Tom Lane 48188e1621 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relying on hint-bit updates to be preserved, pg_clog is not truncated until all instances of an XID are known to have been replaced by FrozenTransactionId.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.		2006-11-05 22:42:10 +00:00
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common	pgindent run for 8.2.	2006-10-04 00:30:14 +00:00
gin	Message style improvements	2006-10-06 17:14:01 +00:00
gist	pgindent run for 8.2.	2006-10-04 00:30:14 +00:00
hash	pgindent run for 8.2.	2006-10-04 00:30:14 +00:00
heap	Fix recently-understood problems with handling of XID freezing, particularly	2006-11-05 22:42:10 +00:00
index	pgindent run for 8.2.	2006-10-04 00:30:14 +00:00
nbtree	Fix "failed to re-find parent key" btree VACUUM failure by revising page	2006-11-01 19:43:17 +00:00
transam	Fix recently-understood problems with handling of XID freezing, particularly	2006-11-05 22:42:10 +00:00
Makefile	GIN: Generalized Inverted iNdex.	2006-05-02 11:28:56 +00:00