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Posted to issues@flink.apache.org by "CaoZhen (Jira)" <ji...@apache.org> on 2022/07/14 08:34:00 UTC

[jira] [Commented] (FLINK-13550) Support for CPU FlameGraphs in web UI

    [ https://issues.apache.org/jira/browse/FLINK-13550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17566711#comment-17566711 ] 

CaoZhen commented on FLINK-13550:
---------------------------------

hi [~jackylau], I am interesting the FLIP-213, how’s it going?

> Support for CPU FlameGraphs in web UI
> -------------------------------------
>
>                 Key: FLINK-13550
>                 URL: https://issues.apache.org/jira/browse/FLINK-13550
>             Project: Flink
>          Issue Type: New Feature
>          Components: Runtime / REST, Runtime / Web Frontend
>            Reporter: David Morávek
>            Assignee: Alexander Fedulov
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.13.0
>
>         Attachments: image-2021-11-23-13-36-03-269.png
>
>
> For a better insight into a running job, it would be useful to have ability to render a CPU flame graph for a particular job vertex.
> Flink already has a stack-trace sampling mechanism in-place, so it should be straightforward to implement.
> This should be done by implementing a new endpoint in REST API, which would sample the stack-trace the same way as current BackPressureTracker does, only with a different sampling rate and length of sampling.
> [Here|https://www.youtube.com/watch?v=GUNDehj9z9o] is a little demo of the feature.



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