MRUNIT

1. Let CDH4 work with MRUNIT

<dependency>

<groupId>org.apache.mrunit</groupId>

<artifactId>mrunit</artifactId>

<version>0.9.0-incubating</version>

<classifier>hadoop2</classifier>

</dependency>

reference: https://blogs.apache.org/mrunit/entry/apache_mrunit_0_9_0#comment-1337534033000.