Fujii Masao e6d8069522 Make DROP DATABASE command generate less WAL records. ... Previously DROP DATABASE generated as many XLOG_DBASE_DROP WAL records as the number of tablespaces that the database to drop uses. This caused the scans of shared_buffers as many times as the number of the tablespaces during recovery because WAL replay of one XLOG_DBASE_DROP record needs that full scan. This could make the recovery time longer especially when shared_buffers is large. This commit changes DROP DATABASE so that it generates only one XLOG_DBASE_DROP record, and registers the information of all the tablespaces into it. Then, WAL replay of XLOG_DBASE_DROP record needs full scan of shared_buffers only once, and which may improve the recovery performance. Author: Fujii Masao Reviewed-by: Kirk Jamison, Simon Riggs Discussion: https://postgr.es/m/CAHGQGwF8YwNH0ZaL+2wjZPkj+ji9UhC+Z4ScnG97WKtVY5L9iw@mail.gmail.com		2019-11-21 21:10:37 +09:00
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aggregatecmds.c	Implement OR REPLACE option for CREATE AGGREGATE.	2019-03-19 01:16:50 +00:00
alter.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
amcmds.c	Initial pgindent run for v12.	2019-05-22 12:55:34 -04:00
analyze.c	Allow setting statistics target for extended statistics	2019-09-11 00:25:51 +02:00
async.c	PG_FINALLY	2019-11-01 11:18:03 +01:00
cluster.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
collationcmds.c	Collations with nondeterministic comparison	2019-03-22 12:12:43 +01:00
comment.c	Remove superfluous tqual.h includes.	2019-01-21 12:15:02 -08:00
constraint.c	Initial pgindent run for v12.	2019-05-22 12:55:34 -04:00
conversioncmds.c	Remove dead encoding-conversion functions.	2019-07-05 14:17:27 -04:00
copy.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
createas.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
dbcommands.c	Make DROP DATABASE command generate less WAL records.	2019-11-21 21:10:37 +09:00
define.c	Fix inconsistencies and typos in the tree, take 9	2019-08-05 12:14:58 +09:00
discard.c	Update copyright for 2019	2019-01-02 12:44:25 -05:00
dropcmds.c	Phase 2 pgindent run for v12.	2019-05-22 13:04:48 -04:00
event_trigger.c	Have LookupFuncName accept NULL argtypes for 0 args	2019-11-12 17:06:58 -03:00
explain.c	Represent Lists as expansible arrays, not chains of cons-cells.	2019-07-15 13:41:58 -04:00
extension.c	PG_FINALLY	2019-11-01 11:18:03 +01:00
foreigncmds.c	Have LookupFuncName accept NULL argtypes for 0 args	2019-11-12 17:06:58 -03:00
functioncmds.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
indexcmds.c	Handle interrupts within a transaction context in REINDEX CONCURRENTLY	2019-10-25 10:20:08 +09:00
lockcmds.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
Makefile	Split all OBJS style lines in makefiles into one-line-per-entry style.	2019-11-05 14:41:07 -08:00
matview.c	tableam: Rename wrapper functions to match callback names.	2019-05-23 16:32:36 -07:00
opclasscmds.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
operatorcmds.c	Fix inconsistencies and typos in the tree	2019-07-29 12:28:30 +09:00
policy.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
portalcmds.c	Update copyright for 2019	2019-01-02 12:44:25 -05:00
prepare.c	Fix inconsistencies and typos in the tree, take 9	2019-08-05 12:14:58 +09:00
proclang.c	Have LookupFuncName accept NULL argtypes for 0 args	2019-11-12 17:06:58 -03:00
publicationcmds.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
schemacmds.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
seclabel.c	Represent Lists as expansible arrays, not chains of cons-cells.	2019-07-15 13:41:58 -04:00
sequence.c	Fix inconsistencies and typos in the tree, take 10	2019-08-13 13:53:41 +09:00
statscmds.c	Remove last traces of heap_open/close in the tree	2019-10-19 11:18:15 +09:00
subscriptioncmds.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
tablecmds.c	Split handling of reloptions for partitioned tables	2019-11-14 12:34:28 +09:00
tablespace.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
trigger.c	Fix silly initializations (cosmetic only).	2019-11-13 15:26:54 -05:00
tsearchcmds.c	Represent Lists as expansible arrays, not chains of cons-cells.	2019-07-15 13:41:58 -04:00
typecmds.c	Avoid using lcons and list_delete_first where it's easy to do so.	2019-07-17 11:15:34 -04:00
user.c	Add an enforcement mechanism for global object names in regression tests.	2019-06-29 11:34:00 -04:00
vacuum.c	PG_FINALLY	2019-11-01 11:18:03 +01:00
variable.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
view.c	Allow ALTER VIEW command to rename the column in the view.	2019-11-21 19:55:13 +09:00