[jira] [Updated] (MESOS-6785) CHECK failure on duplicate task IDs

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

     [ https://issues.apache.org/jira/browse/MESOS-6785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Neil Conway updated MESOS-6785:
-------------------------------
    Summary: CHECK failure on duplicate task IDs  (was: Prevent duplicate task IDs for partition-aware frameworks)

> CHECK failure on duplicate task IDs
> -----------------------------------
>
>                 Key: MESOS-6785
>                 URL: https://issues.apache.org/jira/browse/MESOS-6785
>             Project: Mesos
>          Issue Type: Bug
>          Components: master
>            Reporter: Neil Conway
>            Assignee: Neil Conway
>              Labels: mesosphere
>
> Duplicate task IDs might occur in two situations with partition-aware frameworks:
> # The agent is partitioned and task X on that agent is marked unreachable. The framework that proceeds to attempt to launch a new task with id X; the task launch should fail.
> # Same as above except that the master fails over before the task launch occurs. Because the master doesn't know that there is already a task id X on the partitioned agent, it cannot reasonably fail the task launch. Hence, when the agent re-registers, we probably need to kill the task with id X on the re-registering agent. This is unfortunate, but I'm not sure I see a feasible alternative.



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