[jira] [Resolved] (YUNIKORN-677) Potential resource leak when complete and allocate pod happens simultaneously

["Wilfred Spiegelenburg (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YUNIKORN-677?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wilfred Spiegelenburg resolved YUNIKORN-677.
--------------------------------------------
    Resolution: Fixed

> Potential resource leak when complete and allocate pod happens simultaneously
> -----------------------------------------------------------------------------
>
>                 Key: YUNIKORN-677
>                 URL: https://issues.apache.org/jira/browse/YUNIKORN-677
>             Project: Apache YuniKorn
>          Issue Type: Bug
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>            Priority: Blocker
>              Labels: pull-request-available
>             Fix For: 0.11
>
>
> Let's say we have an app that has 1 pod needs for scheduling. The shim submits an app to the core, and start the schedule the pod. In the shim side, this is a task in the Scheduling state. Then we have a race if the following things happen simultaneously:
> # User deletes the pod, this triggers a CompleteTask event in the shim side, and the shim will send a ReleaseAllocationAskRequest to the core.
> # Before handling the ReleaseAllocationAskRequest from the shim, the core made an allocation for the given pod and send an Allocation to the shim
> then the core generates an allocation on a node, core receives the release request and deletes the pending ask; the shim side receives the new allocation, but since the pod has already been deleted so the shim ignores this allocation. In this case, the allocation will be left-over causing the resource leak.



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