[jira] [Commented] (HIVE-17905) propagate background LLAP cluster changes to WM

["Prasanth Jayachandran (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-17905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16269849#comment-16269849 ] 

Prasanth Jayachandran commented on HIVE-17905:
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looks good to me, +1

Although the core change went in earlier, we can improve the latency of cluster change notification. 
Looks like we are polling for changes every 60s? This seems like a lot where for about a minute we have stale info. Is that right?
Any reason not to use registry notifications for changes to llap cluster size and then compute executor counts on every ZK notification?

> propagate background LLAP cluster changes to WM
> -----------------------------------------------
>
>                 Key: HIVE-17905
>                 URL: https://issues.apache.org/jira/browse/HIVE-17905
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-17905.patch
>
>
> HIVE-17841 already adds a method, it just needs to be called when there are relevant cluster changes that HS2 can detect



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