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Hi,

I added "!writer.isInterrupted()" to stop the (write)loop and now the threads are stopped.

In context "SlaveConnection.java"

 writer = new Thread()
            {
            public void run()
                {
                while( !writer.isInterrupted() )
                	writeLoop();
                }
            };

Greetings,

	Ralf

On Sep 6, 2013, at 11:59, Ralf Buschermöhle <[log in to unmask]> wrote:

> Hi,
> 
> unfortunately adding memory does not solve the problem. 
> 
> It does not seem to be heap related ... I jstacked after 56 slaves, after 500 adding and removing (also waited for the disconnect messages) slaves and after the next 500 I received the Exception.
> 
> And the number of threads did not reduce after waiting.
> 
> I attached the thread dumps.
> 
> It's the slaveMonitor ... who does not receive an interrupt?
> 
> public boolean waitOnMonitor(Object monitor)
>        {
>        try
>            {
>            monitor.wait();
>            }
>        catch (InterruptedException e) { return false; }
>        return true;
>        }
> 
> Greetings,
> 
> 	Ralf
> 
> 
> <56.stack><56+-500.stack><Exception.stack>
> 
>