Practice: Process logs with Apache Hadoop

http://www.ibm.com/developerworks/library/os-log-process-hadoop/

Analyzing Apache logs with Apache Pig

http://blog.cloudera.com/blog/2009/06/analyzing-apache-logs-with-pig/

http://blog.cloudera.com/blog/2011/11/using-hadoop-to-analyze-adverse-drug-events/

http://www.hpl.hp.com/techreports/