[jira] [Created] (MESOS-6786) Include reason in TASK_KILLED updates

["Gastón Kleiman (JIRA)" <ji...@apache.org>]

Gastón Kleiman created MESOS-6786:
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             Summary: Include reason in TASK_KILLED updates
                 Key: MESOS-6786
                 URL: https://issues.apache.org/jira/browse/MESOS-6786
             Project: Mesos
          Issue Type: Improvement
            Reporter: Gastón Kleiman


At least the following reasons can lead to a task being killed:

* The executor decided to kill it, e.g., if it was unhealthy.
* The framework requested the kill.
* An operator requested the kill.

The executors bundled with Mesos don't set a reason in the {{TaskStatus}} message, making it hard to debug task kills.

I think that we should extend the {{TaskStatus.Reason}} enum with reasons for those three cases.

In the case of health check failures, the executors should also populate the {{message}} field with useful debugging information.



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