Andres Freund fc02e6724f Fix race condition between relation extension and vacuum. ... In e6799d5a53 I removed vacuumlazy.c trickery around re-checking whether a page is actually empty after acquiring an extension lock on the relation, because the page is not PageInit()ed anymore, and entries in the FSM ought not to lead to user-visible errors. As reported by various buildfarm animals that is not correct, given the way to code currently stands: If vacuum processes a page that's just been newly added by either RelationGetBufferForTuple() or RelationAddExtraBlocks(), it could add that page to the FSM and it could be reused by other backends, before those two functions check whether the newly added page is actually new. That's a relatively narrow race, but several buildfarm machines appear to be able to hit it. While it seems wrong that the FSM, given it's lack of durability and approximative nature, can trigger errors like this, that seems better fixed in a separate commit. Especially given that a good portion of the buildfarm is red, and this is just re-introducing logic that existed a few hours ago. Author: Andres Freund Discussion: https://postgr.es/m/20190128222259.zhi7ovzgtkft6em6@alap3.anarazel.de		2019-01-28 15:44:12 -08:00
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backend	Fix race condition between relation extension and vacuum.	2019-01-28 15:44:12 -08:00
bin	psql: Remove unused tab completion query	2019-01-28 22:02:45 +01:00
common	Use perfect hashing, instead of binary search, for keyword lookup.	2019-01-09 19:47:46 -05:00
fe_utils	pgbench: add \cset and \gset commands	2019-01-10 13:42:20 -03:00
include	In the planner, replace an empty FROM clause with a dummy RTE.	2019-01-28 17:54:23 -05:00
interfaces	Remove _configthreadlocale() calls in ecpg test suite.	2019-01-24 17:02:09 -05:00
makefiles	Ensure link commands list *.o files before LDFLAGS.	2019-01-02 13:57:54 -05:00
pl	Change function call information to be variable length.	2019-01-26 14:17:52 -08:00
port	Use our own getopt() on OpenBSD.	2019-01-18 15:06:26 -05:00
template	Yet further rethinking of build changes for macOS Mojave.	2018-11-02 18:54:00 -04:00
test	In the planner, replace an empty FROM clause with a dummy RTE.	2019-01-28 17:54:23 -05:00
timezone	Replace @postgresql.org with @lists.postgresql.org for mailinglists	2019-01-19 19:06:35 +01:00
tools	Change function call information to be variable length.	2019-01-26 14:17:52 -08:00
tutorial	SQL comment: remove extra word in heading comment	2019-01-25 18:57:21 -05:00
.gitignore
DEVELOPERS
Makefile	Fix partial-build problems introduced by having more generated headers.	2018-04-09 16:42:10 -04:00
Makefile.global.in	fix typo	2019-01-13 16:43:14 -05:00
Makefile.shlib	Ensure static libraries have correct mod time even if ranlib messes it up.	2018-11-29 15:53:44 -05:00
nls-global.mk	Replace @postgresql.org with @lists.postgresql.org for mailinglists	2019-01-19 19:06:35 +01:00