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https://issues.apache.org/jira/browse/IMPALA-13233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on IMPALA-13233 started by Surya Hebbar.
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> Represent phases of each instance seperately on the query timeline
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>
> 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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