From 61f84ebcf0d23542338bb7f45b6a4bef77744345 Mon Sep 17 00:00:00 2001
From: Simon MacMullen <simon@rabbitmq.com>
Date: Tue, 22 Nov 2011 14:21:19 +0000
Subject: Don't add message id to the set of msgs we've heard of from gm but
 not channel, if we actually *have* heard of it from the channel.

---
 src/rabbit_mirror_queue_slave.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rabbit_mirror_queue_slave.erl b/src/rabbit_mirror_queue_slave.erl
index 7182042d..73eaed14 100644
--- a/src/rabbit_mirror_queue_slave.erl
+++ b/src/rabbit_mirror_queue_slave.erl
@@ -725,7 +725,7 @@ process_instruction(
                     never ->
                         {MQ2, PendingCh, MS};
                     eventually ->
-                        {MQ2, sets:add_element(MsgId, PendingCh),
+                        {MQ2, PendingCh,
                          dict:store(MsgId, {published, ChPid, MsgSeqNo}, MS)};
                     immediately ->
                         ok = rabbit_channel:confirm(ChPid, [MsgSeqNo]),
-- 
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