From 4bd8ed31b76fde16ee00c123751e25019e4d9854 Mon Sep 17 00:00:00 2001
From: Simon Riggs <simon@2ndQuadrant.com>
Date: Tue, 19 Jul 2011 08:59:55 +0100
Subject: [PATCH] Introduce sending servers as new category for replication
 params

Fujii Masao
---
 src/backend/utils/misc/guc.c                  | 10 ++++++----
 src/backend/utils/misc/postgresql.conf.sample | 11 ++++++++---
 src/include/utils/guc_tables.h                |  1 +
 3 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 3b33549a57..9f9f9c533f 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -557,6 +557,8 @@ const char *const config_group_names[] =
 	gettext_noop("Write-Ahead Log / Archiving"),
 	/* REPLICATION */
 	gettext_noop("Replication"),
+	/* REPLICATION_SENDING */
+	gettext_noop("Replication / Sending Servers"),
 	/* REPLICATION_MASTER */
 	gettext_noop("Replication / Master Server"),
 	/* REPLICATION_STANDBY */
@@ -1918,7 +1920,7 @@ static struct config_int ConfigureNamesInt[] =
 	},
 
 	{
-		{"wal_keep_segments", PGC_SIGHUP, REPLICATION_MASTER,
+		{"wal_keep_segments", PGC_SIGHUP, REPLICATION_SENDING,
 			gettext_noop("Sets the number of WAL files held for standby servers."),
 			NULL
 		},
@@ -1986,7 +1988,7 @@ static struct config_int ConfigureNamesInt[] =
 
 	{
 		/* see max_connections */
-		{"max_wal_senders", PGC_POSTMASTER, REPLICATION_MASTER,
+		{"max_wal_senders", PGC_POSTMASTER, REPLICATION_SENDING,
 			gettext_noop("Sets the maximum number of simultaneously running WAL sender processes."),
 			NULL
 		},
@@ -1996,7 +1998,7 @@ static struct config_int ConfigureNamesInt[] =
 	},
 
 	{
-		{"wal_sender_delay", PGC_SIGHUP, REPLICATION_MASTER,
+		{"wal_sender_delay", PGC_SIGHUP, REPLICATION_SENDING,
 			gettext_noop("WAL sender sleep time between WAL replications."),
 			NULL,
 			GUC_UNIT_MS
@@ -2007,7 +2009,7 @@ static struct config_int ConfigureNamesInt[] =
 	},
 
 	{
-		{"replication_timeout", PGC_SIGHUP, REPLICATION_MASTER,
+		{"replication_timeout", PGC_SIGHUP, REPLICATION_SENDING,
 			gettext_noop("Sets the maximum time to wait for WAL replication."),
 			NULL,
 			GUC_UNIT_MS
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index fa67e7a3d5..037316e727 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -194,19 +194,24 @@
 # REPLICATION
 #------------------------------------------------------------------------------
 
-# - Master Server -
+# - Sending Server(s) -
 
-# These settings are ignored on a standby server
+# Set these on the master and on any standby that will send replication data
 
 #max_wal_senders = 0		# max number of walsender processes
 				# (change requires restart)
 #wal_sender_delay = 1s		# walsender cycle time, 1-10000 milliseconds
 #wal_keep_segments = 0		# in logfile segments, 16MB each; 0 disables
-#vacuum_defer_cleanup_age = 0	# number of xacts by which cleanup is delayed
 #replication_timeout = 60s	# in milliseconds; 0 disables
+
+# - Master Server -
+
+# These settings are ignored on a standby server
+
 #synchronous_standby_names = ''	# standby servers that provide sync rep
 				# comma-separated list of application_name
 				# from standby(s); '*' = all
+#vacuum_defer_cleanup_age = 0	# number of xacts by which cleanup is delayed
 
 # - Standby Servers -
 
diff --git a/src/include/utils/guc_tables.h b/src/include/utils/guc_tables.h
index d3b25812a0..84e9fb54d2 100644
--- a/src/include/utils/guc_tables.h
+++ b/src/include/utils/guc_tables.h
@@ -69,6 +69,7 @@ enum config_group
 	WAL_CHECKPOINTS,
 	WAL_ARCHIVING,
 	REPLICATION,
+	REPLICATION_SENDING,
 	REPLICATION_MASTER,
 	REPLICATION_STANDBY,
 	QUERY_TUNING,
-- 
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