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Posted to mapreduce-issues@hadoop.apache.org by "Ahmed Radwan (JIRA)" <ji...@apache.org> on 2011/01/11 02:01:04 UTC

[jira] Updated: (MAPREDUCE-2254) Allow setting of end-of-record delimiter for TextInputFormat

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ahmed Radwan updated MAPREDUCE-2254:
------------------------------------

    Attachment: 2.patch
                1.patch

1.patch applies on hadoop-mapreduce
2.patch applies on hadoop-common

> Allow setting of end-of-record delimiter for TextInputFormat
> ------------------------------------------------------------
>
>                 Key: MAPREDUCE-2254
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2254
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Ahmed Radwan
>         Attachments: 1.patch, 2.patch
>
>
> It will be useful to allow setting the end-of-record delimiter for TextInputFormat. The current implementation hardcodes '\n', '\r' or '\r\n' as the only possible record delimiters. This is a problem if users have impeded newlines in their data fields (which is pretty common). This is also a problem for other tools using this TextInputFormat (See for example: https://issues.apache.org/jira/browse/PIG-836 and https://issues.cloudera.org/browse/SQOOP-136).
> I have wrote a patch to address this issue. This patch allows users to specify any custom end-of-record delimiter using a new added configuration property. For backward compatibility, if this new configuration property is absent, then the same exact previous delimiters are used (i.e., '\n', '\r' or '\r\n').

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