[jira] [Updated] (IMPALA-14069) Factor possibility of zero timestamps in aggregated event sequences

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

     [ https://issues.apache.org/jira/browse/IMPALA-14069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Surya Hebbar updated IMPALA-14069:
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    Summary: Factor possibility of zero timestamps in aggregated event sequences  (was: Factor possibility of 0ns timestamps in aggregated event sequences)

> Factor possibility of zero timestamps in aggregated event sequences
> -------------------------------------------------------------------
>
>                 Key: IMPALA-14069
>                 URL: https://issues.apache.org/jira/browse/IMPALA-14069
>             Project: IMPALA
>          Issue Type: Bug
>            Reporter: Surya Hebbar
>            Assignee: Surya Hebbar
>            Priority: Major
>
> Currently, the missing event timestamps are reported(i.e. unreported_event_instance_idxs) and then substituted by zeros within the JSON profile.
> Even with micro/nanosecond precision some event timestamps are still recorded as zeros (i.e. Prepare Finished - 0ns).
> These timestamps need to be distinguished from missing timestamps substituted with zeros(0).
> But, skipping missing values and loosing alignment between instance timestamps is not favorable for summary, representation or visualization.
> So, the aggregated event sequence timestamps should distinguish between both types of timestamps by value(i.e. other than existing unreported_event_instance_idxs)



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