[jira] [Commented] (YUNIKORN-839) getNodesUtilJSON is broken

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

    [ https://issues.apache.org/jira/browse/YUNIKORN-839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17411021#comment-17411021 ] 

Wilfred Spiegelenburg commented on YUNIKORN-839:
------------------------------------------------

The second problem I see with the current structure is that there is no real definition of the usage of the node is. A node can be in the bottom 10% for all resources while it is 99% full for one resource. Looking at the usage details based on the resource like this is not adding a lot of useful information.

Useful would be I think to display, as a percentage, the usage per resource for a node.

> getNodesUtilJSON is broken
> --------------------------
>
>                 Key: YUNIKORN-839
>                 URL: https://issues.apache.org/jira/browse/YUNIKORN-839
>             Project: Apache YuniKorn
>          Issue Type: Bug
>          Components: core - common
>    Affects Versions: 0.10
>            Reporter: Wilfred Spiegelenburg
>            Priority: Critical
>
> In {{getNodesUtilJSON()}} is only calculated for resources that are defined on a partition level. These might be the same resources as defined in the nodes or they might not be.
> When walking over the node the last node visited will ultimately set the {{resourceExists}} flag. If I have a set of 2 nodes one that has the resource GPU defined and one that has not the outcome of the call will be different for the order the nodes get visited.
> If the node with GPU is visited last the second loop will be entered with {{resourceExists}} true if it was checked first {{resourceExists}} will be false.
> That means the output of the call is unreliable, it also means that any web UI parts that display the details cannot be relied on.



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