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Posted to issues@beam.apache.org by "Luke Cwik (Jira)" <ji...@apache.org> on 2022/04/07 16:08:00 UTC

[jira] [Commented] (BEAM-14144) Record JFR profiles when GC thrashing is detected

    [ https://issues.apache.org/jira/browse/BEAM-14144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17518987#comment-17518987 ] 

Luke Cwik commented on BEAM-14144:
----------------------------------

Note that OpenJDK 8u supports JFR. We already use the OpenJDK 8u as the base docker container for Apache Beam.

> Record JFR profiles when GC thrashing is detected
> -------------------------------------------------
>
>                 Key: BEAM-14144
>                 URL: https://issues.apache.org/jira/browse/BEAM-14144
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-dataflow
>            Reporter: Steve Niemitz
>            Assignee: Steve Niemitz
>            Priority: P2
>          Time Spent: 3h 20m
>  Remaining Estimate: 0h
>
> It'd be useful for debugging GC issues in jobs to have allocation profiles when it was occurring.   In java 9+, JFR is included in the JDK, we could use that to record profiles when GC thrashing is detected.



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