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From "Joseph Wu" <>
Subject Review Request 40849: [WIP] Fix flaky MemoryPressureMesosTests
Date Wed, 02 Dec 2015 00:58:28 GMT

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Review request for mesos, Bernd Mathiske, Artem Harutyunyan, and Till Toenshoff.

Bugs: MESOS-3586

Repository: mesos


The existing tests will check that "low" pressure events occur at least as often as "medium"
pressure events (this is the documented behavior).  However, the order of events and the order
in which we process said events is not guaranteed.  When we collect the pressure events via
a counter, there may be some events that are in-flight, and thereby not accounted for in the

This patch modifies MemoryPressureMesosTests to wait for memory pressure events to stop before
checking the counts for correctness.
The tests now stop the memory-pressure-triggering task and then wait for all events to be
processed before checking the counters.


  src/tests/containerizer/memory_pressure_tests.cpp e18b971c4df26c9b9c103ca73bdad4fd400d6c02



On Debian 8:
`make check`
`sudo bin/ --gtest_filter="*MemoryPressure*" --gtest_repeat=-1 --gtest_break_on_failure`

^ Ran the above for a couple minutes (it was previously failing ~1/5 times).

TODO: Need to run the test on other platforms it is known to be failing on.
i.e. Ubuntu 14, Centos 6, Centos 7, others?


Joseph Wu

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