Author Archives: Allen Wittenauer

About Allen Wittenauer

Allen Wittenauer has been working with computers in one form or another since he was a teenager in high school. He's worked with a variety of technologies over his career including critical support of hospitals, laying the groundwork for Sun Microsystem's internal deployments for SSO and Kerberos, and operational architectures for many big data deployments. Release engineering, cloud infrastructures, and edge virtualization are currently his focus. He is a member of the Apache Software Foundation, where he is a PMC member of the Apache Yetus project and randomly contributes to various other projects.

Adding to Apache Hadoop’s Classpath

One of the big pain points of administrating Apache Hadoop is the ability to safely and efficiently add to the classpath. The original design in Hadoop gave users a single way to add jars: the HADOOP_CLASSPATH environment variable. This is a bit of a problem for end users, admins, and any 3rd party applications may… Read More »