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Thomas Munro 54e72b66ed Refactor rmtree() to use get_dirent_type().
Switch to get_dirent_type() instead of lstat() while traversing a
directory tree, to see if that fixes the intermittent ENOTEMPTY failures
seen in recent pg_upgrade tests, on Windows CI.  While refactoring, also
use AllocateDir() instead of opendir() in the backend, which knows how
to handle descriptor pressure.

Our CI system currently uses Windows Server 2019, a version known not to
have POSIX unlink semantics enabled by default yet, unlike typical
Windows 10 and 11 systems.  That might explain why we see this flapping
on CI but (apparently) not in the build farm, though the frequency is
quite low.

The theory is that some directory entry must be in state
STATUS_DELETE_PENDING, which lstat() would report as ENOENT, though
unfortunately we don't know exactly why yet.  With this change, rmtree()
will not skip them, and try to unlink (again).  Our unlink() wrapper
should either wait a short time for them to go away when some other
process closes the handle, or log a message to tell us the path of the
problem file if not, so we can dig further.

Discussion: https://postgr.es/m/20220919213217.ptqfdlcc5idk5xup%40awork3.anarazel.de
2023-01-31 13:46:25 +13:00
config autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
contrib Invent "join domains" to replace the below_outer_join hack. 2023-01-30 13:50:25 -05:00
doc Make Vars be outer-join-aware. 2023-01-30 13:16:20 -05:00
src Refactor rmtree() to use get_dirent_type(). 2023-01-31 13:46:25 +13:00
.cirrus.yml Fix typos in comments, code and documentation 2023-01-03 16:26:14 +09:00
.dir-locals.el
.editorconfig
.git-blame-ignore-revs Add 250c8ee07e to git-blame-ignore-revs 2023-01-13 15:33:49 -08:00
.gitattributes Remove trailing whitespace from *.sgml files. 2022-04-20 11:04:49 -04:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
COPYRIGHT Update copyright for 2023 2023-01-02 15:00:37 -05:00
GNUmakefile.in Remove temporary portlock directory during make [dist]clean. 2022-11-26 10:30:31 -05:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Dynamically find correct installation docs in Makefile. 2022-01-19 14:48:25 +01:00
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
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Update copyright for 2023 2023-01-02 15:00:37 -05:00
configure.ac Update copyright for 2023 2023-01-02 15:00:37 -05:00
meson.build meson: Fix installation path computation 2023-01-27 11:57:11 +01:00
meson_options.txt Update copyright for 2023 2023-01-02 15:00:37 -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.

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/.