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https://issues.apache.org/jira/browse/MAHOUT-1385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13982241#comment-13982241
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Sebastian Schelter commented on MAHOUT-1385:
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What's the status here? How can we get a feeling for the performance impact?
> Caching Encoders don't cache
> ----------------------------
>
> Key: MAHOUT-1385
> URL: https://issues.apache.org/jira/browse/MAHOUT-1385
> Project: Mahout
> Issue Type: Bug
> Affects Versions: 0.8
> Reporter: Johannes Schulte
> Priority: Minor
> Fix For: 1.0
>
> Attachments: MAHOUT-1385-test.patch, MAHOUT-1385.patch
>
>
> The Caching... line of encoders contains code of caching the hash code terms
> added to the vector. However, the method "hashForProbe" inside this classes
> is never called as the signature has String for the parameter original form
> (instead of byte[] like other encoders).
> Changing this to byte[] however would lose the java String internal caching
> of the Strings hash code , that is used as a key in the cache map, triggering
> another hash code calculation.
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