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From "Andrew Stitcher (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PROTON-1783) Sporadic hang in Windows CI test for C++ multithreaded_client_flow_control example
Date Mon, 05 Mar 2018 18:44:00 GMT

    [ https://issues.apache.org/jira/browse/PROTON-1783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16386519#comment-16386519
] 

Andrew Stitcher commented on PROTON-1783:
-----------------------------------------

This is a little hard to reproduce on a developer system. It seems that you need to have the
system under some load for it to happen.

This indicates it is some sort of race.

It was eventually reproduced using Debug builds by running the C++ example broker in one window
and then running
 {{start /b examples\cpp\Debug\multithreaded_client_flow_control.exe localhost examples 10
2}}
 multiple times in quick succession, after launching maybe 10 instances one of the processes
had hung, and could have a debugger attached.

({{start /b}} starts a process in the background without opening a new console window)

> Sporadic hang in Windows CI test for C++ multithreaded_client_flow_control example
> ----------------------------------------------------------------------------------
>
>                 Key: PROTON-1783
>                 URL: https://issues.apache.org/jira/browse/PROTON-1783
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: proton-c
>    Affects Versions: proton-c-0.21.0
>         Environment: Windows
>            Reporter: Andrew Stitcher
>            Assignee: Andrew Stitcher
>            Priority: Major
>
> There is a sporadic test failure in the Windows CI (Appveyor):
> It happens in the cpp-example-container test. The multithreaded_client_flow_control example
hangs and doesn't exit.
> This seems to only be an issue on Windows - the Linux/MacOS CI runs don't seem to hang
in this way.



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