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May 11, 2014
MapReduce - MRUnit

MRUnit To Test MapReduce

This post explains how to unit test a MapReduce program using MRUnit. Apache MRUnit ™ is a Java library that helps developers unit test Apache Hadoop map […]
April 19, 2014
Million Song Dataset

Using Million Song Dataset In Hadoop

What is Million Song Dataset ?    The Million Song Dataset is a freely-available collection of audio features and metadata for a million   contemporary popular music tracks. The […]
April 4, 2014
Wikipedia Export

Input For Page Ranking Using Hadoop

If you are new to Hadoop, you are probably tired of WordCount and want to get hands on with some real use cases. Page ranking is an […]
March 3, 2014

Fixing org.apache.hadoop.security.AccessControlException: Permission denied

Executions in Hadoop use the underlying logged in username to figure out the permissions in the cluster. When running jobs or working with HDFS, the user […]