Allow Mapper and Reducer classes to be created a Spring Beans
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Key: HADOOP-3261
URL: https://issues.apache.org/jira/browse/HADOOP-3261
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Environment: All
Reporter: Dennis Kubes
Assignee: Dennis Kubes
This improvement abstracts the creation of Mappers and Reducers in factory
classes and adds the ability to define a spring beans.xml file in the classpath
and have the Mapper and Reducer classes be created as spring beans. This is
transparent to the rest of Hadoop but the benefit is that is allows Mapper and
Reducer classes to have their dependencies injected versus having them
hardcoded. This will help in the ability to test various mapreduce jobs.
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