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https://issues.apache.org/jira/browse/MESOS-7742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16318567#comment-16318567
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Andrei Budnik commented on MESOS-7742:
--------------------------------------

How to reproduce Flavour 3:
Put a {{::sleep(1);}} before {{writer.close();}} in 
[Http::_attachContainerInput()|https://github.com/apache/mesos/blob/3290b401d20f2db2933294470ea8a2356a47c305/src/slave/http.cpp#L3222].

> ContentType/AgentAPIStreamingTest.AttachInputToNestedContainerSession is flaky
> ------------------------------------------------------------------------------
>
>                 Key: MESOS-7742
>                 URL: https://issues.apache.org/jira/browse/MESOS-7742
>             Project: Mesos
>          Issue Type: Bug
>            Reporter: Vinod Kone
>            Assignee: Andrei Budnik
>              Labels: flaky-test, mesosphere-oncall
>         Attachments: AgentAPITest.LaunchNestedContainerSession-badrun.txt, 
> LaunchNestedContainerSessionDisconnected-badrun.txt
>
>
> Observed this on ASF CI and internal Mesosphere CI. Affected tests:
> {noformat}
> AgentAPIStreamingTest.AttachInputToNestedContainerSession
> AgentAPITest.LaunchNestedContainerSession
> AgentAPITest.AttachContainerInputAuthorization/0
> AgentAPITest.LaunchNestedContainerSessionWithTTY/0
> AgentAPITest.LaunchNestedContainerSessionDisconnected/1
> {noformat}
> This issue comes at least in three different flavours. Take 
> {{AgentAPIStreamingTest.AttachInputToNestedContainerSession}} as an example.
> h5. Flavour 1
> {noformat}
> ../../src/tests/api_tests.cpp:6473
> Value of: (response).get().status
>   Actual: "503 Service Unavailable"
> Expected: http::OK().status
> Which is: "200 OK"
>     Body: ""
> {noformat}
> h5. Flavour 2
> {noformat}
> ../../src/tests/api_tests.cpp:6473
> Value of: (response).get().status
>   Actual: "500 Internal Server Error"
> Expected: http::OK().status
> Which is: "200 OK"
>     Body: "Disconnected"
> {noformat}
> h5. Flavour 3
> {noformat}
> /home/ubuntu/workspace/mesos/Mesos_CI-build/FLAG/CMake/label/mesos-ec2-ubuntu-16.04/mesos/src/tests/api_tests.cpp:6367
> Value of: (sessionResponse).get().status
>   Actual: "500 Internal Server Error"
> Expected: http::OK().status
> Which is: "200 OK"
>     Body: ""
> {noformat}



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