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https://issues.apache.org/jira/browse/CASSANDRA-4152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254006#comment-13254006
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Stu Hood commented on CASSANDRA-4152:
-------------------------------------
Since I'm sure someone else will ask: "What did the benchmark look like?"
> cache the hashcode of DecoratedKey as it is immutable
> -----------------------------------------------------
>
> Key: CASSANDRA-4152
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4152
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Dave Brosius
> Priority: Trivial
> Attachments: cache_decoratedkey_hash.diff
>
>
> cache the hashcode of the DecoratedKey on first hashCode() call. DecoratedKey
> is immutable so no need to run thru all ByteBuffer bytes of the key and do
> hashcode math.
> applied to trunk.
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