Camel JMS request/Reply timeouts - jms

Question

I am trying to send request/reply a message to a remote broker from camel but the it times out. See config below:
<bean id="providerJMSConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="alwaysSessionAsync" value="false"/>
<property name="alwaysSyncSend" value="true"/>
<property name="brokerURL"><value>${remote-broker-broker-url}</value></property>
<property name="clientID" value=""/>
<property name="closeTimeout" value="15000"/>
<property name="copyMessageOnSend" value="true"/>
<property name="disableTimeStampsByDefault" value="false"/>
<property name="dispatchAsync" value="false"/>
<property name="objectMessageSerializationDefered" value="false"/>
<property name="optimizeAcknowledge" value="false"/>
<property name="optimizedMessageDispatch" value="true"/>
<property name="password" value=""/>
<property name="producerWindowSize" value="0"/>
<property name="statsEnabled" value="false"/>
<property name="useAsyncSend" value="false"/>
<property name="useCompression" value="false"/>
<property name="useRetroactiveConsumer" value="false"/>
<property name="userName" value=""/>
<property name="watchTopicAdvisories" value="true"/>
<property name="sendTimeout" value="0"/>
</bean>
<bean id="providerJMSConfig" class="org.apache.camel.component.jms.JmsConfiguration">
<property name="connectionFactory" ref="aeroProviderJMSConnectionFactory"/>
<property name="deliveryPersistent" value="true"/>
<property name="explicitQosEnabled" value="true"/>
<property name="priority" value="${jms-message-priority}"/>
<property name="acceptMessagesWhileStopping" value="false"/>
</bean>
<bean id="providerJMS" class="org.apache.camel.component.jms.JmsComponent">
<property name="configuration" ref="aeroProviderJMSConfig"/>
</bean>
<osgi:camelContext xmlns="http://camel.apache.org/schema/spring" trace="true">
<endpoint id="providerEndpoint" uri="providerJMS:queue:provider?replyTo=providerResponse&requestTimeout=120000"/>
<route>
<from .....>
<to ref="providerEndpoint"/>
....
</route>
<osgi:camelContext>
Why does this happen? I realised on the remote broker the number of consumers are always more than 1 even though I did not specify how many consumers it should have. Also, whene I removed the replyTo destination, the name still keep coming up on the remote broker.
Pls, is there any tool I can use to debug activemq so that I can see who is picking messages off a queue?

Answer 1

When doing request/reply over JMS with Camel, it uses a 20 sec default timeout. Is it that timeout you hit?
You can alter it, its the requestTimeout option
http://camel.apache.org/jms