hi guys,

I want to enusure that some items are only once in my queue so i set:

    <address-setting match="io.testq">  
        <last-value-queue>true</last-value-queue>
      </address-setting>

when i'm adding two messages, and receive one one, but the message counter is always decremented by two:

the following code

 ClientMessage message = session.createMessage(true);
    SimpleString myUniqueID = new SimpleString(objId);
    message.putStringProperty(Message.HDR_LAST_VALUE_NAME, myUniqueID);
    message.getBodyBuffer().writeString("test");
    producer.send(message);
    
    
    ClientRequestor requestor = new ClientRequestor(session,
        "jms.queue.hornetq.management");
    ClientMessage newMessage = session.createMessage(false);
    ManagementHelper.putAttribute(newMessage, ResourceNames.CORE_QUEUE
        + queueName, "messageCount");
    ClientMessage reply = requestor.request(newMessage);
    int count = Integer.parseInt(ManagementHelper.getResult(reply).toString());
    System.out.println("There are " + count + " messages in " + queueName);

    ClientMessage message2 = session.createMessage(true);
    message2.putStringProperty(Message.HDR_LAST_VALUE_NAME, myUniqueID);
    message2.getBodyBuffer().writeString("test2");
    producer.send(message2);

    reply = requestor.request(newMessage);
    count = Integer.parseInt(ManagementHelper.getResult(reply).toString());
    System.out.println("There are " + count + " messages in " + queueName);

    consumer = session.createConsumer(queueName);
    ClientMessage msgReceived = consumer.receive();
    System.out.println("message = " + msgReceived.getBodyBuffer().readString());
    msgReceived.acknowledge();

    reply = requestor.request(newMessage);
    count = Integer.parseInt(ManagementHelper.getResult(reply).toString());
    System.out.println("There are " + count + " messages in " + queueName);

procuces the following output

There are 1 messages in last_value_queue
There are 1 messages in last_value_queue
message = test2
There are -1 messages in last_value_queue

is that a correct behaviour?