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Andres Freund e6799d5a53 Move page initialization from RelationAddExtraBlocks() to use. ... Previously we initialized pages when bulk extending in RelationAddExtraBlocks(). That has a major disadvantage: It ties RelationAddExtraBlocks() to heap, as other types of storage are likely to need different amounts of special space, have different amount of free space (previously determined by PageGetHeapFreeSpace()). That we're relying on initializing pages, but not WAL logging the initialization, also means the risk for getting "WARNING: relation \"%s\" page %u is uninitialized --- fixing" style warnings in vacuums after crashes/immediate shutdowns, is considerably higher. The warning sounds much more serious than what they are. Fix those two issues together by not initializing pages in RelationAddExtraPages() (but continue to do so in RelationGetBufferForTuple(), which is linked much more closely to heap), and accepting uninitialized pages as normal in vacuumlazy.c. When vacuumlazy encounters an empty page it now adds it to the FSM, but does nothing else. We chose to not issue a debug message, much less a warning in that case - it seems rarely useful, and quite likely to scare people unnecessarily. For now empty pages aren't added to the VM, because standbys would not re-discover such pages after a promotion. In contrast to other sources for empty pages, there's no corresponding WAL records triggering FSM updates during replay. Author: Andres Freund Reviewed-By: Tom Lane Discussion: https://postgr.es/m/20181219083945.6khtgm36mivonhva@alap3.anarazel.de		7 years ago
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backend	Move page initialization from RelationAddExtraBlocks() to use.	7 years ago
bin	psql: Remove unused tab completion query	7 years ago
common	Use perfect hashing, instead of binary search, for keyword lookup.	7 years ago
fe_utils	pgbench: add \cset and \gset commands	7 years ago
include	Revert "Avoid creation of the free space map for small heap relations."	7 years ago
interfaces	Remove _configthreadlocale() calls in ecpg test suite.	7 years ago
makefiles	Ensure link commands list *.o files before LDFLAGS.	7 years ago
pl	Change function call information to be variable length.	7 years ago
port	Use our own getopt() on OpenBSD.	7 years ago
template	Yet further rethinking of build changes for macOS Mojave.	7 years ago
test	Revert "Avoid creation of the free space map for small heap relations."	7 years ago
timezone	Replace @postgresql.org with @lists.postgresql.org for mailinglists	7 years ago
tools	Change function call information to be variable length.	7 years ago
tutorial	SQL comment: remove extra word in heading comment	7 years ago
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DEVELOPERS	…
Makefile	Fix partial-build problems introduced by having more generated headers.	8 years ago
Makefile.global.in	fix typo	7 years ago
Makefile.shlib	Ensure static libraries have correct mod time even if ranlib messes it up.	7 years ago
nls-global.mk	Replace @postgresql.org with @lists.postgresql.org for mailinglists	7 years ago