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Logical replication

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- Add PUBLICATION catalogs and DDL
- Add SUBSCRIPTION catalog and DDL
- Define logical replication protocol and output plugin
- Add logical replication workers

From: Petr Jelinek <petr@2ndquadrant.com>
Reviewed-by: Steve Singer <steve@ssinger.info>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Erik Rijkers <er@xs4all.nl>
Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
This commit is contained in:
Peter Eisentraut
2017-01-19 12:00:00 -05:00
parent ba61a04bc7
commit 665d1fad99
119 changed files with 13354 additions and 95 deletions
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110
doc/src/sgml/ref/drop_subscription.sgml Normal file
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<!--
doc/src/sgml/ref/drop_subscription.sgml
PostgreSQL documentation
-->
<refentry id="SQL-DROPSUBSCRIPTION">
<indexterm zone="sql-dropsubscription">
<primary>DROP SUBSCRIPTION</primary>
</indexterm>
<refmeta>
<refentrytitle>DROP SUBSCRIPTION</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DROP SUBSCRIPTION</refname>
<refpurpose>remove a subscription</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
DROP SUBSCRIPTION [ IF EXISTS ] <replaceable class="parameter">name</replaceable> [ <replaceable class="parameter">DROP SLOT</replaceable> | <replaceable class="parameter">NODROP SLOT</replaceable> ]
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>DROP SUBSCRIPTION</command> removes a subscription from the
database cluster.
</para>
<para>
A subscription can only be dropped by a superuser.
</para>
<para>
The replication worker associated with the subscription will not stop until
after the transaction that issued this command has committed.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name of a subscription to be dropped.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">DROP SLOT</replaceable></term>
<term><replaceable class="parameter">NODROP SLOT</replaceable></term>
<listitem>
<para>
Specifies whether to drop the replication slot on the publisher. The
default is
<literal>DROP SLOT</literal>.
</para>
<para>
If the publisher is not reachable when the subscription is to be
dropped, then it is useful to specify <literal>NODROP SLOT</literal>.
But the replication slot on the publisher will then have to be removed
manually.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
Drop a subscription:
<programlisting>
DROP SUBSCRIPTION mysub;
</programlisting>
</para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
<command>DROP SUBSCRIPTION</command> is a <productname>PostgreSQL</>
extension.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-createsubscription"></member>
<member><xref linkend="sql-altersubscription"></member>
</simplelist>
</refsect1>
</refentry>