[jira] [Commented] (MESOS-8576) Improve discard handling of 'Docker::inspect()'

["Greg Mann (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-8576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16367916#comment-16367916 ] 

Greg Mann commented on MESOS-8576:
----------------------------------

Closing in favor of MESOS-8575.

> Improve discard handling of 'Docker::inspect()'
> -----------------------------------------------
>
>                 Key: MESOS-8576
>                 URL: https://issues.apache.org/jira/browse/MESOS-8576
>             Project: Mesos
>          Issue Type: Improvement
>          Components: containerization, docker
>    Affects Versions: 1.5.0
>            Reporter: Greg Mann
>            Assignee: Greg Mann
>            Priority: Major
>              Labels: mesosphere
>
> In the call path of {{Docker::inspect()}}, each continuation currently checks if {{promise->future().hasDiscard()}}, where the {{promise}} is associated with the output of the {{docker inspect}} call. However, if the call to {{docker inspect}} becomes hung indefinitely, then continuations are never invoked, and a subsequent discard of the returned {{Future}} will have no effect. We should add proper {{onDiscard}} handling to that {{Future}} so that appropriate cleanup is performed in such cases.



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