T Jake Luciani created CASSANDRA-7128:
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Summary: Switch NBHS for CHS on read path
Key: CASSANDRA-7128
URL: https://issues.apache.org/jira/browse/CASSANDRA-7128
Project: Cassandra
Issue Type: Improvement
Reporter: T Jake Luciani
Assignee: T Jake Luciani
Priority: Trivial
Fix For: 2.1 beta2
Attachments: 7128.txt, Screen Shot 2014-04-30 at 11.07.22 PM.png
AbstractRowResolver uses a NBHM for each read request.
Profiler flagged this as a bottleneck since the init() call creates a
AtomicReferenceFieldUpdater which is stored in a synchronized collection.
A NBHS is most certainly overkill for such a short lived object. And turns out
switching it to a CHS in my tests yields a ~5-10% read boost.
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