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Date: Mon, 22 Aug 2011 19:22:29 +0000 (UTC)
From: "Thomas Jungblut (JIRA)" <jira@apache.org>
To: hama-dev@incubator.apache.org
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Subject: [jira] [Updated] (HAMA-423) Improve and Refactor Partitioning in
 the Examples
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     [ https://issues.apache.org/jira/browse/HAMA-423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Jungblut updated HAMA-423:
---------------------------------

    Attachment: HAMA-423-withoutCRs.patch

Made it with:

tr -d '\r' < HAMA-423-v1.patch > ../Desktop/HAMA-423-withoutCRs.patch


I'm so sorry, because I've coded it on windows.

The example executes faster than the one before, not just the partitioning. Seems to be a "good graph" :D

> Improve and Refactor Partitioning in the Examples
> -------------------------------------------------
>
>                 Key: HAMA-423
>                 URL: https://issues.apache.org/jira/browse/HAMA-423
>             Project: Hama
>          Issue Type: Improvement
>          Components: examples
>    Affects Versions: 0.3.0
>            Reporter: Thomas Jungblut
>            Assignee: Thomas Jungblut
>             Fix For: 0.4.0, 0.5.0
>
>         Attachments: HAMA-423-v1.patch, HAMA-423-withoutCRs.patch, sickimprovement.PNG
>
>
> Currently partitioning will write a key/value pair for each vertex/adjacent mapping.
> This results in heavy IO writes which actually bloats the file and let the partitioning take unnecessarily long.
> We should partition directly into the vertex classes and implement a vertex list/array writable which just writes a single key/value pair for a vertex/all-adjacents mapping.
> In fact we should make it generic, passing a vertex class which should implement the Writable interface.

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