About the Authors

Claudio Martella is passionate about graphs. He is a member of the Large-Scale Distributed Systems group at the VU University Amsterdam. His topics of interest are large-scale distributed systems, graph processing, and complex networks. He has been a contributor to Apache Giraph since its incubation; he is a committer and a member of the project’s Podling Project Management Committee (PPMC).

Dionysios Logothetis is a software engineer at Facebook. He is interested in building systems and tools for large-scale data management with a focus on graph mining. He has experience developing analysis systems built around Giraph and Hadoop. Dionysios holds a PhD in Computer Science from the University of California, San Diego, and also a degree in electrical and computer engineering from the National Technical University of Athens.

Roman Shaposhnik is a vice president and one of the lead developers of Apache Bigtop, a 100% open source and community-driven Big Data management distribution built on top of Apache Hadoop. He has been working on making Hadoop ecosystem components more accessible and easier to use, and he has contributed to a wide array of Apache projects, from Avro to ZooKeeper. In addition to his day job building Data Fabric APIs at Pivotal Inc., Roman currently serves as a vice president of Apache Incubator, helping exciting and new open source projects join the Apache family.