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https://issues.apache.org/jira/browse/MESOS-8574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16361964#comment-16361964
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Greg Mann commented on MESOS-8574:
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Based on discussions offline today, we started to converge on the following
approach:
* Use {{.after()}} on the {{Future}} returned by {{docker->inspect()}} to
enforce a timeout, after which the Docker executor calls {{docker->stop}} in an
attempt to kill the container, if it's running.
* The executor registration timeout may be a logical choice for the duration of
this timeout.
* The {{docker->stop}} call should be performed via {{killTask()}} so that a
TASK_KILLING update is sent to the scheduler. This will allow the scheduler to
retry the {{docker stop}} call by sending KILL calls. In such a case, we should
discard any previously-made call to {{docker->stop}}.
> Docker executor makes no progress when 'docker inspect' hangs
> -------------------------------------------------------------
>
> Key: MESOS-8574
> URL: https://issues.apache.org/jira/browse/MESOS-8574
> Project: Mesos
> Issue Type: Improvement
> Components: docker, executor
> Affects Versions: 1.5.0
> Reporter: Greg Mann
> Priority: Major
> Labels: mesosphere
>
> In the Docker executor, many calls later in the executor's lifecycle are
> gated on an initial {{docker inspect}} call returning:
> https://github.com/apache/mesos/blob/bc6b61bca37752689cffa40a14c53ad89f24e8fc/src/docker/executor.cpp#L223
> If that first call to {{docker inspect}} never returns, the executor becomes
> stuck in a state where it makes no progress and cannot be killed.
> It's tempting for the executor to simply commit suicide after a timeout, but
> we must be careful of the case in which the executor's Docker container is
> actually running successfully, but the Docker daemon is unresponsive. In such
> a case, we do not want to send TASK_FAILED or TASK_KILLED if the task's
> container is running successfully.
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