Tom Lane 6f2aead1ff In XLogReadBufferExtended, don't assume P_NEW yields consecutive pages. ... In a database that's not yet reached consistency, it's possible that some segments of a relation are not full-size but are not the last ones either. Because of the way smgrnblocks() works, asking for a new page with P_NEW will fill in the last not-full-size segment --- and if that makes it full size, the apparent EOF of the relation will increase by more than one page, so that the next P_NEW request will yield a page past the next consecutive one. This breaks the relation-extension logic in XLogReadBufferExtended, possibly allowing a page update to be applied to some page far past where it was intended to go. This appears to be the explanation for reports of table bloat on replication slaves compared to their masters, and probably explains some corrupted-slave reports as well. Fix the loop to check the page number it actually got, rather than merely Assert()'ing that dead reckoning got it to the desired place. AFAICT, there are no other places that make assumptions about exactly which page they'll get from P_NEW. Problem identified by Greg Stark, though this is not the same as his proposed patch. It's been like this for a long time, so back-patch to all supported branches.		2014-02-12 14:52:16 -05:00
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common	Revert C comment change in slot_attisnull()	2014-01-28 12:28:14 -05:00
gin	Initialize the entryRes array between each call to triConsistent.	2014-02-07 18:53:31 +02:00
gist	Update copyright for 2014	2014-01-07 16:05:30 -05:00
hash	Allow use of "z" flag in our printf calls, and use it where appropriate.	2014-01-23 17:18:33 -05:00
heap	Allow use of "z" flag in our printf calls, and use it where appropriate.	2014-01-23 17:18:33 -05:00
index	Update copyright for 2014	2014-01-07 16:05:30 -05:00
nbtree	Remove unnecessary relcache flushes after changing btree metapages.	2014-02-05 13:43:46 -05:00
rmgrdesc	Compress GIN posting lists, for smaller index size.	2014-01-22 19:20:58 +02:00
spgist	Allow use of "z" flag in our printf calls, and use it where appropriate.	2014-01-23 17:18:33 -05:00
transam	In XLogReadBufferExtended, don't assume P_NEW yields consecutive pages.	2014-02-12 14:52:16 -05:00
Makefile	Split out rmgr rm_desc functions into their own files	2012-11-28 13:01:15 -03:00