Alvaro Herrera 6d2a9ae0ed Fix deadlock hazard in CREATE INDEX CONCURRENTLY ... Multiple sessions doing CREATE INDEX CONCURRENTLY simultaneously are supposed to be able to work in parallel, as evidenced by fixes in commit c3d09b3bd2 specifically to support this case. In reality, one of the sessions would be aborted by a misterious "deadlock detected" error. Jeff Janes diagnosed that this is because of leftover snapshots used for system catalog scans -- this was broken by 8aa3e47510 keeping track of (registering) the catalog snapshot. To fix the deadlocks, it's enough to de-register that snapshot prior to waiting. Backpatch to 9.4, which introduced MVCC catalog scans. Include an isolationtester spec that 8 out of 10 times reproduces the deadlock with the unpatched code for me (Álvaro). Author: Jeff Janes Diagnosed-by: Jeff Janes Reported-by: Jeremy Finzel Discussion: https://postgr.es/m/CAMa1XUhHjCv8Qkx0WOr1Mpm_R4qxN26EibwCrj0Oor2YBUFUTg%40mail.gmail.com		2018-01-02 19:16:16 -03:00
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backend	Fix deadlock hazard in CREATE INDEX CONCURRENTLY	2018-01-02 19:16:16 -03:00
bin	Fix bogus logic for checking data dirs' versions within pg_upgrade.	2017-11-16 11:16:53 -05:00
common	Update copyright in recently added files	2017-07-26 18:17:18 -04:00
fe_utils	Phase 3 of pgindent updates.	2017-06-21 15:35:54 -04:00
include	Perform a lot more sanity checks when freezing tuples.	2017-12-14 18:20:48 -08:00
interfaces	Add post-2010 ecpg tests to checktcp.	2017-11-11 14:35:36 -08:00
makefiles	Always use -fPIC, not -fpic, when building shared libraries with gcc.	2017-06-01 13:32:55 -04:00
pl	Support linking with MinGW-built Perl.	2017-11-23 20:22:24 -08:00
port	Stamp 10.1.	2017-11-06 17:06:17 -05:00
template	Remove "sco" and "unixware" ports.	2016-10-11 11:26:04 -04:00
test	Fix deadlock hazard in CREATE INDEX CONCURRENTLY	2018-01-02 19:16:16 -03:00
timezone	Replace raw timezone source data with IANA's new compact format.	2017-11-25 15:30:27 -05:00
tools	MSVC 2012+: Permit linking to 32-bit, MinGW-built libraries.	2017-12-09 00:58:58 -08:00
tutorial	Phase 2 of pgindent updates.	2017-06-21 15:19:25 -04:00
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
DEVELOPERS	Replace a couple of references to files that no longer exist in the source	2009-05-04 08:08:47 +00:00
Makefile	Build src/test/isolation during "make" and "make install".	2017-11-22 20:18:52 -08:00
Makefile.global.in	Be more thorough about cleaning out gcov litter.	2017-08-11 17:39:27 -04:00
Makefile.shlib	Remove support for bcc and msvc standalone libpq builds	2017-04-11 15:22:21 +02:00
nls-global.mk	nls-global.mk: search build dir for source files, too	2016-06-07 18:55:18 -04:00