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pgsql/ oc/src/sgml/backup.sgml oc/src/sgml/wal ...

From: Tom Lane <tgl(at)hub(dot)org>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql/ oc/src/sgml/backup.sgml oc/src/sgml/wal ...
Date: 2001-08-25 18:52:43
Message-ID: 200108251852.f7PIqhS18938@hub.org (view raw or flat)
Thread:
Lists: pgsql-committers
CVSROOT:	/home/projects/pgsql/cvsroot
Module name:	pgsql
Changes by:	tgl(at)hub(dot)org	01/08/25 14:52:43

Modified files:
	doc/src/sgml   : backup.sgml wal.sgml 
	src/backend/access/transam: Makefile rmgr.c transam.c varsup.c 
	                            xact.c xlog.c xlogutils.c 
	src/backend/catalog: Makefile heap.c 
	src/backend/parser: gram.y 
	src/backend/storage/buffer: README 
	src/backend/storage/ipc: ipci.c sinval.c 
	src/backend/storage/lmgr: lmgr.c 
	src/backend/utils/cache: relcache.c 
	src/backend/utils/init: globals.c postinit.c 
	src/backend/utils/misc: database.c 
	src/backend/utils/time: tqual.c 
	src/bin/initdb : initdb.sh 
	src/bin/pg_dump: pg_upgrade 
	src/include/access: rmgr.h transam.h xact.h xlog.h xlogdefs.h 
	                    xlogutils.h 
	src/include/catalog: catname.h catversion.h pg_attribute.h 
	                     pg_class.h pg_type.h 
	src/include/storage: bufpage.h 
Added files:
	src/backend/access/transam: clog.c 
	src/include/access: clog.h 
Removed files:
	src/backend/access/transam: transsup.c 
	src/include/catalog: pg_log.h 

Log message:
	Replace implementation of pg_log as a relation accessed through the
	buffer manager with 'pg_clog', a specialized access method modeled
	on pg_xlog.  This simplifies startup (don't need to play games to
	open pg_log; among other things, OverrideTransactionSystem goes away),
	should improve performance a little, and opens the door to recycling
	commit log space by removing no-longer-needed segments of the commit
	log.  Actual recycling is not there yet, but I felt I should commit
	this part separately since it'd still be useful if we chose not to
	do transaction ID wraparound.


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