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Posted to common-dev@hadoop.apache.org by "Alejandro Abdelnur (JIRA)" <ji...@apache.org> on 2008/07/18 13:26:32 UTC
[jira] Commented: (HADOOP-3566) Create an InputFormat for reading
lines of text as Java Strings
[ https://issues.apache.org/jira/browse/HADOOP-3566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12614697#action_12614697 ]
Alejandro Abdelnur commented on HADOOP-3566:
--------------------------------------------
On the {{StringInputFormat}} is now a {{FileInputFormat<String, Void>}}, shouldn't be more appropriate {{FileInputFormat<Void, String>}} ?
> 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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