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https://issues.apache.org/jira/browse/HADOOP-3383?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Chansler updated HADOOP-3383:
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Component/s: dfs
> Redundant computation in hashCode() implemenation
> -------------------------------------------------
>
> Key: HADOOP-3383
> URL: https://issues.apache.org/jira/browse/HADOOP-3383
> Project: Hadoop Core
> Issue Type: Improvement
> Components: dfs
> Reporter: Tsz Wo (Nicholas), SZE
>
> In some hashCode() implementation (e.g. Block.hashCode()), the formula has
> the form
> {noformat}
> 37 * 17 + f(x),
> {noformat}
> where f( x ) is some function. Adding 37*17 to f( x ) shifts the value of f(
> x ). It is not effective to do shifting in hash functions. The computation
> is redundant.
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