postgresql/src/test
Alvaro Herrera 5a10c262fc
Fix replay of create database records on standby
Crash recovery on standby may encounter missing directories
when replaying database-creation WAL records.  Prior to this
patch, the standby would fail to recover in such a case;
however, the directories could be legitimately missing.
Consider the following sequence of commands:

    CREATE DATABASE
    DROP DATABASE
    DROP TABLESPACE

If, after replaying the last WAL record and removing the
tablespace directory, the standby crashes and has to replay the
create database record again, crash recovery must be able to continue.

A fix for this problem was already attempted in 49d9cfc68b, but it
was reverted because of design issues.  This new version is based
on Robert Haas' proposal: any missing tablespaces are created
during recovery before reaching consistency.  Tablespaces
are created as real directories, and should be deleted
by later replay.  CheckRecoveryConsistency ensures
they have disappeared.

The problems detected by this new code are reported as PANIC,
except when allow_in_place_tablespaces is set to ON, in which
case they are WARNING.  Apart from making tests possible, this
gives users an escape hatch in case things don't go as planned.

Author: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Author: Asim R Praveen <apraveen@pivotal.io>
Author: Paul Guo <paulguo@gmail.com>
Reviewed-by: Anastasia Lubennikova <lubennikovaav@gmail.com> (older versions)
Reviewed-by: Fujii Masao <masao.fujii@oss.nttdata.com> (older versions)
Reviewed-by: Michaël Paquier <michael@paquier.xyz>
Diagnosed-by: Paul Guo <paulguo@gmail.com>
Discussion: https://postgr.es/m/CAEET0ZGx9AvioViLf7nbR_8tH9-=27DN5xWJ2P9-ROH16e4JUA@mail.gmail.com
2022-07-28 08:26:05 +02:00
..
authentication Make new authentication test case more robust. 2020-09-04 21:01:59 -04:00
examples Client-side fixes for delayed NOTIFY receipt. 2018-10-19 22:22:57 -04:00
isolation Fix risk of deadlock failure while dropping a partitioned index. 2022-03-21 12:22:13 -04:00
kerberos Fix potential rare failure in the kerberos TAP tests 2021-04-07 19:59:41 +09:00
ldap Adapt src/test/ldap/t/001_auth.pl to work with openldap 2.5. 2021-10-19 11:15:45 -07:00
locale Add a temp-install prerequisite to "check"-like targets not having one. 2017-11-05 18:51:08 -08:00
mb Fix MB regression tests for WAL-logging of hash indexes. 2017-03-15 07:25:36 -04:00
modules Fix DDL deparse of CREATE OPERATOR CLASS 2022-05-20 18:52:55 +02:00
perl Fix PostgreSQL::Test aliasing for Perl v5.10.1. 2022-06-25 14:16:00 -07:00
recovery Fix replay of create database records on standby 2022-07-28 08:26:05 +02:00
regress Fix ruleutils issues with dropped cols in functions-returning-composite. 2022-07-21 13:56:02 -04:00
ssl Fix failures in SSL tests caused by out-of-tree keys and certificates 2022-03-22 13:21:54 +09:00
subscription Invalidate relcache when changing REPLICA IDENTITY index. 2021-11-16 09:25:04 +05:30
thread Update copyright for 2018 2018-01-02 23:30:12 -05:00
Makefile Revert "Allow on-line enabling and disabling of data checksums" 2018-04-09 19:03:42 +02:00
README Add TAP tests for password-based authentication methods. 2017-03-17 11:34:16 +02:00

PostgreSQL tests
================

This directory contains a variety of test infrastructure as well as some of the
tests in PostgreSQL. Not all tests are here -- in particular, there are more in
individual contrib/ modules and in src/bin.

Not all these tests get run by "make check". Check src/test/Makefile to see
which tests get run automatically.

authentication/
  Tests for authentication

examples/
  Demonstration programs for libpq that double as regression tests via
  "make check"

isolation/
  Tests for concurrent behavior at the SQL level

locale/
  Sanity checks for locale data, encodings, etc

mb/
  Tests for multibyte encoding (UTF-8) support

modules/
  Extensions used only or mainly for test purposes, generally not suitable
  for installing in production databases

perl/
  Infrastructure for Perl-based TAP tests

recovery/
  Test suite for recovery and replication

regress/
  PostgreSQL's main regression test suite, pg_regress

ssl/
  Tests to exercise and verify SSL certificate handling

subscription/
  Tests for logical replication

thread/
  A thread-safety-testing utility used by configure