Marek Laca created QPID-8534:
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Summary: [Broker-J] Improper interuption of connection processing
loop
Key: QPID-8534
URL: https://issues.apache.org/jira/browse/QPID-8534
Project: Qpid
Issue Type: Improvement
Components: Broker-J
Reporter: Marek Laca
The network connection scheduler (NetworkConnectionScheduler class) contains a
thread pool. IO-threads are polling jobs from the scheduler work queue and
executing them. The connection job works in the loop. The loop is interrupted
when there is not any data to process or all IO-threads are occupied.
If the loop is interrupted then the IO-thread pushes the connection job back
into the queue and picks the next job from the queue. It should ensure that any
job is not abandoned and it is not waiting in the queue for ever.
But when the number of jobs equals to the thread pool size then IO-thread stops
processing the connection job, pushes it back into the queue and polls the same
job again, again and again.
The connection job could check whether is there any job in the scheduler queue.
If the queue was not empty then the connection working loop would be
interrupted and the thread could pick up another job. It would simplified the
broker code significantly.
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