[jira] Updated: (MAHOUT-255) Open hash set and map that plug into java.util

["Benson Margulies (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAHOUT-255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benson Margulies updated MAHOUT-255:
------------------------------------

    Attachment: MAHOUT-255.patch

This also includes repairs to an embarassing oversight in all the Object-keys primitive maps.

> Open hash set and map that plug into java.util
> ----------------------------------------------
>
>                 Key: MAHOUT-255
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-255
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Math
>    Affects Versions: 0.3
>            Reporter: Benson Margulies
>            Assignee: Benson Margulies
>         Attachments: MAHOUT-255.patch
>
>
> Aside from the primitive type issues, the usual java.util.HashMap/Set classes suffer from horrible storage inefficiency.
> The Colt code can be adapted to add OpenHashSet<T> and OpenHashMap<K,V> that use open hashing and implement the full Collections interfaces.

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