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Noah Misch 2b3e4672f7 Don't ERROR on PreallocXlogFiles() race condition. 
Before a restartpoint finishes PreallocXlogFiles(), a startup process
KeepFileRestoredFromArchive() call can unlink the preallocated segment.
If a CHECKPOINT sql command had elicited the restartpoint experiencing
the race condition, that sql command failed.  Moreover, the restartpoint
omitted its log_checkpoints message and some inessential resource
reclamation.  Prevent the ERROR by skipping open() of the segment.
Since these consequences are so minor, no back-patch.

Discussion: https://postgr.es/m/20210202151416.GB3304930@rfd.leadboat.com
 		2021-06-28 18:34:56 -07:00
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backend Don't ERROR on PreallocXlogFiles() race condition. 2021-06-28 18:34:56 -07:00
bin Dump COMMENT ON SCHEMA public. 2021-06-28 18:34:55 -07:00
common Fix incautious handling of possibly-miscoded strings in client code. 2021-06-07 14:15:25 -04:00
fe_utils Fix incautious handling of possibly-miscoded strings in client code. 2021-06-07 14:15:25 -04:00
include Don't ERROR on PreallocXlogFiles() race condition. 2021-06-28 18:34:56 -07:00
interfaces Don't use abort(3) in libpq's fe-print.c. 2021-06-28 14:17:41 -04:00
makefiles Add NO_INSTALL option to pgxs 2021-05-27 13:58:29 +02:00
pl Restore the portal-level snapshot for simple expressions, too. 2021-06-22 17:48:39 -04:00
port Fix error handling in replacement pthread_barrier_init(). 2021-06-01 11:31:06 +12:00
template Further tweaking of PG_SYSROOT heuristics for macOS. 2021-01-20 12:07:23 -05:00
test Dump public schema ownership and security labels. 2021-06-28 18:34:55 -07:00
timezone Update time zone data files to tzdata release 2021a. 2021-01-24 16:29:47 -05:00
tools Doc: further updates for RELEASE_CHANGES process notes. 2021-06-28 18:05:46 -04:00
tutorial doc: Prefer explicit JOIN syntax over old implicit syntax in tutorial 2021-04-08 10:51:26 +02:00
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Makefile Remove the option to build thread_test.c outside configure. 2020-10-21 12:08:48 -04:00
Makefile.global.in Update Unicode data to CLDR 39 2021-04-08 08:28:03 +02:00
Makefile.shlib Add PostgreSQL home page to --help output 2020-02-28 13:12:21 +01:00
nls-global.mk Add errhint_plural() function and make use of it 2021-03-31 09:16:25 +02:00