[jboss-dev-forums] [Design the new POJO MicroContainer] - Re: Declaration and deployment of threads and thread pools i

[david.lloyd@jboss.com]

One observation about using a corePoolSize of 0.  The most obvious reason you'd do this is to prevent a thread pool from having threads hanging around when there are no tasks.  However, if you have a non-zero-length queue, then no threads will be started until the queue is full.  This means that if the queue is never filled, the tasks will never run.

I think that for this use case, the proper solution, introduced as of JDK6 into ThreadPoolExecutor, is to use a non-zero corePoolSize and enable core thread timeouts.

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