[jira] [Created] (MESOS-6743) Docker executor hangs forever if `docker stop` fails.

["Alexander Rukletsov (JIRA)" <ji...@apache.org>]

Alexander Rukletsov created MESOS-6743:
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             Summary: Docker executor hangs forever if `docker stop` fails.
                 Key: MESOS-6743
                 URL: https://issues.apache.org/jira/browse/MESOS-6743
             Project: Mesos
          Issue Type: Bug
          Components: docker
    Affects Versions: 1.0.1, 1.1.0
            Reporter: Alexander Rukletsov


If {{docker stop}} finishes with an error status, the executor should catch this and react instead of indefinitely waiting for {{reaped}} to return.

An interesting question is _how_ to react. Here are possible solutions.

1. Retry {{docker stop}}. In this case it is unclear how many times to retry and what to do if {{docker stop}} continues to fail.

2. Unmark task as {{killed}}. This will allow frameworks to retry the kill. However, in this case it is unclear what status updates we should send: {[TASK_KILLING}} for every kill retry? an extra update when we failed to kill a task? or set a specific reason in {{TASK_KILLING}}?

3. Clean up and exit. In this case we should make sure the task container is killed or notify the framework and the operator that the container may still be running.



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