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Michael Paquier 1dad5594c1 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 16:48:24 +09:00
config Don't put library-supplied -L/-I switches before user-supplied ones. 2025-07-29 15:17:41 -04:00
contrib Allow role created by new test to log in on Windows. 2025-10-18 18:36:21 -04:00
doc Doc: cover index CONCURRENTLY causing errors in INSERT ... ON CONFLICT. 2025-11-03 12:57:12 -08:00
src Fix timing-dependent failure in recovery test 004_timeline_switch 2025-11-05 16:48:24 +09:00
.abi-compliance-history Add commit 24f6c1bd4 to v17 .abi-compliance-history. 2025-10-22 11:13:00 -04:00
.cirrus.star ci: Simplify ci-os-only handling 2025-08-14 12:02:42 -04:00
.cirrus.tasks.yml ci: debian: Switch to Debian Trixie release 2025-11-04 13:25:39 -05:00
.cirrus.yml ci: Per-repo configuration for manually trigger tasks 2025-08-14 11:33:47 -04:00
.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 Fix git whitespace warning 2025-08-15 10:32:07 +02:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Stamp 17.6. 2025-08-11 17:04:51 -04:00
configure.ac Stamp 17.6. 2025-08-11 17:04:51 -04:00
COPYRIGHT Align organization wording in copyright statement 2025-05-16 11:20:07 -04:00
GNUmakefile.in Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Adapt REL_17_STABLE to its new status as a stable branch 2024-07-01 08:05:35 +09:00
meson.build Fix meson build with -Duuid=ossp when using version older than 0.60 2025-09-22 08:03:28 +09:00
meson_options.txt Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
README.md Adapt REL_17_STABLE to its new status as a stable branch 2024-07-01 08:05:35 +09:00

README.md

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.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/installation.html.

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