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https://issues.apache.org/jira/browse/CAMEL-8749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen resolved CAMEL-8749.
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Resolution: Not A Problem
Assignee: Claus Ibsen
As the response from Juergen Holler its by design how spring-jms works.
For using client ack mode, you should use spring jms teamplate, or write jms
code yourself etc.
> JMS message always acknowledged even with CLIENT_ACKNOWLEDGE
> ------------------------------------------------------------
>
> Key: CAMEL-8749
> URL: https://issues.apache.org/jira/browse/CAMEL-8749
> Project: Camel
> Issue Type: Wish
> Components: camel-jms
> Reporter: Thomas Diesler
> Assignee: Claus Ibsen
> Fix For: 2.16.0
>
>
> On a JMS message consumer route, we support
> {code}
> jms:...&acknowledgementModeName=CLIENT_ACKNOWLEDGE
> {code}
> The pattern is that a client may chose to process a batch of msgs before it
> acks. If batch processing succeeds the client calls Message.acknowledge(). If
> it fails, the client may choose to recover the msgs in the batch with
> Session.recover()
> In a Processor we can now call Message.acknowledge() or Session.recover().
> However, even if the route (i.e. the client) does not call
> Message.acknowledge() it is called automatically in
> {{org.springframework.jms.listener.AbstractMessageListenerContainer}}
> {code}
> protected void commitIfNecessary(Session session, Message message)
> throws JMSException {
> // Commit session or acknowledge message.
> if (session.getTransacted()) {
> // Commit necessary - but avoid commit call within a
> JTA transaction.
> if (isSessionLocallyTransacted(session)) {
> // Transacted session created by this container
> -> commit.
> JmsUtils.commitIfNecessary(session);
> }
> }
> else if (message != null && isClientAcknowledge(session)) {
> message.acknowledge();
> }
> }
> {code}
> This would not be correct if the route is the JMS client. Redelivery can only
> be achieved in the context of one message invocation
> CrossRef: https://jira.spring.io/browse/SPR-12995
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