Depending on how one defines its birth, Hadoop is now 10 years old. In that decade, Hadoop has gone from being the hopeful answer to Yahoo’s search-engine woes to a general-purpose computing platform that’s poised to be the foundation for the next generation of data-based applications.Alone, Hadoop is a software market that IDC predicts will be worth $813 million in 2016 (although that number is likely very low), but it’s also driving a big data market the research firm predicts will hit more than $23 billion by 2016. Since Cloudera launched in 2008, Hadoop has spawned dozens of startups and spurred hundreds of millions in venture capital investment