From 5c5184c04397b65e551ddf0250484eb381f50f9f Mon Sep 17 00:00:00 2001
From: Robert Haas <rhaas@postgresql.org>
Date: Thu, 17 Jun 2010 01:32:09 +0000
Subject: [PATCH] Document that receive location can rewind if replication
restarts.
Fujii Masao, with some further wordsmithing by me.
---
doc/src/sgml/func.sgml | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index f4831359215..3037aaf1a6f 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.518 2010/06/10 07:00:25 heikki Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.519 2010/06/17 01:32:09 rhaas Exp $ -->
<chapter id="functions">
<title>Functions and Operators</title>
@@ -13282,10 +13282,13 @@ postgres=# SELECT * FROM pg_xlogfile_name_offset(pg_stop_backup());
<entry><type>text</type></entry>
<entry>Get last transaction log location received and synced to disk by
streaming replication. While streaming replication is in progress
- this will increase monotonically. If recovevery has completed
- this will remain static at the value of the last WAL record
- received and synced to disk during recovery. If streaming replication
- is disabled, or it has not yet started, the function returns NULL.
+ this will increase monotonically. But when streaming replication is
+ restarted this will back off to the replication starting position,
+ typically the beginning of the WAL file containing the current
+ replay location. If recovery has completed this will remain static at
+ the value of the last WAL record received and synced to disk during
+ recovery. If streaming replication is disabled, or if it has not yet
+ started, the function returns NULL.
</entry>
</row>
<row>
--
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