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Andres Freund d18d4bca81 Improve bit perturbation in TupleHashTableHash. 
The changes in b81b5a96f4 did not fully
address the issue, because the bit-mixing of the IV into the final
hash-key didn't prevent clustering in the input-data survive in the
output data.

This didn't cause a lot of problems because of the additional growth
conditions added d4c62a6b62. But as we
want to rein those in due to explosive growth in some edges, this
needs to be fixed.

Author: Andres Freund
Discussion: https://postgr.es/m/20171127185700.1470.20362@wrigleys.postgresql.org
Backpatch: 10, where simplehash was introduced
2018-01-29 11:24:57 -08:00
..
backend Improve bit perturbation in TupleHashTableHash. 2018-01-29 11:24:57 -08:00
bin Make pg_dump's ACL, sec label, and comment entries reliably identifiable. 2018-01-22 12:06:18 -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 Backport: Add inline murmurhash32(uint32) function. 2018-01-29 11:24:57 -08:00
interfaces Fix wording of "hostaddrs" 2018-01-21 13:43:20 +01:00
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 Improve bit perturbation in TupleHashTableHash. 2018-01-29 11:24:57 -08:00
timezone Update time zone data files to tzdata release 2018c. 2018-01-27 16:42:36 -05:00
tools Fix use of config-specific libraries for Windows OpenSSL 2018-01-03 15:33:12 -05:00
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