activemq-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Bruce Hurd <bruce.h...@betgenius.com>
Subject Re: AMQ Journal data files never deleted
Date Wed, 16 Apr 2008 19:18:08 GMT

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.
>>
>>
>> -- 
>> View this message in context:
>> http://www.nabble.com/AMQ-Journal-data-files-never-deleted-tp16728103s2354p16728103.html
>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>>
> 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/
> 
> 
> 
> 
> 

-- 
View this message in context: http://www.nabble.com/AMQ-Journal-data-files-never-deleted-tp16728103s2354p16731446.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.


Mime
View raw message