QPID-8210: [Broker-J] Make field QueueConsumerImpl#_queueConsumerNode volatile
diff --git a/broker-core/src/main/java/org/apache/qpid/server/queue/QueueConsumerImpl.java b/broker-core/src/main/java/org/apache/qpid/server/queue/QueueConsumerImpl.java
index e6974e7..2f637ee 100644
--- a/broker-core/src/main/java/org/apache/qpid/server/queue/QueueConsumerImpl.java
+++ b/broker-core/src/main/java/org/apache/qpid/server/queue/QueueConsumerImpl.java
@@ -101,7 +101,7 @@
 
     private final String _linkName;
 
-    private QueueConsumerNode _queueConsumerNode;
+    private volatile QueueConsumerNode _queueConsumerNode;
 
     QueueConsumerImpl(final AbstractQueue<?> queue,
                       T target,