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https://issues.apache.org/jira/browse/YUNIKORN-117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17114379#comment-17114379
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Weiwei Yang commented on YUNIKORN-117:
--------------------------------------

hi [~adam.antal]

Correct, currently, we are publishing all the events related to predicate 
failures to the event system, that's why you see this.

For the event system you are building, we will leverage that to publish more 
compact/meaningful events.

I know this is current WIP, but I am still wondering why the \{{Message}} is 
empty there? And also, we might want to keep the \{{Reason}} field tight.

> 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
>              Labels: pull-request-available
>
> 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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