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From "Chuck Rolke (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PROTON-2033) qpid-proton changes 0.27.x to master(9ff0a) break qpid-dispatch self test
Date Mon, 15 Apr 2019 20:27:00 GMT
Chuck Rolke created PROTON-2033:
-----------------------------------

             Summary: qpid-proton changes 0.27.x to master(9ff0a) break qpid-dispatch self
test
                 Key: PROTON-2033
                 URL: https://issues.apache.org/jira/browse/PROTON-2033
             Project: Qpid Proton
          Issue Type: Bug
          Components: proton-c, python-binding
    Affects Versions: proton-c-0.28.0
         Environment: Fedora 29, python 3.7, proton and dispatch debug builds
            Reporter: Chuck Rolke


While cleaning up qpid-dispatch for a 1.6 follow-on release an intermittent failure in one
of the tests was exposed. Analysis of the failure is in https://issues.apache.org/jira/browse/DISPATCH-1322
in an attached text document https://issues.apache.org/jira/secure/attachment/12965891/DISPATCH-1322-analysis.txt

Another part of the cleanup was fixing the failing test to better report what went wrong.
See https://issues.apache.org/jira/browse/DISPATCH-1318

These issues happened using qpid-proton master @9ff0a. Temporarily the qpid-proton version
was reverted to branch 0.27.x @560ba. Using proton 0.27.x branch the qpid-dispatch self test
does not fail. It passed several thousand times in a loop. Moving proton back to the master
branch brought the dispatch failures back.

>From the qpid-dispatch perspective this issue is serious. If a receiver detaches a link
while a sender is sending to it then the sender may lose a disposition.

No attempt yet has been made to bisect proton to see where the different behavior starts showing
up. That may be the next best avenue of research.

Another theory for the error is that qpid-dispatch has been mishandling links all along.

To help expose the problem one may clone [https://github.com/ChugR/qpid-dispatch] , or add
it as a remote, and then check out branch DISPATCH-1318-cwip. Test system_tests_edge_router
has been gutted to run only test_12 in a loop and to print details of the error(s).

{{  cd build}}
{{  make}}
{{  ctest -VV -R edge}}

 

 



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