From 3596f3706f0fa1b55d03a17da5f4653b162e44e5 Mon Sep 17 00:00:00 2001
From: Gary Tully <gtully@apache.org>
Date: Thu, 18 Nov 2010 13:26:33 +0000
Subject: [PATCH] resolve potential concurrent mod of LinkedHashMap, reads can
 modify as map is access ordered

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1036448 13f79535-47bb-0310-9956-ffa450edef68
---
 .../src/main/java/org/apache/activemq/ConnectionAudit.java      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/activemq-core/src/main/java/org/apache/activemq/ConnectionAudit.java b/activemq-core/src/main/java/org/apache/activemq/ConnectionAudit.java
index 8ff4b95754..d07b92b141 100644
--- a/activemq-core/src/main/java/org/apache/activemq/ConnectionAudit.java
+++ b/activemq-core/src/main/java/org/apache/activemq/ConnectionAudit.java
@@ -64,7 +64,7 @@ class ConnectionAudit {
         return false;
     }
 
-    protected void rollbackDuplicate(ActiveMQDispatcher dispatcher, Message message) {
+    protected synchronized void rollbackDuplicate(ActiveMQDispatcher dispatcher, Message message) {
         if (checkForDuplicates && message != null) {
             ActiveMQDestination destination = message.getDestination();
             if (destination != null) {