Heikki Linnakangas 82b43f7df2 Don't update relfrozenxid if any pages were skipped. ... Vacuum recognizes that it can update relfrozenxid by checking whether it has processed all pages of a relation. Unfortunately it performed that check after truncating the dead pages at the end of the relation, and used the new number of pages to decide whether all pages have been scanned. If the new number of pages happened to be smaller or equal to the number of pages scanned, it incorrectly decided that all pages were scanned. This can lead to relfrozenxid being updated, even though some pages were skipped that still contain old XIDs. That can lead to data loss due to xid wraparounds with some rows suddenly missing. This likely has escaped notice so far because it takes a large number (~2^31) of xids being used to see the effect, while a full-table vacuum before that would fix the issue. The incorrect logic was introduced by commit b4b6923e03. Backpatch this fix down to 8.4, like that commit. Andres Freund, with some modifications by me.		2013-11-27 13:43:27 +02:00
..
backend	Don't update relfrozenxid if any pages were skipped.	2013-11-27 13:43:27 +02:00
bin	Add --xlogdir option to pg_basebackup, for specifying the pg_xlog directory.	2013-11-27 14:00:16 +09:00
common	Use improved vsnprintf calling logic in more places.	2013-10-24 21:43:57 -04:00
include	Implement information_schema.parameters.parameter_default column	2013-11-26 23:21:35 -05:00
interfaces	ECPG: Fix searching for quoted cursor names case-sensitively.	2013-11-27 11:02:13 +01:00
makefiles	Remove leftovers of IRIX port	2013-11-12 06:39:36 -05:00
pl	Oops, forgot to "git add" last minute changes to regression test.	2013-11-26 23:05:48 +02:00
port	Ensure _dosmaperr() actually sets errno correctly.	2013-11-23 18:24:26 -05:00
template	Remove leftovers of IRIX port	2013-11-12 06:39:36 -05:00
test	Implement information_schema.parameters.parameter_default column	2013-11-26 23:21:35 -05:00
timezone	Fix whitespace issues found by git diff --check, add gitattributes	2013-11-10 14:48:29 -05:00
tools	Fix whitespace	2013-11-13 21:25:52 -05:00
tutorial	Modernize string literal syntax in tutorial example.	2013-01-19 17:20:32 -05:00
.gitignore
bcc32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00
DEVELOPERS
Makefile	Create libpgcommon, and move pg_malloc et al to it	2013-02-12 11:21:05 -03:00
Makefile.global.in	Switch dependency order of libpgcommon and libpgport	2013-10-17 22:02:35 -04:00
Makefile.shlib	Remove IRIX port.	2013-10-18 08:14:21 -04:00
nls-global.mk	Remove maintainer-check target, fold into normal build	2013-10-10 20:11:56 -04:00
win32.mak