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https://issues.apache.org/jira/browse/DISPATCH-1431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16943130#comment-16943130
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Ken Giusti commented on DISPATCH-1431:
--------------------------------------

This is a race condition on the test itself:

The sender is sending it's one test message before all receivers have completed 
attaching.  So the multicast only goes to one or two clients and the test times 
out since it is waiting for all three receivers to get a copy.

> system_tests_one_router_failing on test_19_semantics_multicast
> --------------------------------------------------------------
>
>                 Key: DISPATCH-1431
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-1431
>             Project: Qpid Dispatch
>          Issue Type: Improvement
>          Components: Tests
>    Affects Versions: 1.9.0
>            Reporter: Ganesh Murthy
>            Assignee: Ken Giusti
>            Priority: Major
>             Fix For: 1.10.0
>
>
> Turn on valgrind and compile the router code.
> {noformat}
> make clean
> cmake .. -DUSE_VALGRIND=Yes -DVALGRIND_XML=Yes
> make install{noformat}
> Then run test_19_semantics_multicast
> {noformat}
> [gmurthy@localhost build]$ /usr/bin/python 
> "/home/gmurthy/opensource/qpid-dispatch/build/tests/run.py" "-m" "unittest" 
> "-v" "system_tests_one_router.OneRouterTest.test_19_semantics_multicast"
> test_19_semantics_multicast (system_tests_one_router.OneRouterTest) ... 
> FAIL======================================================================
> FAIL: test_19_semantics_multicast (system_tests_one_router.OneRouterTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/home/gmurthy/opensource/qpid-dispatch/tests/system_tests_one_router.py", 
> line 264, in test_19_semantics_multicast
>     self.assertEqual(None, test.error)
> AssertionError: None != u'Timeout Expired: sent=1 
> rcvd=0/1/0'----------------------------------------------------------------------
> Ran 1 test in 65.460sFAILED (failures=1)
> [gmurthy@localhost build]$ 
>  {noformat}



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