[Spread-users] Spread scaling

[Christopher Browne]

Richard Maxwell wrote:
>
> Hello,
>
>  
>
> I have written an application that uses Spread to process transactions 
> generated from a call from a MySQL stored procedure in another 
> application.  The stored procedure places the message on a queue via 
> the message_api-1.0beta5 libmessage.so shared library.
>
>  
>
> The application works fine with one exception.  Right around 1000 
> messages being sent by spread the receiving application (scala) 
> receives an exception message that spread disconnected.  This causes 
> no more messages to be received.
>
>  
>
> I have read on the internet other people have written applications 
> that receive hundreds of thousands of messages without any problems.  
> I haven’t done any configuration changes to spread.  I just use the 
> defaults that come with it.
>
>  
>
> I am hoping there are some simple changes that can be done to 
> eliminate this problem.
>
>  
>
> Any help is appreciated.
>
>
> Richard
>

The message was... "Connection closed while reading data"???

If so, then I asked much the same question on the list back in 2008, and 
got the following response:
http://marc.info/?l=spread-users&m=120234452625467&w=2

Basically, you need to have something listening on the queue, otherwise 
the queue will fill up, and the spread server will start refusing new 
messages because it can't buffer any more.