[jira] [Updated] (MESOS-5344) Revise TaskStatus semantics

["Neil Conway (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MESOS-5344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Neil Conway updated MESOS-5344:
-------------------------------
    Summary: Revise TaskStatus semantics  (was: New TASK_LOST Semantics)

> Revise TaskStatus semantics
> ---------------------------
>
>                 Key: MESOS-5344
>                 URL: https://issues.apache.org/jira/browse/MESOS-5344
>             Project: Mesos
>          Issue Type: Epic
>          Components: master
>            Reporter: 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_GONE, which would be used whenever a task can be guaranteed to not be running.



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