Hangs in fan-in to DUPS_OK_ACKNOWLEDGE queue receivers
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Key: AMQ-2401
URL: https://issues.apache.org/activemq/browse/AMQ-2401
Project: ActiveMQ
Issue Type: Bug
Affects Versions: 5.3.0
Environment: N/A
Reporter: Colin MacNaughton
While running performance tests I I was seeing hangs in several tests
involving dups ok queue receivers. My suspicion is that this is related to "too
lazy" dups_ok acknowledgements. Changing the queue prefetchLimit to 100 caused
this problem to go away. This needs more investigation, but it seems like we
can get ourselves in to trouble if the queue size is smaller than the
receiver's prefetchLimit, and this should be avoid. It is also possible that
there is something more complicated happening in my tests. I haven't yet been
able to reproduce this outside my performance test environment.
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