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https://issues.apache.org/jira/browse/MAHOUT-260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12835056#action_12835056
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Sean Owen commented on MAHOUT-260:
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Great question -- it is only because there is no "WeakHashSet" in the JDK. I
need to store references to these wrapper objects in a way that won't prevent
them from begin GC'ed, and WeakHashMap is the best the JDK offers short of
rolling our own.
> An alternative approach to RNG management
> -----------------------------------------
>
> Key: MAHOUT-260
> URL: https://issues.apache.org/jira/browse/MAHOUT-260
> Project: Mahout
> Issue Type: Improvement
> Affects Versions: 0.3
> Reporter: Benson Margulies
> Assignee: Sean Owen
> Priority: Minor
> Attachments: MAHOUT-260.diff, MAHOUT-260_wrapper.patch
>
>
> Here's code to (a) use the JDK for random numbers when testing, and (b) make
> the RNG selectable.
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