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https://issues.apache.org/jira/browse/MESOS-5345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neil Conway reassigned MESOS-5345:
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Assignee: Neil Conway
> Design doc for TASK_LOST_IN_PROGRESS
> ------------------------------------
>
> Key: MESOS-5345
> URL: https://issues.apache.org/jira/browse/MESOS-5345
> Project: Mesos
> Issue Type: Task
> Components: master
> Reporter: Neil Conway
> Assignee: Neil Conway
> Labels: mesosphere
>
> The TASK_LOST task status describes two different situations: (a) the task
> was not launched because of an error (e.g., insufficient available
> resources), or (b) the master lost contact with a running task (e.g., due to
> a network partition); the master will kill the task when it can (e.g., when
> the network partition heals), but in the meantime the task may still be
> running.
> This has two problems:
> 1. Using the same task status for two fairly different situations is
> confusing.
> 2. In the partitioned-but-still-running case, frameworks have no easy way to
> determine when a task has truly terminated.
> To address these problems, we propose introducing a new task status,
> TASK_LOST_IN_PROGRESS. If a framework opts into this behavior using a new
> capability, TASK_LOST would mean "the task is definitely not running",
> whereas TASK_LOST_IN_PROGRESS would mean "the task may or may not be running
> (we've lost contact with the agent), but the master will try to shut it down
> when possible."
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