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Michael Paquier a57399d70c Fix race in TAP test 002_archiving.pl when restoring history file 
This test, introduced in df86e52, uses a second standby to check that
it is able to remove correctly RECOVERYHISTORY and RECOVERYXLOG at the
end of recovery.  This standby uses the archives of the primary to
restore its contents, with some of the archive's contents coming from
the first standby previously promoted.  In slow environments, it was
possible that the test did not check what it should, as the history file
generated by the promotion of the first standby may not be stored yet on
the archives the second standby feeds on.  So, it could be possible that
the second standby selects an incorrect timeline, without restoring a
history file at all.

This commits adds a wait phase to make sure that the history file
required by the second standby is archived before this cluster is
created.  This relies on poll_query_until() with pg_stat_file() and an
absolute path, something not supported in REL_10_STABLE.

While on it, this adds a new test to check that the history file has
been restored by looking at the logs of the second standby.  This
ensures that a RECOVERYHISTORY, whose removal needs to be checked,
is created in the first place.  This should make the test more robust.

This test has been introduced by df86e52, but it came in light as an
effect of the bug fixed by acf1dd42, where the extra restore_command
calls made the test much slower.

Reported-by: Andres Freund
Discussion: https://postgr.es/m/YlT23IvsXkGuLzFi@paquier.xyz
Backpatch-through: 11
2022-04-18 11:40:22 +09:00
config Suppress warning about stack_base_ptr with late-model GCC. 2022-02-17 22:45:34 -05:00
contrib pageinspect: Fix handling of all-zero pages 2022-04-14 15:09:39 +09:00
doc Doc: tweak textsearch.sgml for SEO purposes. 2022-04-12 18:21:26 -04:00
src Fix race in TAP test 002_archiving.pl when restoring history file 2022-04-18 11:40:22 +09:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.gitattributes Add XSL stylesheet to fix up SVG files 2019-06-19 21:26:42 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure configure: check for dlsym instead of dlopen. 2022-03-23 12:43:38 -07:00
configure.in configure: check for dlsym instead of dlopen. 2022-03-23 12:43:38 -07:00
COPYRIGHT Update copyright for 2022 2022-01-07 19:04:56 -05:00
GNUmakefile.in Add new make targets world-bin and install-world-bin 2021-07-01 14:51:54 -04:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.