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Michael Paquier 2adf303284 Fix timing-dependent failure in recovery test 004_timeline_switch 
The test introduced by 17b2d5ec75 verifies that a WAL receiver
survives across a timeline jump by searching the server logs for
termination messages.  However, it called restart() before the timeline
switch, which kills the WAL receiver and may log the exact message being
checked, hence failing the test.  As TAP tests reuse the same log file
across restarts, a rotate_logfile() is used before the restart so as the
log matching check is not impacted by log entries generated by a
previous shutdown.

Recent changes to file handle inheritance altered I/O timing enough to
make this fail consistently while testing another patch.

While on it, this adds an extra check based on a PID comparison.  This
test may lead to false positives as it could be possible that the WAL
receiver has processed a timeline jump before the initial PID is
grabbed, but it should be good enough in most cases.

Like 17b2d5ec75, backpatch down to v13.

Author: Bryan Green <dbryan.green@gmail.com>
Co-authored-by: Xuneng Zhou <xunengzhou@gmail.com>
Discussion: https://postgr.es/m/9d00b597-d64a-4f1e-802e-90f9dc394c70@gmail.com
Backpatch-through: 13
2025-11-05 16:48:31 +09:00
config Don't put library-supplied -L/-I switches before user-supplied ones. 2025-07-29 15:17:41 -04:00
contrib Fix privilege checks for pg_prewarm() on indexes. 2025-10-17 11:36:50 -05:00
doc Doc: cover index CONCURRENTLY causing errors in INSERT ... ON CONFLICT. 2025-11-03 12:57:14 -08:00
src Fix timing-dependent failure in recovery test 004_timeline_switch 2025-11-05 16:48:31 +09:00
.abi-compliance-history Add .abi-compliance-history to back-branches. 2025-10-21 16:37:29 -05:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Add previous commit to .git-blame-ignore-revs. 2025-10-21 10:02:19 -05:00
.gitattributes Exclude LLVM files from whitespace checks 2024-11-27 11:10:42 +01:00
.gitignore Add portlock directory to .gitignore 2022-11-26 07:47:16 -05:00
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure Stamp 13.22. 2025-08-11 17:10:58 -04:00
configure.in Stamp 13.22. 2025-08-11 17:10:58 -04:00
COPYRIGHT Align organization wording in copyright statement 2025-05-16 11:20:07 -04:00
GNUmakefile.in Remove temporary portlock directory during make [dist]clean. 2022-11-26 10:30:58 -05:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00

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/.