[
https://issues.apache.org/jira/browse/IMPALA-12473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17770201#comment-17770201
]
Surya Hebbar commented on IMPALA-12473:
---------------------------------------
!q64_json_profile_missing_event_timestamp.png!
In this JSON profile, the event "First Batch Sent" (and its timestamp) is not
encountered in one of the child profile's event sequences, but it should have
been present. Hence in this example, at the end, there are 288 timestamps for
other events, but for the last event "Exec Internal Finished" event, only 287
timestamps can be collected.
To fix this issue, in this case comparing the labels each time would have a
performance overhead, we need to find a method to validate this without
overhead.
> Fix query profile's missing event timestamps exception in query timeline
> ------------------------------------------------------------------------
>
> Key: IMPALA-12473
> URL: https://issues.apache.org/jira/browse/IMPALA-12473
> Project: IMPALA
> Issue Type: Bug
> Reporter: Surya Hebbar
> Assignee: Surya Hebbar
> Priority: Minor
> Attachments: q4_json_profile_missing_event_timestamp.png,
> q64_json_profile_missing_event_timestamp.png
>
>
> The query profile contains different fragment's and there plan node's event
> timestamps.
>
> Sometimes the expected timestamps from an event are missing, this currently
> throws an exception, hence it stops the rendering of query timeline.
>
> The issue needs to be fixed with some validation of these timestamp event
> labels, without raising an exception.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
