Nate McCall created CASSANDRA-14163:
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Summary: 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
Priority: Minor
{{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).
The {{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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