[MAPREDUCE-252] Create an InputFormat for reading lines of text as Java Strings

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Incomplete
• Assignee: Thomas White
• Reporter: Thomas White
• Created: 16/Jun/08 14:16
• Updated: 18/Jul/14 05:37
• Resolved: 18/Jul/14 05:37

Description

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

Issue Links

• is blocked by: HADOOP-3565 JavaSerialization can throw java.io.StreamCorruptedException
• is blocked by: HADOOP-1230 Replace parameters with context objects in Mapper, Reducer, Partitioner, InputFormat, and OutputFormat classes