[jira] [Commented] (YUNIKORN-117) Create event cache for queue and application events

["Adam Antal (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YUNIKORN-117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17106285#comment-17106285 ] 

Adam Antal commented on YUNIKORN-117:
-------------------------------------

Draft can be found [here|https://github.com/apache/incubator-yunikorn-core/pull/141].

> Create event cache for queue and application events
> ---------------------------------------------------
>
>                 Key: YUNIKORN-117
>                 URL: https://issues.apache.org/jira/browse/YUNIKORN-117
>             Project: Apache YuniKorn
>          Issue Type: Sub-task
>          Components: core - cache, core - scheduler
>            Reporter: Adam Antal
>            Assignee: Adam Antal
>            Priority: Critical
>
> Create a simple preliminary implementation of the event cache of YUNIKORN-42.
> We have the following limited scope for this task:
> - implement it as a separate process from the scheduler (similar to {{PartitionManager}})
> - only deal with queues and applications (the pods and nodes can be added later)
> - only store the apps last visited time from the scheduler
> - clean up those objects that haven't been visited in the last 24h
> Other cache implementations can be also considered.
> As a starting point, channels are a safe choice to have async communication with the scheduler without expecting bigger performance loss.



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