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f66885bec0
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Alvaro Herrera f66885bec0
Allow special SKIP LOCKED condition in Assert() 
Under concurrency, it is possible for two sessions to be merrily locking
and releasing a tuple and marking it again as HEAP_XMAX_INVALID all the
while a third session attempts to lock it, miserably fails at it, and
then contemplates life, the universe and everything only to eventually
fail an assertion that said bit is not set.  Before SKIP LOCKED that was
indeed a reasonable expectation, but alas! commit df630b0dd5 falsified
it.

This bug is as old as time itself, and even older, if you think time
begins with the oldest supported branch.  Therefore, backpatch to all
supported branches.

Author: Simon Riggs <simon.riggs@enterprisedb.com>
Discussion: https://postgr.es/m/CANbhV-FeEwMnN8yuMyss7if1ZKjOKfjcgqB26n8pqu1e=q0ebg@mail.gmail.com
2022-01-04 13:01:05 -03:00
config Pacify perlcritic. 2021-11-22 15:57:31 -05:00
contrib Handle mixed returnable and non-returnable columns better in IOS. 2022-01-03 16:12:11 -05:00
doc Fix typo 2022-01-02 17:06:32 +01:00
src Allow special SKIP LOCKED condition in Assert() 2022-01-04 13:01:05 -03:00
.cirrus.yml ci: Add continuous integration for github repositories via cirrus-ci. 2021-12-30 19:02:44 -08:00
.dir-locals.el
.editorconfig
.git-blame-ignore-revs Add another old commit to git-blame-ignore-revs. 2021-11-03 17:34:19 -07:00
.gitattributes gitattributes: Add new entry to silence whitespace error 2021-06-05 07:57:31 +02:00
.gitignore
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure Check for STATUS_DELETE_PENDING on Windows. 2021-12-10 16:19:43 +13:00
configure.ac Check for STATUS_DELETE_PENDING on Windows. 2021-12-10 16:19:43 +13:00
COPYRIGHT
GNUmakefile.in add missing tag from commit b8c4261e5e 2021-07-01 15:47:46 -04:00
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README.git

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/.