pgsql-server/contrib/pg_autovacuum Tag: REL7_4 ...

CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: momjian@svr1.postgresql.org 03/12/01 19:19:55

Modified files:
contrib/pg_autovacuum: Tag: REL7_4_STABLE pg_autovacuum.c
pg_autovacuum.h

Log message:
I've run across a pretty serious problem with pg_autovacuum.
pg_autovacuum looses track of any table that's ever been truncated
(possibly other situations too). When i truncate a table it gets a
new relfilenode in pg_class. This is a problem because pg_autovacuum
assumes pg_class.relfilenode will join to pg_stats_all_tables.relid.
pg_stats_all_tables.relid is actallly the oid from pg_class, not the
relfilenode. These two values start out equal so pg_autovacuum works
initially, but it fails later on because of this incorrect assumption.

This patch fixes that problem. Applied to HEAD and 7.4.X.

Brian Hirt