[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:
-------------------------------
    Assignee:     (was: Neil Conway)

> 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
>              Labels: mesosphere
>         Attachments: duplicate_id_check_fail_test-1.patch
>
>
> The master crashes with a CHECK failure in the following scenario:
> # Framework launches task X on agent A1. The framework may or may not be partition-aware; let's assume it is not partition-aware.
> # A1 becomes partitioned from the master.
> # Framework launches task X on agent A2.
> # Master fails over.
> # Agents A1 and A2 both re-register with the master. Because the master has failed over, the task on A1 is _not_ terminated ("non-strict registry semantics").
> This results in two running tasks with the same ID, which causes a master {{CHECK}} failure among other badness:
> {noformat}
> master.hpp:2299] Check failed: !tasks.contains(task->task_id()) Duplicate task b88153a2-571a-41e7-9e9b-c297fef4f3cd of framework eaef1879-8cc9-412f-928d-86c9925a7abb-0000
> {noformat}



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