Thank you for your answer. This would be explained why consumers didn't get a message when all messages are prefetched by other consumers.
Suppose we have 21.000 messages. The prefect limit is set to 1000 (default value). One consumer consumes some of the messages. Then it stops and leaves the connection open. So in this case there are for example 20.000 messages that aren't prefetched. If I understand you correctly other consumer can consume these messages. But we have the phenomenon that this is not the case. The other consumers hangs. But if we decrease the prefetch limit to for example 50 other consumers can consume messages. If we set it to 800 other consumers can consume some of the messages but blocks at any time :-(. -- View this message in context: http://activemq.2283324.n4.nabble.com/Unpredictable-behavior-of-the-ActieMQ-broker-if-the-prefetch-size-is-changed-tp3297083p3298622.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
