[jira] [Assigned] (AURORA-1289) Preclude co-scheduling of multiple tasks with the same static port

["zane silver (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AURORA-1289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

zane silver reassigned AURORA-1289:
-----------------------------------

    Assignee: Bill Farner

> Preclude co-scheduling of multiple tasks with the same static port
> ------------------------------------------------------------------
>
>                 Key: AURORA-1289
>                 URL: https://issues.apache.org/jira/browse/AURORA-1289
>             Project: Aurora
>          Issue Type: Story
>            Reporter: zane silver
>            Assignee: Bill Farner
>
> The current documentation states that, 
> "Static ports should be used cautiously as Aurora does nothing to prevent two tasks with the same static port allocations from being co-scheduled".
> http://aurora.apache.org/documentation/latest/configuration-reference/#announcer-objects
> Is there a benefit to being able to co-schedule two (or more) tasks with the same static port number to the same machine? It would seem that this is a bug. The proper functionality should treat static ports as a resource: once the port is acquired by a task, it will not be offered to any other task until the port resource is released. Therefore, no two tasks with the same port can be co-scheduled to the same machine. 
> The current implementation requires that clients using the Aurora scheduler have global knowledge of all static port allocations. This is clearly impossible for a large and scalable system.



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