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Date: Mon, 10 Dec 2012 13:35:22 +0000 (UTC)
From: "Edward J. Yoon (JIRA)" <jira@apache.org>
To: dev@hama.apache.org
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Subject: [jira] [Updated] (HAMA-531) Data re-partitioning in BSPJobClient
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     [ https://issues.apache.org/jira/browse/HAMA-531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Edward J. Yoon updated HAMA-531:
--------------------------------

    Fix Version/s: 0.6.1
    
> Data re-partitioning in BSPJobClient
> ------------------------------------
>
>                 Key: HAMA-531
>                 URL: https://issues.apache.org/jira/browse/HAMA-531
>             Project: Hama
>          Issue Type: Improvement
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>            Priority: Critical
>             Fix For: 0.6.1
>
>         Attachments: HAMA-531_1.patch, HAMA-531_2.patch, HAMA-531_final.patch, patch.txt, patch_v02.txt
>
>
> The re-partitioning the data is a very expensive operation. By the way, currently, we processes read/write operations sequentially using HDFS api in BSPJobClient from client-side. This causes potential too many open files error, contains HDFS overheads, and shows slow performance.
> We have to find another way to re-partitioning data.

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