[jira] [Commented] (MESOS-3421) Support sharing of resources across task instances

["Yan Xu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-3421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15179152#comment-15179152 ] 

Yan Xu commented on MESOS-3421:
-------------------------------

[~adam-mesos] Hi Adam, mind if I take the shepherdship? We've made some changes to the initial design after a few rounds of discussions with [~jvanremoortere] and [~bmahler] and reached some consensus which we'll be sure to share with the community.

> Support sharing of resources across task instances
> --------------------------------------------------
>
>                 Key: MESOS-3421
>                 URL: https://issues.apache.org/jira/browse/MESOS-3421
>             Project: Mesos
>          Issue Type: Epic
>          Components: isolation, volumes
>    Affects Versions: 0.23.0
>            Reporter: Anindya Sinha
>            Assignee: Anindya Sinha
>              Labels: external-volumes, persistent-volumes
>
> A service that needs persistent volume needs to have access to the same persistent volume (RW) from multiple task(s) instances on the same agent node. Currently, a persistent volume once offered to the framework(s) can be scheduled to a task and until that tasks terminates, that persistent volume cannot be used by another task.
> Explore providing the capability of sharing persistent volumes across task instances scheduled on a single agent node.
> Based on discussion within the community, we would allow sharing of resources in general, and add support to enable shareability for persistent volumes.



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