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Heikki Linnakangas e2999abcd1 Fix assertion failure in logical decoding. 
Logical decoding set SnapshotData's regd_count field to avoid the
snapshot manager from prematurely freeing snapshots that are generated
by the decoding system. That was always an abuse of the field, as it was
never supposed to be used outside the snapshot manager. Commit 94028691
made snapshot manager's tracking of the snapshots smarter, and that scheme
fell apart. The snapshot manager got confused and hit the assertion, when
a snapshot that was marked with regd_count==1 was not found in the heap,
where the snapshot manager tracks registered the snapshots.

To fix, don't abuse the regd_count field like that. Logical decoding still
abuses the active_count field for similar purposes, but that's currently
harmless.

The assertion failure was first reported by Michael Paquier
2015-04-16 21:50:07 +03:00
config Optimize pg_comp_crc32c_sse42 routine slightly, and also use it on x86. 2015-04-14 23:58:16 +03:00
contrib Move pg_upgrade from contrib/ to src/bin/ 2015-04-14 19:26:38 -04:00
doc Move pg_upgrade from contrib/ to src/bin/ 2015-04-14 19:26:38 -04:00
src Fix assertion failure in logical decoding. 2015-04-16 21:50:07 +03:00
.dir-locals.el emacs: Set indent-tabs-mode in perl-mode 2015-04-12 23:53:23 -04:00
.gitattributes Add functions for dealing with PGP armor header lines to pgcrypto. 2014-10-01 16:03:39 +03:00
.gitignore Ignore leftover artifacts from ecpg testsuite runs on Windows. 2015-03-09 18:48:44 +01:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Optimize pg_comp_crc32c_sse42 routine slightly, and also use it on x86. 2015-04-14 23:58:16 +03:00
configure.in Try to fix the CRC-32C autoconf magic for icc compiler. 2015-04-14 19:57:19 +03:00
COPYRIGHT Update copyright for 2015 2015-01-06 11:43:47 -05:00
GNUmakefile.in Add TAP tests for client programs 2014-04-14 21:33:46 -04:00
HISTORY Improve text of stub HISTORY file. 2014-02-12 18:16:17 -05:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00
README.git Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -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:

	http://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
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.