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Heikki Linnakangas 25624c5d3f WAL-log the creation of the init fork of unlogged indexes. 
We create a file, so we better WAL-log it. In practice, all the
built-in index AMs and all extensions that I'm aware of write a
metapage to the init fork, which is WAL-logged, and replay of the
metapage implicitly creates the fork too. But if ambuildempty() didn't
write any page, we would miss it.

This can be seen with dummy_index_am. Set up replication, create a
'dummy_index_am' index on an unlogged table, and look at the files
created in the replica: the init fork is not created on the
replica. Dummy_index_am doesn't do anything with the relation files,
however, so it doesn't lead to any user-visible errors.

Backpatch to all supported versions.

Reviewed-by: Robert Haas
Discussion: https://www.postgresql.org/message-id/6e5bbc08-cdfc-b2b3-9e23-1a914b9850a9%40iki.fi
 		2023-07-06 17:29:12 +03:00
config Use --strip-unneeded when stripping static libraries with GNU strip. 2023-04-20 18:12:48 -04:00
contrib Remove expensive test of postgres_fdw batch inserts 2023-07-03 18:38:12 +02:00
doc doc: rename "decades" to be more generic 2023-06-23 22:50:55 -04:00
src WAL-log the creation of the init fork of unlogged indexes. 2023-07-06 17:29:12 +03:00
.cirrus.yml ci: Use windows VMs instead of windows containers 2023-02-02 21:31:48 -08:00
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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/.