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Alvaro Herrera a4f06606a3 Fix autovacuum launcher attachment to its DSA 
The autovacuum launcher doesn't actually do anything with its DSA other
than creating it and attaching to it, but it's been observed that after
longjmp'ing to the standard error handling block (for example after
getting SIGINT) the autovacuum enters an infinite loop reporting that it
cannot attach to its DSA anymore (which is correct, because it's already
attached to it.)  Fix by only attempting to attach if not already
attached.

I introduced this bug together with BRIN autosummarization in
7526e10224.

Reported-by: Yugo Nagata.
Author: Thomas Munro.  I added the comment to go with it.
Discussion: https://postgr.es/m/20170621211538.0c9eae73.nagata@sraoss.co.jp
2017-06-22 13:50:26 -04:00
config Make configure check for IPC::Run when --enable-tap-tests is specified. 2017-06-15 15:56:12 -04:00
contrib postgres_fdw: Move function prototype to correct section. 2017-06-22 12:44:53 -04:00
doc Upgrade documentation connected with shared_preload_libraries et al. 2017-06-20 13:40:06 -04:00
src Fix autovacuum launcher attachment to its DSA 2017-06-22 13:50:26 -04:00
.dir-locals.el emacs: Set indent-tabs-mode in perl-mode 2015-04-12 23:53:23 -04:00
.gitattributes Remove contrib/tsearch2. 2017-02-13 11:06:11 -05:00
.gitignore Allow .so minor version numbers above 9 in .gitignore. 2016-08-15 17:35:35 -04:00
aclocal.m4 Make configure check for IPC::Run when --enable-tap-tests is specified. 2017-06-15 15:56:12 -04:00
configure Make configure check for IPC::Run when --enable-tap-tests is specified. 2017-06-15 15:56:12 -04:00
configure.in Make configure check for IPC::Run when --enable-tap-tests is specified. 2017-06-15 15:56:12 -04:00
COPYRIGHT Update copyright for 2017 2017-01-03 12:37:53 -05:00
GNUmakefile.in Have "make coverage" recurse into contrib as well 2016-09-05 18:44:36 -03:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00

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/.