4 Replies Latest reply on Jul 11, 2011 12:43 PM by pchandler

Could not accept connection : java.net.SocketException

pchandler Jul 5, 2011 7:30 PM

I have the following in my activeMQ 5.4 log. Any ideas?

2011-07-05 19:21:34,620 | ERROR | Could not accept connection : java.net.SocketException: Too many open files | org.apache.activemq.broker.TransportConnector | ActiveMQ Transport Server: tcp://0.0.0.0:61616
2011-07-05 19:21:34,620 | ERROR | Could not accept connection : java.net.SocketException: Too many open files | org.apache.activemq.broker.TransportConnector | ActiveMQ Transport Server: tcp://0.0.0.0:61616
2011-07-05 19:21:34,620 | WARN  | EXCEPTION  | org.eclipse.jetty.util.log | qtp1358669058-57 - Acceptor0 SelectChannelConnector@0.0.0.0:8161
java.io.IOException: Too many open files
        at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
        at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:145)
        at org.eclipse.jetty.server.nio.SelectChannelConnector$1.acceptChannel(SelectChannelConnector.java:75)
        at org.eclipse.jetty.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:651)
        at org.eclipse.jetty.io.nio.SelectorManager.doSelect(SelectorManager.java:180)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.accept(SelectChannelConnector.java:135)
        at org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:776)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)
        at java.lang.Thread.run(Thread.java:619)

1. Re: Could not accept connection : java.net.SocketException

jradecki Jul 7, 2011 11:53 AM (in response to pchandler)

Check the handles associated w/ActiveMQ and your service...
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2. Re: Could not accept connection : java.net.SocketException

pchandler Jul 7, 2011 3:32 PM (in response to jradecki)
Sorry, not sure what handles to check?

The only thing I could come-up with is, maybe it's Linux resource limits (open files)

ActiveMQ process has 1161 FDs open?
hostname[apache-activemq-5.4.0/data] 113 ->lsof -p 7973 | wc -l 1162

Seem like alot?
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3. Re: Could not accept connection : java.net.SocketException

davsclaus Jul 8, 2011 3:07 AM (in response to pchandler)

What persistent storage do you use with ActiveMQ?
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4. Re: Could not accept connection : java.net.SocketException

pchandler Jul 11, 2011 12:43 PM (in response to davsclaus)

Answer: None. persistent="false" and we commented-out KahaDB. Is that bad?

        <!-- 
            Configure message persistence for the broker. The default persistence
            mechanism is the KahaDB store (identified by the kahaDB tag). 
            For more information, see: 
            
            http://activemq.apache.org/persistence.html 
        -->
<!--
        <persistenceAdapter>
            <kahaDB directory="${activemq.base}/data/kahadb"></kahaDB>
        </persistenceAdapter>
-->

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