Hi,
Here is a patch for the pg_receivewal documentation to highlight that
WAL isn't acknowledged to be applied.
I'll add a CF entry for it.
Best regards,
Jesper
>From 138e09c74db5ea08fd03b4e77853e2ca01742512 Mon Sep 17 00:00:00 2001
From: jesperpedersen <jesper.peder...@redhat.com>
Date: Thu, 27 Jun 2019 09:54:44 -0400
Subject: [PATCH] Highlight that pg_receivewal doesn't acknowledge that WAL has
been applied, and as such synchronous-commit needs to be remote_write or
lower.
Author: Jesper Pedersen <jesper.peder...@redhat.com>
---
doc/src/sgml/ref/pg_receivewal.sgml | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/doc/src/sgml/ref/pg_receivewal.sgml b/doc/src/sgml/ref/pg_receivewal.sgml
index 0506120c00..132a599d1b 100644
--- a/doc/src/sgml/ref/pg_receivewal.sgml
+++ b/doc/src/sgml/ref/pg_receivewal.sgml
@@ -207,6 +207,14 @@ PostgreSQL documentation
server as a synchronous standby, to ensure that timely feedback is
sent to the server.
</para>
+
+ <para>
+ Note, that <application>pg_receivewal</application> doesn't acknowledge
+ that the Write-Ahead Log (<xref linkend="wal-intro"/>) has been applied, so
+ <xref linkend="guc-synchronous-commit"/> needs to have a setting
+ of <literal>remote_write</literal> or lower, if <application>pg_receivewal</application>
+ is the only standby.
+ </para>
</listitem>
</varlistentry>
--
2.21.0
