Hiya Thanks for that - clarified the issue nicely, but I have now found something odd which may be related.
If I use flow control with fairly small values for memoryLimit e.g. <policyEntry queue="xyz.Queue" useCache="true" producerFlowControl="true" memoryLimit="3mb"> Then if I generate a lot of messages I eventually get an exception as I would expect: javax.jms.ResourceAllocationException: SystemUsage memory limit reached At this point, producers can only write to the queue as space is freed up by by consumers so this works as I would expect. However, if I use a larger memoryLimit value and get an exception when I run out of storage: javax.jms.ResourceAllocationException: Usage Manager Store is Full then the producers seem to hang even if the pending messages are consumed. That is, they always generate a 'Usage Manager Store is Full' exception even if all the message have been consumed. I have also noticed that the 'Store percent used' value in the Admin application never drops once it has got to 100% Any thoughts? Cheers Richard Dejan Bosanac wrote: > > Hi, > > you have set "store usage" in your activemq.xml and set it to fail if > there > is no more space. I just put up a section describing this behavior > > http://cwiki.apache.org/confluence/display/ACTIVEMQ/Producer+Flow+Control#ProducerFlowControl-Systemusage > > Cheers > -- > Dejan Bosanac > > Open Source Integration - http://fusesource.com/ > ActiveMQ in Action - http://www.manning.com/snyder/ > Blog - http://www.nighttale.net > > > On Sun, Feb 22, 2009 at 3:52 PM, Scouser <m...@gmav.demon.co.uk> wrote: > >> >> I'm fairly new to activeMQ and have become stuck on an error. I don't >> seem >> to be able to find much out about the root cause. I have a small example >> which send messages to a couple of queues and reads the messages out. >> I'm >> using Spring's JMS template etc to do most of the hard work. Eventually >> I >> get the following crash: >> ... >> SEVERE: Usage Manager Store is Full; nested exception is >> javax.jms.ResourceAllocationException: Usage Manager Store is Full >> org.springframework.jms.ResourceAllocationException: Usage Manager Store >> is >> Full; nested exception is javax.jms.ResourceAllocationException: Usage >> Manager Store is Full >> at >> >> org.springframework.jms.support.JmsUtils.convertJmsAccessException(JmsUtils.java:298) >> at >> >> org.springframework.jms.support.JmsAccessor.convertJmsAccessException(JmsAccessor.java:168) >> at >> org.springframework.jms.core.JmsTemplate.execute(JmsTemplate.java:474) >> >> ... >> Caused by: javax.jms.ResourceAllocationException: Usage Manager Store is >> Full >> at >> org.apache.activemq.broker.region.Queue.doMessageSend(Queue.java:430) >> at org.apache.activemq.broker.region.Queue.send(Queue.java:417) >> at >> >> org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:354) >> ... >> >> So, what is the 'Usage Manager' ?, any ideas what I may have done wrong?, >> any and all help appreciated! >> >> >> -- >> View this message in context: >> http://www.nabble.com/Usage-Manager-Store-is-Full---Root-Cause--tp22147570p22147570.html >> Sent from the ActiveMQ - User mailing list archive at Nabble.com. >> >> > > > ----- > Dejan Bosanac > > Open Source Integration - http://fusesource.com/ > ActiveMQ in Action - http://www.manning.com/snyder/ > Blog - http://www.nighttale.net > -- View this message in context: http://www.nabble.com/Usage-Manager-Store-is-Full---Root-Cause--tp22147570p22172029.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
