rdelaage/postgresql
1
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2024-08-23 12:00:41 +02:00
Code Issues Packages Projects Releases Wiki Activity
54,882 Commits 36 Branches 606 Tags 423 MiB
C 86%
PLpgSQL 5.5%
Perl 4.1%
Yacc 1.3%
Makefile 0.7%
Other 2.3%
0e758ae89a
Go to file
Tom Lane 0e758ae89a Fix failure to remove non-first segments of temporary tables. 
Commit 4ab5dae94 broke mdunlinkfork's logic for removing additional
segments of a multi-gigabyte table, because it neglected to advance
"segno" after unlinking the first segment, in the code path where it
chooses to unlink that one immediately.  Then the main remove loop
gets ENOENT at segment zero and figures it's done, so we never remove
whatever additional segments might exist.

The main problem here is with large temporary tables, but WAL replay
of a drop of a large regular table would also fail to remove extra
segments.  The third case where this path is taken is for non-main
forks; but I doubt it matters for those since they probably never
exceed 1GB.

The simplest fix is just to increment segno after that unlink().
(Probably this logic could do with a more thorough rethink, but not
with mere hours to go before 15.1 wraps.)

While here, also fix an incautious assumption that
register_forget_request cannot change errno.  I don't think that
that has any really bad consequences, as we'd end up trying to unlink
the zero'th segment either way, but it greatly complicates reasoning
about what could happen here.  Also make a couple of other cosmetic
fixes.

Per bug #17679 from Balazs Szilfai.  Back-patch into v15, as the
faulty patch was.

Discussion: https://postgr.es/m/17679-1095d04450cf6a6e@postgresql.org
2022-11-07 11:36:45 -05:00
config meson: Add initial version of meson based build system 2022-09-21 22:37:17 -07:00
contrib pg_stat_statements: fetch stmt location/length before it disappears. 2022-11-01 12:48:01 -04:00
doc Doc: Improve the description of confirmed_flush_lsn in pg_replication_slots. 2022-11-04 09:00:46 +05:30
src Fix failure to remove non-first segments of temporary tables. 2022-11-07 11:36:45 -05:00
.cirrus.yml meson: Add support for building with precompiled headers 2022-10-06 17:19:30 -07:00
.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 b2e6e7682 to .git-blame-ignore-revs 2022-09-08 14:06:59 +07:00
.gitattributes Remove trailing whitespace from *.sgml files. 2022-04-20 11:04:49 -04:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure Make finding openssl program a configure or meson option 2022-10-20 21:05:42 +02:00
configure.ac Make finding openssl program a configure or meson option 2022-10-20 21:05:42 +02:00
COPYRIGHT Update copyright for 2022 2022-01-07 19:04:57 -05:00
GNUmakefile.in Run tests of libpq on installcheck-world, checkprep and check-world 2022-06-03 13:15:20 +09:00
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
meson_options.txt Make finding openssl program a configure or meson option 2022-10-20 21:05:42 +02:00
meson.build meson: Mark PROVE as not required 2022-11-04 18:08:05 -07:00
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/.