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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-2285) TextInputFormat is slow compared to reading files.
Date Tue, 08 Jan 2008 20:26:34 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Douglas updated HADOOP-2285:
----------------------------------

    Status: Open  (was: Patch Available)

> TextInputFormat is slow compared to reading files.
> --------------------------------------------------
>
>                 Key: HADOOP-2285
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2285
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.15.0
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>             Fix For: 0.16.0
>
>         Attachments: fast-line.patch, fast-line2.patch, fast-line3.patch
>
>
> The LineRecordReader reads from the source byte by byte, which seems to be half as fast
as if the readLine method was defined on the memory buffer directly instead of as an InputStream.

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