[jira] [Updated] (MESOS-6805) Check unreachable task cache for task ID collisions on launch

["Artem Harutyunyan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MESOS-6805?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Artem Harutyunyan updated MESOS-6805:
-------------------------------------
    Sprint: Mesosphere Sprint 48, Mesosphere Sprint 49  (was: Mesosphere Sprint 48)

> Check unreachable task cache for task ID collisions on launch
> -------------------------------------------------------------
>
>                 Key: MESOS-6805
>                 URL: https://issues.apache.org/jira/browse/MESOS-6805
>             Project: Mesos
>          Issue Type: Bug
>          Components: master
>            Reporter: Neil Conway
>            Assignee: Neil Conway
>              Labels: mesosphere
>
> As discussed in MESOS-6785, it is possible to crash the master by launching a task that reuses the ID of an unreachable/partitioned task. A complete solution to this problem will be quite involved, but an incremental improvement is easy: when we see a task launch operation, reject the launch attempt if the task ID collides with an ID in the per-framework {{unreachableTasks}} cache. This doesn't catch all situations in which IDs are reused, but it is better than nothing.



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