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From "Thomas Jungblut (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HAMA-740) DiskVerticesInfo are slow due to not buffered writes
Date Wed, 27 Feb 2013 19:49:12 GMT

     [ https://issues.apache.org/jira/browse/HAMA-740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thomas Jungblut updated HAMA-740:
---------------------------------

    Attachment: windows_patch.txt

windows patch, will generate a linux one that passes the testcases soon.
>From a first look, this is way faster (using the buffered LocalFS inputstreams.
                
> DiskVerticesInfo are slow due to not buffered writes
> ----------------------------------------------------
>
>                 Key: HAMA-740
>                 URL: https://issues.apache.org/jira/browse/HAMA-740
>             Project: Hama
>          Issue Type: Improvement
>            Reporter: Thomas Jungblut
>            Assignee: Thomas Jungblut
>         Attachments: windows_patch.txt
>
>
> Currently we write directly to the RandomAccessFile. This is ultra-slow as there is no
buffering between it.

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