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https://issues.apache.org/jira/browse/CALCITE-5433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17648556#comment-17648556
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Stamatis Zampetakis commented on CALCITE-5433:
----------------------------------------------

For those interested, a quick n dirty approach to install async-profiler on 
GitHub actions and get flamegraphs from Gradle tests can be found here:
https://github.com/zabetak/calcite/tree/async-prof-debug

In particular the changes can be summarized here:
https://github.com/zabetak/calcite/compare/332f7447bc3fa982fff4d7e416f61bccd9033501..542385c5d387e32b195ba76661b30723ff178d62

> Druid tests hang/fail intermittently in CI
> ------------------------------------------
>
>                 Key: CALCITE-5433
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5433
>             Project: Calcite
>          Issue Type: Bug
>    Affects Versions: 1.32.0
>            Reporter: Stamatis Zampetakis
>            Assignee: Stamatis Zampetakis
>            Priority: Major
>         Attachments: async-profiler-framegraphs.zip
>
>
> Some recent runs that were stuck: 
> https://github.com/apache/calcite/actions/runs/3680040091/jobs/6225181295
> https://github.com/apache/calcite/actions/runs/3674545796/jobs/6212895531
> https://github.com/apache/calcite/actions/runs/3663488988/jobs/6193301119
> This is not a new problem and has been discussed in the following thread:
> https://lists.apache.org/thread/z67j2pnlxx7zpmlvqlrozc9omkvbqffh



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