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From: Rob Davies <rajdavies@gmail.com>
To: users@activemq.apache.org
In-Reply-To: <69b2d60e1001130950mf34dbey132a9880b48a17fc@mail.gmail.com>
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Subject: Re: Trivial embedded broker not shutting down cleanly because of
  lingering threads
Date: Wed, 13 Jan 2010 18:52:51 +0000
References: <69b2d60e1001130950mf34dbey132a9880b48a17fc@mail.gmail.com>

Do you actually call stop() on the broker ? - Have you disabled the  
shutdownHook from the broker ?
If you could post your code - or sample of it - might help identify  
why your main isn't shutting down
On 13 Jan 2010, at 17:50, Fred Moore wrote:

> Hi folks,
>
> we have a 5.3.0 embedded broker that refuses to shutdown cleanly  
> because of
> lingering threads.
>
> We reproduced this with a very very basic configuration: with just  
> vm & jmx
> connectors, no producers and no consumers and and this extremely  
> simple
> main() program: http://pastebin.com/f2784245a that:
>
> 1\ Starts up an embedded broker
>
> 2\ Waits for the user to press a key
>
> 3\ Stops the broker
>
> 4\ Monitors (polling every few seconds) the number of lingering  
> threads
>
> What we experience is that after step 1\ (broker startup) this is  
> the list
> of active threads...
>
> * [main] Group: main
> * [ActiveMQ Scheduler] (Daemon) Group: main
> * [ActiveMQ Data File Writer] (Daemon) Group: main
> * [Timer-0] (Daemon) Group: main
> * [JMX connector] (Daemon) Group: main
>
> ...but a long time (dozens of seconds) after step 3\ (broker  
> shutdown) these
> threads are still active:
>
> * [main]  Group: main
> * [ActiveMQ Scheduler] (Daemon) Group: main
> * [Timer-0] (Daemon) Group: main
>
> Questions:
> Q1\ Are we missing something obvious?
> Q2\ Is there a better way to shutdown an embedded broker?
> Q3\ Doing it the hard way via system.exit() is going to get us into  
> worse
> troubles? (data corruption & co)
>
> Thanks in advance for your help.
> Cheers,
> F.
>
>
>
>
> The embedding was performed

Rob Davies
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