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From deathemperor <deathempe...@gmail.com>
Subject ActiveMQ 5.2 too many open files exception
Date Tue, 31 Mar 2009 03:34:03 GMT

I'm running AMQ 5.2.0 and keep getting the error:

2009-03-31 08:41:28,674 [or@0.0.0.0:8161] WARN  log                           
- EXCEPTION 
java.io.IOException: Too many open files
	at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
	at sun.nio.ch.ServerSocketChannelImpl.accept(Unknown Source)
	at
org.mortbay.jetty.nio.SelectChannelConnector$1.acceptChannel(SelectChannelConnector.java:75)
	at
org.mortbay.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:475)
	at org.mortbay.io.nio.SelectorManager.doSelect(SelectorManager.java:166)
	at
org.mortbay.jetty.nio.SelectChannelConnector.accept(SelectChannelConnector.java:124)
	at
org.mortbay.jetty.AbstractConnector$Acceptor.run(AbstractConnector.java:537)
	at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)

This cause either of these problem:

- ActiveMQ process hangs on Apache, no messages can be sent or received, the
AMQ admin is not responding at the time either.
- AMQ & AMQ admin running but no messages can be sent although
receiver/consumer can still connect and check for message.


The pre-procedure is to start AMQ as background service, running message up
to 18-20k and the above occurs.

Some of my conf:
- maxFileLength: 1gb
- ulimit -n: 10240
- cealnupInterval: 1000 (ms)


My another concern is why cealnupInterval doesn't work. Nothing get cleaned
up as I expect the data file of the queue does.

Please anyone help.
-- 
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