[Hadoop-common-dev] [jira] Created: (HADOOP-2906) output format classes that can write to different files depending on keys and/or config variable

output format classes that can write to different files depending on keys and/or config variable
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Key: HADOOP-2906
URL: https://issues.apache.org/jira/browse/HADOOP-2906
Project: Hadoop Core
Issue Type: New Feature
Reporter: Runping Qi



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.