digoal
2023-09-26
PostgreSQL , PolarDB , event_triggers , guc , 临时关闭事件触发器
Add GUC for temporarily disabling event triggers
author Daniel Gustafsson <dgustafsson@postgresql.org>
Mon, 25 Sep 2023 10:41:49 +0000 (12:41 +0200)
committer Daniel Gustafsson <dgustafsson@postgresql.org>
Mon, 25 Sep 2023 10:41:49 +0000 (12:41 +0200)
commit 7750fefdb2b81e0ee09c523d0a21cbd37edaf4b2
tree 6e1973a44ffbf5a5ebd91906078ec8bc89d2dc98 tree
parent f19669fed3efe872425c80d4b1f45bf59267b7ea commit | diff
Add GUC for temporarily disabling event triggers
In order to troubleshoot misbehaving or buggy event triggers, the
documented advice is to enter single-user mode. In an attempt to
reduce the number of situations where single-user mode is required
(or even recommended) for non-extraordinary maintenance, this GUC
allows to temporarily suspend event triggers.
This was originally extracted from a larger patchset which aimed
at supporting event triggers on login events.
Reviewed-by: Ted Yu <yuzhihong@gmail.com>
Reviewed-by: Mikhail Gribkov <youzhick@gmail.com>
Reviewed-by: Justin Pryzby <pryzby@telsasoft.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/9140106E-F9BF-4D85-8FC8-F2D3C094A6D9@yesql.se
Discussion: https://postgr.es/m/0d46d29f-4558-3af9-9c85-7774e14a7709@postgrespro.ru
+ <varlistentry id="guc-event-triggers" xreflabel="event_triggers">
+ <term><varname>event_triggers</varname> (<type>boolean</type>)
+ <indexterm>
+ <primary><varname>event_triggers</varname></primary>
+ <secondary>configuration parameter</secondary>
+ </indexterm>
+ </term>
+ <listitem>
+ <para>
+ Allow temporarily disabling execution of event triggers in order to
+ troubleshoot and repair faulty event triggers. All event triggers will
+ be disabled by setting it to <literal>false</literal>. Setting the value
+ to <literal>true</literal> allows all event triggers to fire, this
+ is the default value. Only superusers and users with the appropriate
+ <literal>SET</literal> privilege can change this setting.
+ </para>
+ </listitem>
+ </varlistentry>
