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Tom Lane 16a1e1ea4f Prevent parallel index build in a standalone backend. 
This can't work if there's no postmaster, and indeed the code got an
assertion failure trying.  There should be a check on IsUnderPostmaster
gating the use of parallelism, as the planner has for ordinary
parallel queries.

Commit 40d964ec9 got this right, so follow its model of checking
IsUnderPostmaster at the same place where we check for
max_parallel_maintenance_workers == 0.  In general, new code
implementing parallel utility operations should do the same.

Report and patch by Yulin Pei, cosmetically adjusted by me.
Back-patch to v11 where this code came in.

Discussion: https://postgr.es/m/HK0PR01MB22747D839F77142D7E76A45DF4F50@HK0PR01MB2274.apcprd01.prod.exchangelabs.com
 		2020-11-30 14:38:00 -05:00
config Update config.guess and config.sub 2019-04-27 14:25:00 +02:00
contrib Remove leftover comments, left behind by removal of WITH OIDS. 2020-11-30 10:29:26 +02:00
doc Fix recently-introduced breakage in psql's \connect command. 2020-11-29 15:22:04 -05:00
src Prevent parallel index build in a standalone backend. 2020-11-30 14:38:00 -05:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.gitattributes Add XSL stylesheet to fix up SVG files 2019-06-19 21:26:42 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
COPYRIGHT Update copyrights for 2020 2020-01-01 12:21:45 -05:00
GNUmakefile.in Make install-tests target work with vpath builds 2020-05-31 18:35:08 -04:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
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
aclocal.m4 Fix configure's AC_CHECK_DECLS tests to work correctly with clang. 2018-11-19 12:01:47 -05:00
configure On macOS, use -isysroot in link steps as well as compile steps. 2020-11-20 00:58:26 -05:00
configure.in On macOS, use -isysroot in link steps as well as compile steps. 2020-11-20 00:58:26 -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/.