Thanks Claus - that did the trick [?]
The following link did help to understand the background: http://activemq.apache.org/what-is-the-prefetch-limit-for.html Thanks Oli Apache ActiveMQ (tm) -- What is the Prefetch Limit For?<http://activemq.apache.org/what-is-the-prefetch-limit-for.html> activemq.apache.org Pooled Consumers and Prefetch. Consuming messages from a pool of consumers an be problematic due to prefetch. Unconsumed prefetched messages are only released when a ... ________________________________ Von: Claus Ibsen <[email protected]> Gesendet: Donnerstag, 24. November 2016 17:20:02 An: [email protected] Betreff: Re: Instead of parallel JMS consumption only sequentially processed Set a lower prefetch buffer on ActiveMQ as each consumer polls in 1000 messages by default. On Thu, Nov 24, 2016 at 2:54 PM, Oliver Wulff <[email protected]> wrote: > Hi there > > > I've deployed a camel route in Karaf 4.0.3 which is configured to consume > JMS messages in parallel (concurrentConsumers=2, maxConcurrentConsumers=6). > But Camel consumes the messages sequentially only. I've created a testcase > which depends on a ConnectionFactory managed by Karaf (MOM, ActiveMQ). The > testcase contains two routes. The route 'jms-produce' produces jms messages > every 200ms whereas 'jms-consume' consumes the messages with a delay of 5 > seconds. The testcase illustrates that messages are processed sequentially. > > > 2016-11-24 14:36:57,696 | INFO | nsole user karaf | OsgiSpringCamelContext > | 161 - org.apache.camel.camel-core - 2.15.4 | Route: jms-consume started > and consuming from: > Endpoint[jms://queue:TEST?concurrentConsumers=2&maxConcurrentConsumers=6] > 2016-11-24 14:36:57,756 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message consumed > ID-ubuntu-wuol-49091-1479978003649-7-297 > 2016-11-24 14:37:02,761 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message successfully > processed ID-ubuntu-wuol-49091-1479978003649-7-297 > 2016-11-24 14:37:02,763 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message consumed > ID-ubuntu-wuol-49091-1479978003649-7-298 > 2016-11-24 14:37:07,764 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message successfully > processed ID-ubuntu-wuol-49091-1479978003649-7-298 > 2016-11-24 14:37:07,766 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message consumed > ID-ubuntu-wuol-49091-1479978003649-7-299 > 2016-11-24 14:37:12,770 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message successfully > processed ID-ubuntu-wuol-49091-1479978003649-7-299 > 2016-11-24 14:37:12,772 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message consumed > ID-ubuntu-wuol-49091-1479978003649-7-300 > 2016-11-24 14:37:17,775 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message successfully > processed ID-ubuntu-wuol-49091-1479978003649-7-300 > 2016-11-24 14:37:17,777 | INFO | msConsumer[TEST] | jms-consume > | 161 - org.apache.camel.camel-core - 2.15.4 | JMS message consumed > ID-ubuntu-wuol-49091-1479978003649-7-301 > > What am I doing wrong? Thanks for any hints. > > > Thanks > > Oli -- Claus Ibsen ----------------- http://davsclaus.com @davsclaus Camel in Action 2: https://www.manning.com/ibsen2
