Reducer should not be abstract in order to serve as substitute for
IdentityReducer
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Key: MAPREDUCE-724
URL: https://issues.apache.org/jira/browse/MAPREDUCE-724
Project: Hadoop Map/Reduce
Issue Type: Bug
Affects Versions: 0.20.1
Reporter: Sean Owen
Priority: Minor
The old IdentityReducer class has been deprecated since the new Reducer class's
default behavior is the very same. The @deprecated tag indicates Reducer is a
substitute. However it is an abstract class and cannot be instantiated, which
causes problems. I imagine it is just a matter of removing the 'abstract'
keyword.
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