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https://issues.apache.org/jira/browse/HIVE-21823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Vary updated HIVE-21823:
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    Attachment: HIVE-21823.2.patch

> New metrics to get the average queue length / free executor number for a 
> given time window
> ------------------------------------------------------------------------------------------
>
>                 Key: HIVE-21823
>                 URL: https://issues.apache.org/jira/browse/HIVE-21823
>             Project: Hive
>          Issue Type: Sub-task
>          Components: llap
>            Reporter: Peter Vary
>            Assignee: Peter Vary
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-21823.2.patch, HIVE-21823.patch
>
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> We need to calculate the average queue size / free executor size for a window 
> to have good data for making routing decisions.
> Interesting things to consider:
>  * The timeĀ gap between arriving request can be different, so simple average 
> is not enough to have correct data
>  * We need to have 2 parameters
>  ** Time window length
>  ** Maximum data point numbers - so we will not collect "infinite" amount of 
> data at high load



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