[jira] [Updated] (IMPALA-13233) Represent phases of each instance seperately on the webUI's query timeline

["Surya Hebbar (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-13233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Surya Hebbar updated IMPALA-13233:
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    Summary: Represent phases of each instance seperately on the webUI's query timeline  (was: Represent phases of each instance seperately on the query timeline)

> Represent phases of each instance seperately on the webUI's query timeline
> --------------------------------------------------------------------------
>
>                 Key: IMPALA-13233
>                 URL: https://issues.apache.org/jira/browse/IMPALA-13233
>             Project: IMPALA
>          Issue Type: Improvement
>            Reporter: Surya Hebbar
>            Assignee: Surya Hebbar
>            Priority: Major
>
> Currently, in the query timeline, each instance's phases are represented together in a single bar with dividers to show when each phase has finished.
> This results in several problems as follows.
>  * If phases of multiple instances end at the same time, it is often hard or impossible to distinguish.
>  * Huge profiles with a large number of instances produce mostly black lines, which would not be desired by the user.
>  * In the case of multiple instances, each phase overlaps the next, hence blocking the user from realizing that other instances have started with the next phase.
>  * The correlation between representation and the actual values is less.
> So, it would be preferable to represent each instance's phases separately.



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