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https://issues.apache.org/jira/browse/CASSANDRA-14163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Shuler updated CASSANDRA-14163:
---------------------------------------
    Fix Version/s:     (was: 3.11.2)
                   3.11.x

> RateBasedBackPressure unnecessarily invokes a lock on the Guava RateLimiter 
> ----------------------------------------------------------------------------
>
>                 Key: CASSANDRA-14163
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14163
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Nate McCall
>            Assignee: Nate McCall
>            Priority: Minor
>              Labels: lhf
>             Fix For: 4.0, 3.11.x
>
>         Attachments: 14163.patch
>
>
> {{o.a.c.net.RateBasedBackPressure#apply}} calls {{getRate()}} on the 
> underlying Guava {{RateLimiter}} several times in quick succession (including 
> as the argument to a non level checked log statement). 
> Said {{getRate()}} method acquires a lock within {{RateLimiter}}, so just 
> getting a local variable reference will remove several calls and thus several 
> lock acquisitions. 



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