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Jeff Davis 92c58fd948 Rework HashAgg GUCs. 
Eliminate enable_groupingsets_hash_disk, which was primarily useful
for testing grouping sets that use HashAgg and spill. Instead, hack
the table stats to convince the planner to choose hashed aggregation
for grouping sets that will spill to disk. Suggested by Melanie
Plageman.

Rename enable_hashagg_disk to hashagg_avoid_disk_plan, and invert the
meaning of on/off. The new name indicates more strongly that it only
affects the planner. Also, the word "avoid" is less definite, which
should avoid surprises when HashAgg still needs to use the
disk. Change suggested by Justin Pryzby, though I chose a different
GUC name.

Discussion: https://postgr.es/m/CAAKRu_aisiENMsPM2gC4oUY1hHG3yrCwY-fXUg22C6_MJUwQdA%40mail.gmail.com
Discussion: https://postgr.es/m/20200610021544.GA14879@telsasoft.com
Backpatch-through: 13
2020-06-11 12:57:43 -07:00
..
access Fix crash in WAL sender when starting physical replication 2020-06-08 10:12:24 +09:00
bootstrap Update copyrights for 2020 2020-01-01 12:21:45 -05:00
catalog Unify drop-by-OID functions 2020-06-09 09:39:46 +02:00
commands Unify drop-by-OID functions 2020-06-09 09:39:46 +02:00
common Move frontend-side archive APIs from src/common/ to src/fe_utils/ 2020-06-11 15:48:46 +09:00
datatype Update copyrights for 2020 2020-01-01 12:21:45 -05:00
executor Initial pgindent and pgperltidy run for v13. 2020-05-14 13:06:50 -04:00
fe_utils Move frontend-side archive APIs from src/common/ to src/fe_utils/ 2020-06-11 15:48:46 +09:00
foreign Update copyrights for 2020 2020-01-01 12:21:45 -05:00
jit jit: Reference expression step functions via llvmjit_types. 2020-02-06 22:29:14 -08:00
lib Initial pgindent and pgperltidy run for v13. 2020-05-14 13:06:50 -04:00
libpq Initial pgindent and pgperltidy run for v13. 2020-05-14 13:06:50 -04:00
mb Allow Unicode escapes in any server encoding, not only UTF-8. 2020-03-06 14:17:43 -05:00
nodes Initial pgindent and pgperltidy run for v13. 2020-05-14 13:06:50 -04:00
optimizer Rework HashAgg GUCs. 2020-06-11 12:57:43 -07:00
parser Revert 0f5ca02f53 2020-04-08 11:37:27 +03:00
partitioning Allow partitionwise joins in more cases. 2020-04-08 10:25:00 +09:00
port Avoid need for valgrind suppressions for pg_atomic_init_u64 on some platforms. 2020-06-08 19:52:19 -07:00
portability Update copyrights for 2020 2020-01-01 12:21:45 -05:00
postmaster Trigger autovacuum based on number of INSERTs 2020-03-28 19:20:12 +13:00
regex Assume that we have <wchar.h>. 2020-02-21 14:30:47 -05:00
replication Spelling adjustments 2020-06-07 15:06:51 +02:00
rewrite Update copyrights for 2020 2020-01-01 12:21:45 -05:00
snowball Update snowball 2020-06-08 08:07:15 +02:00
statistics Initial pgindent and pgperltidy run for v13. 2020-05-14 13:06:50 -04:00
storage Spelling adjustments 2020-06-07 15:06:51 +02:00
tcop Allow the planner-related functions and hook to accept the query string. 2020-03-30 13:51:05 +09:00
tsearch Assume that we have <wchar.h>. 2020-02-21 14:30:47 -05:00
utils Unify drop-by-OID functions 2020-06-09 09:39:46 +02:00
.gitignore Refactor dlopen() support 2018-09-06 11:33:04 +02:00
c.h Enable Unix-domain sockets support on Windows 2020-03-28 15:01:01 +01:00
fmgr.h Fix minor violations of FunctionCallInvoke usage protocol. 2020-04-21 14:23:53 -04:00
funcapi.h Avoid holding a directory FD open across assorted SRF calls. 2020-03-16 21:05:52 -04:00
getaddrinfo.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
getopt_long.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
Makefile Get rid of jsonpath_gram.h and jsonpath_scanner.h 2019-03-20 11:13:34 +03:00
miscadmin.h Add unlikely() to CHECK_FOR_INTERRUPTS() 2020-06-05 16:49:25 -04:00
pg_config.h.in Enable Unix-domain sockets support on Windows 2020-03-28 15:01:01 +01:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_manual.h Remove ACLDEBUG #define and associated code. 2020-04-23 15:38:04 -04:00
pg_getopt.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
pg_trace.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
pgstat.h Mop-up for wait event naming issues. 2020-05-16 21:00:11 -04:00
pgtar.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
pgtime.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
port.h Initial pgindent and pgperltidy run for v13. 2020-05-14 13:06:50 -04:00
postgres.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
postgres_ext.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
postgres_fe.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
rusagestub.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
windowapi.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00