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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 20:09:13 GMT

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

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

    Attachment: HAMA-740_1.patch

Patch within linux generated, passes testcases and is alot faster.

Sorry for the fail, I wasn't aware that the RandomAccessFile isn't buffered (if you think
about it, it actually makes sense there is no buffer in it). 

I like to commit this tomorrow with HAMA-737 if there are no objections on this one.
                
> 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: HAMA-740_1.patch, 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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