[Building Sakai] shutdown issue, possibly activemq

[Matthew Jones]

Hi Josh,

Activemq (the messageservice) is still not part of any standard Sakai
release so not too many others would be seeing this. :)

https://jira.sakaiproject.org/browse/SAK-18006?focusedCommentId=92720&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-92720

This page suggests that upgrading the version fixed this similar problem but
that was quite a while ago.
"Changed ActiveMQ to version 5.1 to fix 'hanging' broker and client during
shutdown problem."
https://confluence.sakaiproject.org/display/SAKDEV/Sakai+MessageService

On Fri, Sep 30, 2011 at 6:19 PM, Joshua Swink <joshua.swink at gmail.com>wrote:

> We are using Sakai 2.7.1 with multiple tomcats on each server, and
> they fail to shut down properly. I'm checking out the thread dumps and
> such, and wonder if anyone can confirm whether this snippet might
> indicate the culprit:
>
> "ActiveMQ Transport: tcp://localhost/127.0.0.1:61616" prio=3
> tid=0x0e98d400 nid=0x61 runnable [0x37237000]
>   java.lang.Thread.State: RUNNABLE
>        at java.net.SocketInputStream.socketRead0(Native Method)
>        at java.net.SocketInputStream.read(SocketInputStream.java:129)
>        at
> org.apache.activemq.transport.tcp.TcpBufferedInputStream.fill(TcpBufferedInputStream.java:50)
>        at
> org.apache.activemq.transport.tcp.TcpTransport$2.fill(TcpTransport.java:575)
>        at
> org.apache.activemq.transport.tcp.TcpBufferedInputStream.read(TcpBufferedInputStream.java:58)
>        at
> org.apache.activemq.transport.tcp.TcpTransport$2.read(TcpTransport.java:560)
>        at java.io.DataInputStream.readInt(DataInputStream.java:370)
>        at
> org.apache.activemq.openwire.OpenWireFormat.unmarshal(OpenWireFormat.java:269)
>        at
> org.apache.activemq.transport.tcp.TcpTransport.readCommand(TcpTransport.java:226)
>        at
> org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:218)
>        at
> org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:201)
>        at java.lang.Thread.run(Thread.java:662)
>
> I'm concerned with multiple processes all trying to listen on the same
> port, but not sure if this could cause such a problem.
>
> Josh
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