bulletproof; also, revise the
autovacuum logic so that anti-wraparound vacuuming is done per-table rather
than per-database. initdb forced because of changes in pg_class, pg_database,
and pg_autovacuum catalogs. Heikki Linnakangas, Simon Riggs, and Tom Lane.
Diffstat (limited to 'src/include/access/rmgr.h')
| -rw-r--r-- | src/include/access/rmgr.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/include/access/rmgr.h b/src/include/access/rmgr.h index 471b0cfb76..7be2dfc9f6 100644 --- a/src/include/access/rmgr.h +++ b/src/include/access/rmgr.h @@ -3,7 +3,7 @@ * * Resource managers definition * - * $PostgreSQL: pgsql/src/include/access/rmgr.h,v 1.16 2006/05/02 11:28:55 teodor Exp $ + * $PostgreSQL: pgsql/src/include/access/rmgr.h,v 1.17 2006/11/05 22:42:10 tgl Exp $ */ #ifndef RMGR_H #define RMGR_H @@ -12,6 +12,9 @@ typedef uint8 RmgrId; /* * Built-in resource managers + * + * Note: RM_MAX_ID could be as much as 255 without breaking the XLOG file + * format, but we keep it small to minimize the size of RmgrTable[]. */ #define RM_XLOG_ID 0 #define RM_XACT_ID 1 @@ -20,6 +23,7 @@ typedef uint8 RmgrId; #define RM_DBASE_ID 4 #define RM_TBLSPC_ID 5 #define RM_MULTIXACT_ID 6 +#define RM_HEAP2_ID 9 #define RM_HEAP_ID 10 #define RM_BTREE_ID 11 #define RM_HASH_ID 12 |