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https://issues.apache.org/jira/browse/CASSANDRA-11517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joshua McKenzie updated CASSANDRA-11517:
----------------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: 3.x)
                   3.8
           Status: Resolved  (was: Ready to Commit)

[Committed to 
trunk|https://git-wip-us.apache.org/repos/asf?p=cassandra.git;a=commit;h=d9083a9c2946dfc9d82e9784369abc3387c445a7].
 Thanks!

> o.a.c.utils.UUIDGen could handle contention better
> --------------------------------------------------
>
>                 Key: CASSANDRA-11517
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11517
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Ariel Weisberg
>            Assignee: Ariel Weisberg
>            Priority: Minor
>             Fix For: 3.8
>
>
> I noticed this profiling a query handler implementation that uses UUIDGen to 
> get handles to track queries for logging purposes.
> Under contention threads are being unscheduled instead of spinning until the 
> lock is available. I would have expected intrinsic locks to be able to adapt 
> to this based on profiling information.
> Either way it's seems pretty straightforward to rewrite this to use a CAS 
> loop and test that it generally produces unique values.



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