ooh - that'll be it! - will fix - thanks Bruce!
On 16 Apr 2008, at 20:18, Bruce Hurd wrote:
Thanks for the reply Rob,
We haven't tested the java client but heres some further updates to
the
problem:
testing against 5.1 RC3, sometimes there is an exception from the
ActiveMQScheduler thread (see below) which i assume is the file
cleanup
process. When I saw this and restarted the broker, it reported no
data
files were in use and deleted them all. In further executions, this
exception didnt occur and the files are being cleaned up as
expected. So,
using 5.1 RC3 and the latest build of the NMS project, expected
behaviour is
occurring sometimes.
Any idea why this exception would be thrown, or what would be the
best way
to monitor for exceptions from the ActiveMQ Scheduler and restart
the broker
when they occur?
Cheers,
Bruce.
Exception in thread "ActiveMQ Scheduler"
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:787)
at java.util.HashMap$KeyIterator.next(HashMap.java:823)
at java.util.AbstractSet.removeAll(AbstractSet.java:143)
at
org
.apache
.activemq
.kaha
.impl
.async
.AsyncDataManager.consolidateDataFilesNotIn(AsyncDataManager.java:404)
at
org
.apache
.activemq
.store.amq.AMQPersistenceAdapter.cleanup(AMQPersistenceAdapter.java:
417)
at
org.apache.activemq.store.amq.AMQPersistenceAdapter
$3.run(AMQPersistenceAdapter.java:269)
at
org
.apache
.activemq.thread.SchedulerTimerTask.run(SchedulerTimerTask.java:33)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)
rajdavies wrote:
On 16 Apr 2008, at 19:17, Bruce Hurd wrote:
Does anyone have any ideas why the data files in the journal folder
are never
deleted.
Test:
Install ActiveMQ 5 / 5.1 on Windows platform
Modify default config not discover / network with other brokers, and
set the
data file size of the amqPersistenceAdapter to 1mb (so we get lots
of files)
publish 10000 messages at about 500K each using the ActiveMQ .net
client to
a queue.
Subscribe to the queue using the .net client with ClientAcknowledge
and
attach a listener.
Receive all the messages, acknowledging each one and close client.
Check the queues attributes on JConsole (enqueue 10000, dequeue
10000, queue
size 0)
wait for the data files to be deleted. This never happens!!
Any idea? This is making us run the broker in non persistent mode
(not
good!) till we find a solution.
Thanks in advance,
Bruce.
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Hi Bruce,
do you get the same behavior with a java client ? Just trying to
narrow the domain down a little - as I haven't seen the same
cheers,
Rob
http://open.iona.com/ -Enterprise Open Integration
http://rajdavies.blogspot.com/
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