Yan Xu created MESOS-6422:
-----------------------------
Summary: cgroups_tests not correctly tearing down testing
hierarchies
Key: MESOS-6422
URL: https://issues.apache.org/jira/browse/MESOS-6422
Project: Mesos
Issue Type: Bug
Components: containerization
Reporter: Yan Xu
We currently do the following in
[CgroupsTest::TearDownTestCase()|https://github.com/apache/mesos/blob/5e850a362edbf494921fedff4037cf4b53088c10/src/tests/containerizer/cgroups_tests.cpp#L83]
{code:title=}
static void TearDownTestCase()
{
AWAIT_READY(cgroups::cleanup(TEST_CGROUPS_HIERARCHY));
}
{code}
One of its derived test {{CgroupsNoHierarchyTest}} treats
{TEST_CGROUPS_HIERARCHY} as a hierarchy so it's able to clean it up as a
hierarchy.
However another derived test {{CgroupsAnyHierarchyTest}} would create new
hierarchies (if none is available) using {{TEST_CGROUPS_HIERARCHY}} as a parent
directory (i.e., base hierarchy) and not as a hierarchy, so when it's time to
clean up, it fails:
{noformat:title=}
[ OK ] CgroupsAnyHierarchyTest.ROOT_CGROUPS_Subsystems (1 ms)
../../src/tests/containerizer/cgroups_tests.cpp:88: Failure
(cgroups::cleanup(TEST_CGROUPS_HIERARCHY)).failure(): Operation not permitted
{noformat}
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