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Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch
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Fujii Masao b5d084c535 Fix background worker not restarting after crash-and-restart cycle. 
Previously, if a background worker crashed (e.g., due to a SIGKILL) and
the server restarted due to restart_after_crash being enabled,
the worker was not restarted as expected. Background workers without
the never-restart flag should automatically restart in this case.

This issue was introduced in commit 28a520c0b7, which failed to reset
the rw_pid field in the RegisteredBgWorker struct for the crashed worker.

This commit fixes the problem by resetting rw_pid for all eligible
background workers during the crash-and-restart cycle.

Back-patched to v18, where the bug was introduced.

Bug fix patches were proposed by Andrey Rudometov and ChangAo Chen,
but this commit uses a different approach.

Reported-by: Andrey Rudometov <unlimitedhikari@gmail.com>
Reported-by: ChangAo Chen <cca5507@qq.com>
Author: Andrey Rudometov <unlimitedhikari@gmail.com>
Author: ChangAo Chen <cca5507@qq.com>
Co-authored-by: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: ChangAo Chen <cca5507@qq.com>
Reviewed-by: Shveta Malik <shveta.malik@gmail.com>
Discussion: https://postgr.es/m/CAF6JsWiO=i24qYitWe6ns1sXqcL86rYxdyU+pNYk-WueKPSySg@mail.gmail.com
Discussion: https://postgr.es/m/tencent_E00A056B3953EE6440F0F40F80EC30427D09@qq.com
Backpatch-through: 18
2025-07-25 18:38:36 +09:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config oauth: Run Autoconf tests with correct compiler flags 2025-07-11 10:06:41 -07:00
contrib Remove translation marker from libpq-be-fe-helpers.h. 2025-07-22 22:08:36 +09:00
doc doc: Add missing index entries and fix title formatting in pg_buffercache docs. 2025-07-24 11:43:20 +09:00
src Fix background worker not restarting after crash-and-restart cycle. 2025-07-25 18:38:36 +09:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
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configure oauth: Run Autoconf tests with correct compiler flags 2025-07-11 10:06:41 -07:00
configure.ac aio: Combine io_uring memory mappings, if supported 2025-07-07 22:57:07 -04:00
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meson_options.txt Add support for basic NUMA awareness 2025-04-07 23:08:17 +02:00
meson.build aio: Combine io_uring memory mappings, if supported 2025-07-07 22:57:07 -04:00
README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00

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/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/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/.