MessageRequeueTest.testTwoCompetingConsumers occasionally fails
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Key: QPID-580
URL: https://issues.apache.org/jira/browse/QPID-580
Project: Qpid
Issue Type: Bug
Components: Java Broker, Java Client
Reporter: Rafael H. Schloming
There are a few odd things about this test as it is written. It is called
test*Two*CompetingConsumers, however it actually creates 4 consumers and then
only starts 3 out of the 4. Also, the way the test is constructed, it is
theoretically possible for it to fail even though there is no bug. This is
because each competing consumer will exit whenever it takes longer than 3
seconds to retrieve a message. This makes it impossible to tell whether the
test is failing because messages have been lost, or whether it is simply
failing because messages remain in the queue. The former would indicate a real
bug, whereas the latter could occasionally occur spontaneously if the competing
threads get starved.
We should probably check the number of messages left in the queue and fail with
a different assertion of messages have actually been lost. This should tell us
if the occasional failures are spurious or not and if so permit us to tune the
retrieve timeout in order to avoid them.
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