[jira] [Commented] (MAPREDUCE-2208) Flexible CSV text parser InputFormat

["Marcelo Elias Del Valle (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13562696#comment-13562696 ] 

Marcelo Elias Del Valle commented on MAPREDUCE-2208:
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Created an improved version of a CSVInputFormat, able to read multiline CSVs, just in case it interests: https://github.com/mvallebr/CSVInputFormat
                
> Flexible CSV text parser InputFormat
> ------------------------------------
>
>                 Key: MAPREDUCE-2208
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2208
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>            Reporter: Lance Norskog
>            Priority: Trivial
>         Attachments: CSVTextInputFormat.java, TestCSVTextFormat.java
>
>
> CSVTextInputFormat is a configurable CSV parser tuned to most of the csv-style datasets I've found. The Hadoop samples I've seen all FileInputFormat and Mapper<LongWritable,Text>. They drop the Longwritable key and parse the Text value as a CSV line. But, they are all custom-coded for the format.
> CSVTextInputFormat takes any csv-encoded file and rearrange the fields into the format required by a Mapper. You can drop fields & rearrange them. There is also a random sampling option to make training/test runs easier.
> Attached are CSVTextInputFormat.java and a unit test for it. Both go into org.apache.hadoop.mapreduce.lib.input under src/java and test/mapred/src.
> This is compiled against hadoop-0.0.20.

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