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From "Timothy Bish (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (AMQ-1873) Stomp connections doesn't seem to be released cleanly (Too many open files error)
Date Tue, 05 Jul 2011 20:32:17 GMT

     [ https://issues.apache.org/jira/browse/AMQ-1873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Timothy Bish closed AMQ-1873.
-----------------------------

    Resolution: Duplicate

This is in some ways related to AMQ-3393. There is also the fact that Stomp 1.0 doesn't allow
for a keep alive so sometimes connection drops aren't detected. 

Reopen if the problem persists.

> Stomp connections doesn't seem to be released cleanly (Too many open files error)
> ---------------------------------------------------------------------------------
>
>                 Key: AMQ-1873
>                 URL: https://issues.apache.org/jira/browse/AMQ-1873
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.1.0
>         Environment: Linux RHEL 4
> java version "1.5.0_15"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
> Java HotSpot(TM) Server VM (build 1.5.0_15-b04, mixed mode)
>            Reporter: Julien Devemy
>             Fix For: NEEDS_REVIEWED
>
>         Attachments: activemq.xml
>
>
> I'm actually testing ActiveMQ with a python stomp Client (stomp.py http://www.briggs.net.nz/log/projects/stomppy/).
> I'm trying to load the broker with ~200 producers (on ~200 hosts) feeding one TOPIC for
only one consumer.
> Everything is working almost fine until the client connection fails.
> The ActiveMQ log displays :
> ...
> 2008-07-30 09:28:43,665 [localhost:61613] ERROR TransportConnector             - Could
not accept connection : Too many open files
> 2008-07-30 09:28:43,665 [localhost:61613] DEBUG TransportConnector             - Reason:
Too many open files
> java.net.SocketException: Too many open files
> 	at java.net.PlainSocketImpl.socketAccept(Native Method)
> 	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> 	at java.net.ServerSocket.implAccept(ServerSocket.java:450)
> 	at java.net.ServerSocket.accept(ServerSocket.java:421)
> 	at org.apache.activemq.transport.tcp.TcpTransportServer.run(TcpTransportServer.java:221)
> 	at java.lang.Thread.run(Thread.java:595)
> When I look at the open files (or connections) (with lsof) I see 65446 lines like :
> java    26765 root *066u  sock        0,4          7534034 can't identify protocol
> This seems to indicate that ActiveMQ doesn't totally released the UNIX socket
> I'm attaching the activemq.xml conf file.

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