Greg Mann created MESOS-8574:
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Summary: 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
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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