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Heikki Linnakangas d212957254 Fix bug in bulk extending temp relation after failure 
A ResourceOwnerEnlarge() call was missing. That led to an error:

ERROR:  ResourceOwnerRemember called but array was full

and an assertion failure, if you tried to extend a temp relation again
after a failure. Alexander's test case used running out of disk space
to trigger the original failure.

This bug was introduced in the large ResourceOwner rewrite commit
b8bff07daa. Before that, the UnpinLocalBuffer() call guaranteed that
the subsequent PinLocalBuffer() will succeed, but after the rewrite,
releasing an old resource doesn't guarantee that there is space for a
new one.

Add a comment explaining why the UnpinBuffer + PinBuffer calls in
BufferAlloc(), with no ResourceOwnerEnlarge() in between, are safe.

Reported-by: Alexander Lakhin
Discussion: https://www.postgresql.org/message-id/dc574fea-c83e-a600-08cd-10881762e4fa@gmail.com
2024-02-02 21:12:30 +02:00
config jit: Require at least LLVM 10. 2024-01-25 15:42:34 +13:00
contrib pgcrypto: Fix check for buffer size 2024-01-30 11:15:46 +01:00
doc doc: improve role option documentation 2024-02-01 06:11:53 -05:00
src Fix bug in bulk extending temp relation after failure 2024-02-02 21:12:30 +02:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml ci: Enable injection points in builds 2024-01-23 12:01:18 +09:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:28 -07:00
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aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure jit: Require at least LLVM 10. 2024-01-25 15:42:34 +13:00
configure.ac Add backend support for injection points 2024-01-22 10:15:50 +09:00
COPYRIGHT Update copyright for 2024 2024-01-03 20:49:05 -05:00
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meson_options.txt Add backend support for injection points 2024-01-22 10:15:50 +09:00
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README Stop generating plain-text INSTALL instructions. 2023-12-22 13:32:15 -05:00

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.

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/.