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From "Tom White (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3607) Port missing new API mapreduce lib classes to 1.x
Date Thu, 29 Dec 2011 05:56:31 GMT
Port missing new API mapreduce lib classes to 1.x
-------------------------------------------------

                 Key: MAPREDUCE-3607
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3607
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: client
    Affects Versions: 1.0.0
            Reporter: Tom White
            Assignee: Tom White


There are a number of classes under mapreduce.lib that are not present in the 1.x series.
Including these would help users and downstream projects using the new MapReduce API migrate
to later versions of Hadoop in the future.

A few examples of where this would help:
* Sqoop uses mapreduce.lib.db.DBWritable and mapreduce.lib.input.CombineFileInputFormat (SQOOP-384).
* Mahout uses mapreduce.lib.output.MultipleOutputs (MAHOUT-822).
* HBase has a backport of mapreduce.lib.partition.InputSampler and TotalOrderPartitioner (in
org.apache.hadoop.hbase.mapreduce.hadoopbackport) - it would be better if it used the ones
in Hadoop.


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