Michael Cherny created MESOS-7643:
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Summary: The order of isolators provided in '--isolation' flag is
not preserved and instead sorted alphabetically
Key: MESOS-7643
URL: https://issues.apache.org/jira/browse/MESOS-7643
Project: Mesos
Issue Type: Bug
Components: containerization
Reporter: Michael Cherny
According to documentation and comments in code the order of the entries in the
--isolation flag should specify the ordering of the isolators. Specifically, the
`create` and `prepare` calls for each isolator should run serially in the order
in which they appear in the --isolation flag, while the `cleanup` call should
be serialized in reverse order (with exception of filesystem isolator which is
always first).
But in fact, the isolators provided in '--isolation' flag are sorted
alphabetically.
That happens in [this line of
code|https://github.com/apache/mesos/blob/master/src/slave/containerizer/mesos/containerizer.cpp#L377].
In this line use of 'set<string>' is done (apparently instead of list or
vector) and set is a sorted container.
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