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Posted to dev@mahout.apache.org by "Benson Margulies (JIRA)" <ji...@apache.org> on 2010/01/16 18:40:54 UTC

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

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


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

Posted by "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:
------------------------------------

    Status: Patch Available  (was: Open)

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

Posted by "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:
------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.3
           Status: Resolved  (was: Patch Available)

committed.

> 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
>             Fix For: 0.3
>
>         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.

-- 
This message is automatically generated by JIRA.
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You can reply to this email to add a comment to the issue online.


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

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

Posted by "Benson Margulies (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/MAHOUT-255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12801629#action_12801629 ] 

Benson Margulies commented on MAHOUT-255:
-----------------------------------------

I'm  going to commit this really soon to get the associated bug fixes to OpenObjectXXXHashMap<T>.

> 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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You can reply to this email to add a comment to the issue online.