ActiveMQ topic as input endpoint in Apache Camel

Hi,

I have a camel route having input endpoint as activemq topic. I have added a
selector to the topic for checking a header. But it looks like I am losing
messages on the topic. My topic configuration is as follows:

ActiveMQConnectionFactory connectionFactory = new
ActiveMQConnectionFactory();
if(!routeDetails.getInputEndPoint().startsWith("failover")){
//This method will generate the hostname which will act as broker url in
this case.
getBasicUrl(ACTIVE_MQ_TOPIC_PREFIX, true, INPUT);
if(!Util.isNullOrEmpty(hostName,port)){
connectionFactory.setBrokerURL(TCP + hostName + COLON + port);
}else{
throw new Exception("Broker url could not be set as IP address/Port
could not be obtained from input.");

else{
connectionFactory.setBrokerURL(routeDetails.getInputEndPoint());

StringBuilder inputLocations = new StringBuilder(ACTIVE_MQ_TOPIC_PREFIX);
inputLocations.append(inputProperties[1]);
inputLocations.append(QUESTION_MARK+"maxConcurrentConsumers=" +
(MIN_CONSUMERS+(int)(Math.random()*MAX_CONSUMERS)));
jmsEndpoint = (JmsEndpoint)
getContext().getEndpoint(inputLocations.toString());

PooledConnectionFactory pooledConnectionFactory = new
PooledConnectionFactory();
pooledConnectionFactory.setMaxConnections(1);
pooledConnectionFactory.setConnectionFactory(connectionFactory);

ActiveMQConfiguration jmsConfiguration = new ActiveMQConfiguration();
jmsConfiguration.setPreserveMessageQos(true);
jmsConfiguration.setUsePooledConnection(false);
jmsConfiguration.setUseSingleConnection(true);
//Set the consumer type to custom which will help us in getting our own
messageListenerContainer.
jmsConfiguration.setConsumerType(ConsumerType.Custom);
//Override the DMLC by creating our own messageListenerContainer which
will help
//in cases when jms is down and we want to configure the number of
retries.
jmsConfiguration.setMessageListenerContainerFactory(new
MessageListenerContainer());
jmsConfiguration.setConnectionFactory(pooledConnectionFactory);
jmsConfiguration.createMessageListenerContainer(jmsEndpoint);

jmsEndpoint.setConfiguration(jmsConfiguration);
jmsEndpoint.setTransacted(true);
jmsEndpoint.setSelector("header1='abc'");

I am pushing two messages with the header1 = abc but only one of them is
picked by the route. The route does some processing on the first message and
then sleeps.

Can someone tell me if there is some issue with the configuration of the jms
endpoint?

Thanks,
Richa