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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3566) Create an InputFormat for reading lines of text as Java Strings
Date Thu, 26 Jun 2008 12:01:45 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3566?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom White updated HADOOP-3566:
------------------------------

    Attachment: hadoop-3566-v2.patch

A new patch with Owen's suggestions. StringInputFormat is now a FileInputFormat<String,
Void>, so keys are the lines of text and values are nulls.

> Create an InputFormat for reading lines of text as Java Strings
> ---------------------------------------------------------------
>
>                 Key: HADOOP-3566
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3566
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Tom White
>            Assignee: Tom White
>         Attachments: hadoop-3566-v2.patch, hadoop-3566.patch
>
>
> Such a StringInputFormat would be like TextInputFormat but with input types of Long and
String, rather than LongWritable and Text. This would allow users to write MapReduce programs
that used only Java native types (i.e. no Writables).
> This is currently not possible to write without changes to Hadoop due to a limitation
in the RecordReader interface explained here: https://issues.apache.org/jira/browse/HADOOP-3413?focusedCommentId=12597935#action_12597935

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