[jira] [Created] (MESOS-6781) Mesos containerizer overrides environment variables passed to the executor incorrectly.

["Anand Mazumdar (JIRA)" <ji...@apache.org>]

Anand Mazumdar created MESOS-6781:
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             Summary: Mesos containerizer overrides environment variables passed to the executor incorrectly.
                 Key: MESOS-6781
                 URL: https://issues.apache.org/jira/browse/MESOS-6781
             Project: Mesos
          Issue Type: Bug
          Components: containerization
            Reporter: Anand Mazumdar
            Assignee: Jie Yu
            Priority: Blocker


Currently, the mesos containerizer appends the default environment variables of the executor and appends them _after_ any environment that were over-ridden by an isolator. This is problematic e.g., if the CNI isolator over-rides {{LIBPROCESS_IP}} in an overlay network. The containerizer would give the executor environment variables more preference meaning that the container would end up inheriting the IP address of the agent!

https://github.com/apache/mesos/blob/master/src/slave/containerizer/mesos/containerizer.cpp#L1412-L1421



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