Ellen Friedman is a solutions consultant and well-known speakerand author, currently writing mainly about big data topics. She is acommitter for the Apache Drill and Apache Mahout projects. With aPhD in Biochemistry, she has years of experience as a research scientistand has written about a variety of technical topics, includingmolecular biology, nontraditional inheritance, and oceanography.Ellen is also coauthor of a book of magic-themed cartoons, A Rabbit Under the Hat (The Edition House). Ellen is on Twitter as@Ellen_Friedman. Kostas Tzoumas is cofounder and CEO of data Artisans, the company founded by the original creators of Apache Flink. Kostas is PMC member of Apache Flink and earned a PhD in Computer Science from Aalborg University with postdoctoral experience at TU Berlin. He is author of a number of technical papers and blog articles on stream processing and other data science topics.
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