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https://issues.apache.org/jira/browse/HADOOP-2906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Runping Qi updated HADOOP-2906:
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Status: Patch Available (was: Open)
The attached patch include a common abstract base class (MultipleOutputFormat)
and two concrete classes:
MultipleTextOutputFormat and MultipleSequenceFileOutputFormat. These classes
implement the default behaviors,
which are the same as TextOutputFormat class and SequenceFileOutputFormat
class, respectively.
The users can subclass these classes and overwrite one of the protected method
to implement a specific logic
of writing data to different output files.
The patch also contains a test case, which also illustrates two special ways of
using these classes.
> output format classes that can write to different files depending on keys
> and/or config variable
> -------------------------------------------------------------------------------------------------
>
> Key: HADOOP-2906
> URL: https://issues.apache.org/jira/browse/HADOOP-2906
> Project: Hadoop Core
> Issue Type: New Feature
> Components: mapred
> Reporter: Runping Qi
> Assignee: Runping Qi
> Attachments: patch.2096.txt
>
>
> I've a few apps that require to write out data into different
> files/directories depending on keys and/or configuration variables.
> I've implemented such classes for those apps. I noticed that many other users
> have similar need from time to time.
> So I think it may be a good idea to contribute to Hadoop mapred.lib package
> so that other users can benefit from it.
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