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https://issues.apache.org/jira/browse/HADOOP-3566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12617781#action_12617781
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Tom White commented on HADOOP-3566:
-----------------------------------
bq. On the StringInputFormat is now a FileInputFormat<String, Void>, shouldn't
be more appropriate FileInputFormat<Void, String> ?
By making it <String, Void> you get the sort that Owen mentioned.
> 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
> Fix For: 0.19.0
>
> Attachments: hadoop-3566-v2.patch, hadoop-3566-v3.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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