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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-02-26 18:43:34 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-02-26 18:43:34 +0000 |
| commit | 0fc4ecf93543a0e293845bdc47712285a9165aa0 (patch) | |
| tree | c79e93a9d4e0a23120a1968091e69892fd1bc3ed /src/backend/commands/vacuum.c | |
| parent | ffef9a9de4f7d992ebfbf88e5e926bc5e022f420 (diff) | |
| download | postgresql-0fc4ecf93543a0e293845bdc47712285a9165aa0.tar.gz postgresql-0fc4ecf93543a0e293845bdc47712285a9165aa0.zip | |
Finish up the flat-files project: get rid of GetRawDatabaseInfo() hack
in favor of looking at the flat file copy of pg_database during backend
startup. This should finally eliminate the various corner cases in which
backend startup fails unexpectedly because it isn't able to distinguish
live and dead tuples in pg_database. Simplify locking on pg_database
to be similar to the rules used with pg_shadow and pg_group, and eliminate
FlushRelationBuffers operations that were used only to reduce the odds
of failure of GetRawDatabaseInfo.
initdb forced due to addition of a trigger to pg_database.
Diffstat (limited to 'src/backend/commands/vacuum.c')
| -rw-r--r-- | src/backend/commands/vacuum.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c index c818d8f9667..f4fbbae2ec8 100644 --- a/src/backend/commands/vacuum.c +++ b/src/backend/commands/vacuum.c @@ -13,7 +13,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.301 2005/02/20 02:21:34 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.302 2005/02/26 18:43:33 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -704,11 +704,12 @@ vac_update_relstats(Oid relid, BlockNumber num_pages, double num_tuples, * We violate no-overwrite semantics here by storing new values for the * statistics columns directly into the tuple that's already on the page. * As with vac_update_relstats, this avoids leaving dead tuples behind - * after a VACUUM; which is good since GetRawDatabaseInfo - * can get confused by finding dead tuples in pg_database. + * after a VACUUM. * * This routine is shared by full and lazy VACUUM. Note that it is only * applied after a database-wide VACUUM operation. + * + * Note that we don't bother to update the flat-file copy of pg_database. */ static void vac_update_dbstats(Oid dbid, |