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From "T Jake Luciani (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-7128) Upgrade NBHM
Date Mon, 05 May 2014 20:21:15 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-7128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

T Jake Luciani updated CASSANDRA-7128:
--------------------------------------

    Description: Upgrade NBHM to use the Boundary maintained version  (was: 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.)

Pushed to https://github.com/tjake/cassandra/tree/7128

> Upgrade NBHM
> ------------
>
>                 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
>              Labels: performance
>             Fix For: 2.1 rc1
>
>
> Upgrade NBHM to use the Boundary maintained version



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